5x-6029-Ventilador Manual Desenhos e Dados Tecnicos

Installation, Maintenance andOperations Manual for

COFIMCO G-GR Series Fans

G/GR - V2.1 - EN

February 11, 2010

AXIAL FANS FOR THE WORLD

It is recommended that this entire manual be read very intently beforeproceeding with installing the fan.

IMPORTANT: for installations of more than one fan, first, do completesetup of one single fan, and only after ensuring the perfect functioning ofthis fan (as described in manual), follow same mounting procedure with therest of fans.


ATTENTION: blades of COFIMCO G-GR Series Fans, are patented Cofimco trade-mark .The content of this manual cannot be copied, reproduced or printed without writtenauthorization from Cofimco S.r.l., and should a falsification occur, Cofimco S.r.l. willprotect itself using whatever means consented by law.

Copyright c 2010 - COFIMCO S.r.l., Pombia (NO), ITALYAll right reserved.

Manufacturers Declaration

Manufacturer:

COFIMCO S.r.l. via A.Gramsci 62, 28050 Pombia (NO) ITALIA

Declares that:each axial fan is manufactured in such a way to be built-in a machine or assembled

with other machineries for it to be constituted a machine in accordance with thenormative of 98/37/CEE;

Declares also that:it is not consented to run the fan until the fan, the equipment in which the fan mustbe built into, or of which must become a component part of, have been declared inaccordance with the normative of 98/37/CEE and with the national legislation in

force.


Table of Contents

Warranty iv

1 General Informations 1

2 Installation 42.1 Required tools for assembly . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 Fan rotation and flow direction . . . . . . . . . . . . . . . . . . . . . . . 52.3 Inclination of blade axis . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.4 Installation procedure for Cofimco fans with G-Series hub . . . . . . . . . 6

2.4.1 Standard hub placement to driving shaft . . . . . . . . . . . . . . 6

2.4.2 Hub with coupling flange placement to driving shaft . . . . . . . . 9

Disk installation to the coupling flange . . . . . . . . . . . . . . . 10

2.4.3 Blades installation and pitch angle setting . . . . . . . . . . . . . 11

3 Operating Instructions 14

3.1 Prior to start-up operations . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.2 Post start-up operations . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4 Preventive Measures for Maintenance 164.1 Maintenance and operations . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2 Temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.3 Possible causes of vibration . . . . . . . . . . . . . . . . . . . . . . . . . 17

A Hub Removal 20A.1 Standard Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20A.2 Hub with coupling flange . . . . . . . . . . . . . . . . . . . . . . . . . . 21

B Trouble Shootings 23

C Part List 25C.1 Standard hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25C.2 Hub with coupling flange . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Contacts 29

AXIAL FANS FOR THE WORLD COFIMCO G-GR Series Fans

List of Figures

1.1 Type of fan installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Identification tag format . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Tag example 9144/08/40F/G1.0 . . . . . . . . . . . . . . . . . . . . . . 2

2.1 Necessary tools for installing the blades . . . . . . . . . . . . . . . . . . . 4

2.2 Blade rotating clockwise . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Blade axes Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 G-Series hubs configurations . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.5 Standard hub configuration . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.6 Bolt [16] fastening order . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.7 Hub with cylindrical bore placement to driving shaft . . . . . . . . . . . . 8

2.8 Hub with bushing placement to driving shaft . . . . . . . . . . . . . . . . 8

2.9 Hub with coupling flange installation . . . . . . . . . . . . . . . . . . . . 9

2.10 Disk installation to coupling flange . . . . . . . . . . . . . . . . . . . . . 11

2.11 Blades installation to hub . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.12 Blade pitch-angle setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.13 Inclinometer placement . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.14 Bolts fastening order [6] . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1 Vibrations inspection positions . . . . . . . . . . . . . . . . . . . . . . . . 15

A.1 Hub removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

A.2 Hub removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

C.1 Standard hub parts exploded . . . . . . . . . . . . . . . . . . . . . . . . . 26

C.2 Hub with coupling flange parts exploded . . . . . . . . . . . . . . . . . . 28


List of Tables

2.1 Bolts [16] 8.8 Class or A4/70 torque . . . . . . . . . . . . . . . . . . . . 7

2.2 Bushing screw torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Bushing screw torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4 Screw torque bolts [16] 8.8 Class - A4/80 . . . . . . . . . . . . . . . . . . 10

2.5 Screw torque bolts [12] 8.8 Class - A4/70 . . . . . . . . . . . . . . . . . . 13

4.1 Temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

C.1 Part list standard hub (see Fig. C.1) . . . . . . . . . . . . . . . . . . . . 25

C.2 Part list hub with coupling flange (see Fig. C.2) . . . . . . . . . . . . . . 27


Warranty

COFIMCO S.r.l. guarantees that labour and all material used in the manufacturing offans are of the highest quality.

In case of mechanical breakage within the 1st year of its functioning or 18 monthsfrom when shipped out from our establishments, and our inspectors ascertaining thebreakage was caused from defective material and/or poor workmanship, the fan willbe repaired or immediately replaced with an identical or equivalent fan free of charge.Repairs or replacements will be F.O.T. from our establishments and will not includetransportation or extra labour costs.

If ascertained that some outside interference was caused to the fan or the breakage wasprovoked by an erroneous installation and/or manhandling, Cofimco S.r.l. will ceaseall warranty. Cost of repairs done without consent from Cofimco S.r.l. will not beaccepted.

Under no circumstances will Cofimco S.r.l. be responsible for consequential or inciden-tal damage, of any type, a result from manufacturing, selling, installing or use of itsproduct.


Chapter 1

General Informations

COFIMCO G-GR Series Fans Description

The stationary adjustable-pitch G-Series fan is a remarkable invention because of itssimplicity. Each hub is composed of two disks bolted to the central flange which isanchored to the hub of the driving shaft. Pillow blocks are inserted between the twosteel plates to enable to fix the blade shaft. Blades are made up of an airfoil sectionin aluminum alloy or fiberglass, fastened to a steel shaft or fiberglass through bolting.The root of blade shaft includes a retention pin and a regulator used to regulate fanradius.

Air Flow

(c) G type

Air Flow

(d) GR type

Figure 1.1: Type of fan installation

The COFIMCO G-GR Series Fans are available in two different configurations (seefigure 1.1 just as an example):

Type G: fans leaning on driving shafts. Type GR: fans suspended on driving shafts.


2Description fan identification numbers

All COFIMCO fans are equipped with a tag fixed on the hub to enable a clear and fastidentification.

The tag format is described on figure 1.2; an example of tag format is shown on figure1.3.

F/T Fan Type (the fan is identified by a serial number): XXXXX XX XXY XXY

Hub dimension

Hub Type

Blade Material: N: Aluminum L: Aluminum with flap F: FRP

Blade type

Number of blades

Fan Diameter (mm)

After the fan serial number there might be an extra letter, R and/or T, that represent the reverse installation layout and the special tip caps, respectively.

C/R COFIMCO reference number.

P.O. Purchase order number.

I Item number within the job.

A Blade pitch angle in degree.

Figure 1.2: Identification tag format

COFIMCO S.R.L. - ITALYVia A. Gramsci, 62 - 28050 POMBIA (NO)

F/T

C/R

P.O.

I

A

BLADE PAT. N 4618313HUB PAT. N 4715784

9144/08/40F/G1.0

12345/678

PO123456

E-1234

10.5

Figure 1.3: Tag example 9144/08/40F/G1.0

Tag shown in example (Fig. 1.3) refers to a fan with a diameter of 9144 mm, made upof 8 blades, each with a fiberglass profile type 40F, hub type G of 1 m in diameter.


3Reference Job number 12345/678, customers purchase order reference number PO123456,Item number within Job E1234 and blade pitch angle 10.5.

ATTTENTION: tag referred above is just an example and does not in any waycorrespond to any data referred to an identification tag of any purchased fan.

ATTENTION: data shown on identification tag must always be referred when order-ing spare parts.

Balancing

If not otherwise requested from the beginning, all Cofimco S.r.l. fans are balanced inthe following manner:

Dynamic fan balancing, with a balance degree of G = 6.3 according to ISO 1940/1,in the case the fan is shipped out already assembled.

For a fan dispatched disassembled, the hub and the blades are statically balancedso that the reassembled unit correspond to a balance degree of G = 6.3 accordingto ISO 1940/1. In this case, the blades have the same static moment, thereforethey can be placed in any order on the hub (the blades of the same item areinterchangeable).

Storage

As soon as a Cofimco fan is delivered it is very important to administer an accurateinspection in order to verify for possible damages due to transportation. In such cases,present a claim to the transportation company and mention on the claim the relativedocuments accompanied, such as, bill of lading, insurance certificates(if any), etc.

Also, as soon as fan is delivered, please insure that components are exactly what wasordered and delivered. In a case where goods are not in compliance with what ordered,contact Cofimco within 2 weeks of delivery.

If a fan is not immediately installed, we recommend that it be kept in a closed dry place,and not place any heavy material whatsoever on the blades. In the case of storage fora long period of time, before putting the product in action, please verify the conditionof protective layer of anti-corrosion on all surfaces performed on machines.


Chapter 2

Installation

This manual refers to COFIMCO G-GR Series Fans, installation conditions can varyin different situations.

2.1 Required tools for assembly

For assembling a fan, the following tools are required:

Dynamometric Spanner (torque wrench fig. 2.1(a)) required for fastening thebolts to a set screw torque.

Goniometric level (inclinometer fig. 2.1(b)) required for setting the blade pitchangle to the angle of design, following the procedure described in this chapter. Theaccuracy of the inclinometer must be at least 0.5 (max admissible tolerance).

(a) Torque wrench (b) Inclinometer

Figure 2.1: Necessary tools for installing the blades

Upon request COFIMCO S.r.l. has available for sale the necessary tools for installation.


2.2 Fan rotation and flow direction 5

2.2 Fan rotation and flow direction

The direction of fan rotation is correct when air flow moves from pressure side to suctionside. In the example seen in figure 2.2 rotation is clockwise, seeing the side that receivesair flow; upon request, Cofimco S.r.l. can supply fans with counterclockwise rotation.

Axis of Rotation

Clockwise rotation

Flow Direction

Blade Axis

Figure 2.2: Blade rotating clockwise

2.3 Inclination of blade axis

Cofimco fan blades may present, with respect to the plane perpendicular to the axis ofrotation, a small geometric angle, in the direction from where the air flow comes from(see Fig. 2.3).

Because of this angle, the centrifugal force generates a moment of flexure opposite tothat generated from traction, reducing stress which the blades can be subject of. It istherefore necessary, while installing, in the presence of this angle, that the blade axisbe turned toward where the air flow is coming from.

Air Flow

Rotational Plane

Centrifugal ForceAxis of Rotation

Trust Moment due toCentrifugal ForceBlade Axis Inclination

Moment dueto Trust

Figure 2.3: Blade axes Layout


2.4 Installation procedure for Cofimco fans with G-Series hub 6

2.4 Installation procedure for Cofimco fans with G-Series hub

After ensuring that all electrical contacts have been disconnected and that the motorcan not in any way be started inadvertently, one can proceed with the assemblingdescribed herewith.

Cofimco supplies two different hub types (see fig. 2.4); for standard hub follow theinstallation section 2.4.1, for hub with coupling flange follow the installation section2.4.2.

(a) Hub with coupling flange configuration (b) Standard hub configuration

Figure 2.4: G-Series hubs configurations

2.4.1 Standard hub placement to driving shaft

COFIMCO supplies the G-Series standard hubs already assembled (see fig. 2.5) withor without spacer [1B], respectively.

(a) Standard with spacer (b) Standard without spacer

Figure 2.5: Standard hub configuration

If it is necessary to fasten back the hub bolts [16], the screw torques for standards bolts



(8.8 class or A4/70) given on table 2.1 have to be used. The bolts have to be fastenfollowing a diagonal order (see example of figure 2.6 for a hub with ten bolts).

Bolt typeScrew torque

N m Lb ftM20 Cl.8.8 471.5 347.8M20 A4-70 221.7 163.5

Table 2.1: Bolts [16] 8.8 Class or A4/70 torque

ATTENTION: the bolts identification code is printed on bolts head and included inthe documentations part list.

Figure 2.6: Bolt [16] fastening order

COFIMCO supplies two different standard hub types:

1.A) Hub with cylindrical bore: in this case the hub is directly anchored to thedriving shaft, follow figure 2.7 for the installation procedure.

Coat the driving shaft with a thin layer of grease. If supplied, put the spacer [4A]in the driving shaft until it touches the driving shafts shoulder. Fit the assembledhub through the driving shaft until the flange touches the driving shafts shoulder(or the spacer if supplied). The driving shaft end, when the hub is in contact withits shoulder, should be at least 2 mm inside the hub bore (5 mm are suggested).This to avoid fans vertical displacements when the screw [3] is tightened. Put thenthe washer [2] on the flange bore and fasten the screw [3] to the driving shaft.

NOTE: the washer [2] and the screw [3] are not supplied by COFIMCO.




Figure 2.7: Hub with cylindrical bore placement to driving shaft

1.B) Hub with bushing: follows figure 2.8 for the installation procedure.


Figure 2.8: Hub with bushing placement to driving shaft

ATTENTION: in this case the driving shaft must not be coated withany grease.

Fit the bushing [4B] into the driving shaft until it reaches the desired location;the driving shaft end must not be inside the bushing. Install the hub flange tothe bushing making sure that the screw holes of the two items are aligned. Whenaligned, fasten the hub to the bushing with the screw torques defined on table2.2.

ATTENTION: do not start the fan with the bore screw (hub with cylindrical



Bushing TypeScrew Torque

N m Lb ftR1 e R2 39.3 29.0S1 e S2 94.9 70.0

U0, U1, U2 190.3 140W1, W2 339.4 250QD-N 407.1 300QD-P 610.2 450

Table 2.2: Bushing screw torque

bore) or the bushing screws (hub with bushing) fasten incorrectly.

2.4.2 Hub with coupling flange placement to driving shaft

COFIMCO supplies two flange types:

(a) Flange with cylindrical bore (b) Flange with bushing

Figure 2.9: Hub with coupling flange installation

1.A) Coupling flange with cylindrical bore: the hub is anchored directly to thedriving shaft, for the procedure refer to figure 2.9(a)

Coat the driving shaft with a thin layer of grease. If supplied, put the spacer [4A]in the driving shaft until it touches the driving shafts shoulder. Fit the assembledhub through the driving shaft until the flange touches the driving shafts shoulder(or the spacer if supplied). The driving shaft end, when the hub is in contact withits shoulder, should be at least 2 mm inside the hub bore (5 mm are suggested).This to avoid fans vertical displacements when the screw [3] is tightened. Thenput the washer [2] on the flange bore and fasten the screw [3] to the driving shaft.

NOTE: the washer [2] and the screw [3] are not supplied by COFIMCO.



1.B) Coupling flange with bushing: for the procedure refers to figure 2.9(b).

ATTENTION: in this case the driving shaft must not be coated withany grease.

Fit the bushing [4B] into the driving shaft until it reaches the desired location;the driving shaft end must not be inside the bushing. Install the hub flange tothe bushing making sure that the screw holes of the two items are aligned. Whenaligned, fasten the hub to the bushing with the screw torques defined on table2.3.

Bushing TypeScrew torque

N m Lb ftR1 e R2 39.3 29.0S1 e S2 94.9 70.0

U0, U1, U2 190.3 140W1, W2 339.4 250QD-N 407.1 300QD-P 610.2 450

Table 2.3: Bushing screw torque

ATTENTION: do not start the fan with the bore screw (hub with cylindricalbore) or the bushing screws (hub with bushing) fasten incorrectly.

Disk installation to the coupling flange

COFIMCO supplies the Hub G-Series already assembled (see figure 2.10(a)).

If it is necessary to fasten back the hub bolts [16], the screw torques for standardsbolts (8.8 class or A4/80) given on table 2.4 must be used. The bolts have to be fastenfollowing a diagonal order(see example of figure 2.10(b) for a hub with ten bolts).

Screw TypeScrew torque

N m Lb ftM30 Cl:8.8 1633.3 1204M30 A4/80 917.4 676.6

Table 2.4: Screw torque bolts [16] 8.8 Class - A4/80

ATTENTION: the bolts identification code is printed on bolts head and it is includedin the documentations part list.



(a) Disk with coupling flange (b) Screw tightening order(16)

Figure 2.10: Disk installation to coupling flange

2.4.3 Blades installation and pitch angle setting

1415

13

1312

5

85

96

7

10

6

(a) Exploded view (b) Assembled view

Figure 2.11: Blades installation to hub

NOTE: it is possible to have configurations with six or four screws [12] per pillow block.

For the blades installation procedure follow the instructions given here referring tofigure 2.11:

1. Remove a set of pillow blocks[6] and bolts[12] from the hub; rests the pillow blocksto blade shaft [8] paying attention that he retention pin [9] and the gap regulator[10] do not remain between the two pillow blocks.

2. Fit the blade shaft with the pillow blocks inside the hub being aware the bladeorientation is as indicated on figure 2.2.



3. Fasten the installed parts through the bolts [12] with a screw torque capable ofsustaining the blade but that allows both the blade rotation and blade horizontalmovements along blade main axis.

4. Place the gap regulator to the retention pin on its less-deep slot, pull than theblade until the gap regulator gets in contact with the pillow blocks.

Axis of Rotation

Clockwise Rotation

Flow Direction

Blade Axis

Inclinometer

90

5 mm

Figure 2.12: Blade pitch-angle setting

5. Place the inclinometer to the blade upper part at 5 mm from the blade ends andperpendicular to blade main axis as shown on figure 2.12 In case of a large profile(the inclinometer length is not enough), it is necessary to use a flat rod long enoughto reach the blade leading and trailing edges and than lean the inclinometer onit. See figure 2.13 for a correct placement.

Not right placement Right placement Right placement

Figure 2.13: Inclinometer placement

6. Rotate the blade until it reaches the requested pitch angle (A) written on fanidentification tag. The maximum admissible tolerance is 0.5.

7. Check if there is gap between the assembled part, in particular between the gapregulator [10] and the pillow block. Fasten the bolts [12] (using the torque wrench)following the fastening order as shown on figure 2.14 with the screws torque givenon table 2.5.

The bolts [12] are dependent to G-series hub and profile type used (this data is reportedon fan identification plate)



4 2

31

(a) Four bolts pillow blocks

5

164

3

2

(b) Six bolts pillow blocks

Figure 2.14: Bolts fastening order [6]

The screw torque depends on bolts classes, this is reported on bolts head. For standardbolt 8.8 Class or A4/70 use the torques given on table 2.5:

Bolt typeScrew torque

8.8 Class A4/70

N m Lb ft N m Lb ftM14 160.4 118.3 75.53 55.7M18 334.8 246.9 157.69 116.5M20 471.5 347.8 221.7 163.5

Table 2.5: Screw torque bolts [12] 8.8 Class - A4/70

Repeat the previous operations for each blade. Before starting the pitch angle settingoperation for a new blade, turn the fan until the new blade is located at the sameposition inside the fan ring as the previous ones. This to compensate any slight verticaldeviation from fan axis rotation.

ATTENTION: in case of a structure equipped with several fans, beforesetting blade design pitch angle to all fans , set the pitch angle on one fanonly, and follow the operating instructions of chapter 3.


Chapter 3

Operating Instructions

3.1 Prior to start-up operations

1. Before running the fan be aware that all the parts are well fasten and there isno gap between the blade shaft and the hub; if relative movements are detectedcheck the screw torques as described on chapter 2.

2. Rotate manually the fan for at least one complete turn paying attention that fandoes not enter in contact with the fan ring structure.

3. Rotate the fan manually to check if the gap between the blade tip and the fanring is in accordance with the design ratio x/D, where x is the distance betweenthe blade tip and the fan ring and D is the fan diameter. The gap has to bemeasured along the blade main axis.

If the distance between the blade tip and the fan ring is not that of design, the fandiameter could be modified fitting the retention pin [9] in another gap regulatorslot [10].

4. Check that blade axes agree with those defined on section 2.3.

5. Check gear box oil level and belt tension to be as indicated by the manufacturer.

6. Remove all tools from area.

7. Connect motor to power supply.

8. Start the fan for few second and then switch it off. While the fan is still turning,check that the direction of the blade rotation is correct as defined on section 2.2.

3.2 Post start-up operations

1. Check the power absorption, if excessive, reduce gradually the blade pitch angleuntil the desired power absorption is reached. If lower than expected, increase


3.2 Post start-up operations 15

gradually the blade pitch angle until the desired power absorption is reached.Update the new pitching angle on the fans of the same structure.

NOTE: a pitch angle trim of few degrees, respect to that of design, has to beconsidered normal.

ATTENTION: the power absorption varies inversely to air temperature.

2. Check that vibration level, as in the positions shown on figure 3.1, does not exceedthe most restrictive amplitude values between the limits imposed by the normativeof the structure where the fan is installed and the limit of 7 mm/s RMS (overall)measured in the frequency range 0 : 50Hz; above 50Hz and until a frequencyrange that include all the structure forcing frequencies, the limit decrease to 0.5mm/s RMS (overall). In the case one of the two limits is exceeded, shut the fandown and trace the cause of such an excessive vibration by referring to section4.3.

ATTENTION: the vibration-limit is valid for vibrations that occur along or-thogonal axis, hence vibration that remains constant along those axis (it is notvalid for rotational vibrations).

Figure 3.1: Vibrations inspection positions

3. After one working hour check the fan bolts [16] screw torque.

4. Repeat the screw torque of bolts [16] after 24 working hour from the start-up.


Chapter 4

Preventive Measures for Maintenance

4.1 Maintenance and operations

A Inspect periodically the overall fan conditions. Inspection interval depends on fanoperating conditions and may vary from a minimum of two weeks to a maximumof six months. During these inspections check the following:

screw torque; corrosion of fasteners; general condition of blades and shafts.

It may be necessary to clean the rotor blades to ensure the fan proper balancing.

B Ice formation on the blades of operating fans must be strictly avoided.

C The presence of ice on the blades of a still fan must be removed prior to start-up to avoid damages. Snow formed on a still fan must be periodically removed,according to the quantity of snow accumulated.

D For installations with two-speed motors, when stepping down from high speedto low speed, the motor must be turned off for a suitable duration so that thefan rotation speed has slowed below the low speed full RPM, before the motor isreengaged at the low speed setting.

E If the rotation direction has to be changed, stop the fan completely before changingthe direction.

F Check the vibration level in the positions shown in figure 3.1 at regular breaks.

G Check periodically the painted parts to seek for any damages due to corrosion. Inparticular, inside the Cooling Towers, the blade leading edge is subject to heavycorrosion; for the latter case it is recommended an inspection every six months.Restore any corrosion damages, in particular those on blade leading edge.


4.2 Temperature range 17

The vibration level, as in the positions shown on figure 3.1, does not exceed the mostrestrictive amplitude values between the limits imposed by the normative of the struc-ture where the fan is installed and the limit of 7 mm/s RMS (overall) measured inthe frequency range 0 : 50Hz; above 50Hz and until a frequency range that includeall the structure forcing frequencies, the limit decrease to 0.5 mm/s RMS (overall). Inthe case one of the two limits is exceeded, shut the fan down and trace the cause ofsuch an excessive vibration by referring to section 4.3. It is suggested to record thevibrations in order to compare it to the previous one. For a correct comparison themeasurements have to be done always in the same location and in the same manner.During vibration analysis observe the standard safety procedure, in particular do notget close to a running fan but place the transducers (accelerometer) with a still fan andmake the measurements from a safety location.

NOTE: the vibration level is a good indicator of the plant conditions. It is thereforeopportune to make these measurements frequently (e.g. once a month).

ATTENTION: the vibration-limit is valid for vibrations that occur along orthogonalaxis, hence vibration that remains constant along those axis (it is not valid for rotationalvibrations).

4.2 Temperature range

COFIMCO fans are designed to operate at the following temperatures:

- 20C (-4F) with standard materials Min - 56C (-69F) with special materials

Max

Aluminum blades: + 120C (+ 248F) Fan running + 165C (+ 329F) Fan at rest Frp blades: + 80C (+ 176F) Fan running + 120C (+ 248F) Fan at rest

Table 4.1: Temperature range

4.3 Possible causes of vibration

The actual causes of vibration may vary considerably, some of the most common arethe following:

A Unbalance of one or more blades: the vibration caused by blade imbalance occurson fan rotation plane with a frequency equal to the fan RPM and at an amplitudelinearly dependent to the degree of imbalance and the square of the rotationalspeed.


4.3 Possible causes of vibration 18

B Blade pitch angle not included in the 0.5 tolerance: this condition causes vi-bration outside the fan rotation plane at a frequency equal to the fan RPM andat an amplitude which is dependent on the square of the rotational speed.

C Blades too close to supports (periodic aerodynamic turbulence): this condition ischaracterized by vibration outside fan rotation plane at a frequency equal to theproduct of the number of fan blades and RPM. The amplitude depends upon theextent of the aerodynamic turbulence.

D Resonance between one of the possible forcing frequencies of the fan and one ormore of the vibration modes of the structure on which it is installed. The main forc-ing frequencies generated by the fan, normally correspond to the following frequen-cies:

fan RPM; product of fan RPM and the number of blades; product of fan RPM and the number of structural supports capable of gen-

erating aerodynamic turbulence (if they are arranged in an axial-geometricmanner).

E Vibration transmitted by the structure on which the fan is installed: the frequen-cies of such vibration depend on both the external forcing frequencies and theresonant frequencies of the structure.

F Resonance of the blades with one of the possible forcing frequencies: in the vastmajority of cases the vibration occurs outside of the blade rotation plane.

G Misalignment of the drive shaft: this generates vibration with a frequency that isone or two times the RPM. In most cases the vibration occurs outside the bladerotation plane.

H Loosening of blade and/or speed reducer fastening bolts: the fan behavior underthese circumstances is totally unpredictable, as it depends on the extent andlocation of the loosening.

I Output-shafts bearing that is worn out: this condition generates vibration on theblade rotation plane at a frequency equal to the rotor RPM.

J The fan and/or the structure bolts are not tightened: in this case all the boltshave to be tightened.

K The draining holes of the blades are obstructed: it is necessary to open them back.

L Incorrect hub installation: it is necessary to re-install the hub as described onsection 2.4.

M Incorrect blade installation: it is necessary to unscrew the bolts [16], pull theblades and tighten back the bolts at their proper screw torque.


4.3 Possible causes of vibration 19

ATTENTION: the amplitude of the fan vibration is determined by the stiffness ofits support. Vibration that would not be critical to a fan supported by a sufficientlyrigid structure is amplified by an overly flexible support. This support stiffness mayalso cause unexpected variations in the resonant frequencies of the blades.


Appendix A

Hub Removal

ATTENTION: before removing the hub be aware that the motor electrical sourcesare disconnected, therefore motor will not be able to start. On the basis of hub typeuse the next procedures.

A.1 Standard Hub

The fan hub may be extracted with or with out the blades installed. During removaloperation the fan has to be belted in order to avoid its fall after having removed theanchoring bolts. Remove the screw [3] in the case of hub with cylindrical bore or thebushing screws in the case of its presence.

The hub removal operation can be done using the the hub-G-Series extractor (seefig.A.1), not supplied with the fan. For this operations use the following procedurereferring to figure A.1.

1 Remove two opposite bolts [16] (see part list).

2 Place a disk [504], at least 5 mm thick and with a diameter slightly smaller thanhub slot, between the screw [503] and the driving shaft; this to avoid driving shaftdamages.

3 Fasten the extractor to the hub through the bolts [501] and [502] using the slotpreviously left free.

4 Tighten the screw [503] until the hub is removed.


A.2 Hub with coupling flange 21

(a) Extractor (b) Hub removal scheme

Figure A.1: Hub removal

After the hub removal the extractor has to be removed, and the bolts [16], previouslyremoved, fasten back at their proper screw torque. (see table 2.1).

A.2 Hub with coupling flange

The fan hub may be extracted with or with out the blades installed. During removaloperations the fan has to be belted in order to avoid its fall after having removed theanchoring bolts. Remove the screw [3] in the case of hub with cylindrical bore or thebushing screws in the case of its presence.

The hub removal operation can be done using the the hub-G-Series extractor (seefig.A.2), not supplied with the fan.

For this operation use the following procedure refer

1 Remove two opposite bolts [16] (see part list).

2 Place a disk [504], at least 5 mm thick and with a diameter slightly smaller thanhub slot, between the screw [503] and the driving shaft; this to avoid driving shaftdamages.

3 Fasten the extractor to the hub through the bolts [501] and [502] using the slotpreviously left free.

4 Tighten the screw [503] until the hub is removed.


A.2 Hub with coupling flange 22

(a) Extractor (b) Hub removal scheme

Figure A.2: Hub removal

After the hub removal the extractor has to be removed, and the bolts [16], previouslyremoved, fasten back at their proper screw torque. (see table 2.4).


Appendix B

Trouble Shootings

TROUBLE SHOOTINGS

Situation Possible Causes Possible Solutions System congestion. Clean the entire system

Check the real obstacles area and the inlet shape towards the original design.

Obstacles to the air flow. In dry-coolers the minimum free height of the inlet area has to be 1 time the fan diameter at least; this height has to be higher in the case of multiple units in line.

Static pressure higher than specified one .

Increase blade pitch angle (till 3 deg. after having checked the data sheet selection).

Blade pitch angle changed. (e. g. bolts [12] not tightened at the right torque).

Set the right pitch angle and refer to the operation manual to set the right torque of screws and bolts.

Low Air Flow Low Power Absorption

Temperature higher than that of design.

Increase blade pitch angle (till 3 deg. after having checked the data sheet selection).


24

Situation Possible Causes Possible Solutions

Temperature lower than that of design.

Decrease the blade pitch angle (till 3 deg. after have checked the data sheet selection). High power absorption

Static Pressure lower than that of design.

Decrease the blade pitch angle (till 3 deg. after have checked the data sheet selection).

Screws and bolts of the fan and/or the structure loosened. Torque all screws and bolts. Rubbing between the blades

and the fan ring Fan not centered. Tip clearance too small.

Center the fan. Increase the fan ring diameter.

Scratch or little damages Contact Cofimco. Thin crack on a blade surface Contact Cofimco.

Unbalance of one or more blades. Contact Cofimco.

Blade pitch angle not included in the 0.5 deg. tolerance. Set right blade pitch angle.

Blades too close to the supports (periodic aerodynamic turbulence).

Contact Cofimco.

Resonance between one of the possible fan forcing frequencies and one or more of the vibration modes of the structure on which it is installed.

Contact Cofimco.

Vibration transmitted by the structure on which the fan is installed.

Contact Cofimco.

Resonance of the blades with one of the possible forcing frequencies.

Contact Cofimco.

Misalignment of the drive shaft. Realign the drive shaft. Worn output shaft bearing Contact the supplier. The fan and/or the structure bolts are not tightened

Tighten screws and bolts at the right torque.

High vibration level

The draining holes of the blades are obstructed Open the draining holes.

In case of any problem contact COFIMCO S.r.l. specifying the order number indicatedon the fan identification plate.


Appendix C

Part List

On the basis of hub type the part list is given.

ATTENTION: the part list refers to a standard G-Series fan, for special applicationthe actual part list is that included with the fan documentation.

C.1 Standard hub

Part List Item Description Item Description 1A Hub boss 10 Gap ring regulator 1B Spacer (if supplied) 11 Shaft cap (if supplied) 2 Washer (not supplied by cofimco) 12 Screw 3 Screw (not supplied by cofimco) 13 Washer 4A Spacer (if supplied) 14 Lock washer 4B Bushing (if supplied) 15 Nut 5 Hub disk 16 Screw 6 Pillow block 17 Washer 7 Blade 18 Lock washer 8 Blade shaft 19 Nut 9 Retention pin

Cofimco G-GR series fan standard hub components

Table C.1: Part list standard hub (see Fig. C.1)


C.1 Standard hub 26

Figure C.1: Standard hub parts exploded


C.2 Hub with coupling flange 27

C.2 Hub with coupling flange

Part List Item Description Item Description 1A Hub boss 11 Shaft cap (if supplied) 1B Spacer (if supplied) 12 Screw 2 Washer (not supplied by cofimco) 13 Washer 3 Screw (not supplied by cofimco) 14 Lock washer 4A Spacer (if supplied) 15 Nut 4B Bushing (if supplied) 16 Screw 5 Hub disk 17 Washer 6 Pillow block 18 Lock washer 7 Blade 19 Nut 8 Blade shaft 20 Screw 9 Retention pin 21 Lock washer 10 Gap ring regulator 22 Washer

Cofimco G-GR series fan hub with coupling flange components

Table C.2: Part list hub with coupling flange (see Fig. C.2)


C.2 Hub with coupling flange 28

Figure C.2: Hub with coupling flange parts exploded


Contacts


COFIMCO S.r.l.Via A. Gramsci, 62

28050 Pombia (NO)Italy

Tel. +39 0321/968311Fax. +39 0321/958992

[email protected]://www.cofimco.com

6096/05/33F/G1.5T

CUSTOMERORDER NO.PROJECT/ITEMFAN MODEL

DATE12/06/13SCALE

- / -

DRAWING NO.

GA-36609-1-ENG

REV.

1

GENERAL ASSY DRAWING

COFIMCO REF. 36609/553mm [X]inches[]

THIS DRAWING IS PROPERTY OF COFIMCO SRL ANY RIGHT IS RESERVED ACCORDING TO THE LAW.

COFIMCO SRL - VIA GRAMSCI, 62 28050 POMBIA (NO) ITALY - PH. +39 0321968311 - FAX +39 0321958992 - [email protected] FANS FOR THE WORLD

GA-G-B10-1_H.emf

ESINDUS S.A.5x6029-07 rev.0

ARBRAT

0 5 10 15 20PITCH ANGLE

95 48 66

124

49 90

152

54 114

179 61 137

204 70 159

228 80 180

BT 59 62 68 76 86 96

25 PROFILE TYPEBLADE NO.

HUB TYPEINSTALLATIONWEIGHTINERTIA 2290 kgm2

kg638STANDARDG1.5

533F

DIAMETER 6096

SPECIAL TIP CAPSSECTION A-A

DESIGN

10.5

PITCH

ANGLE

CLOCKWISE ROTATIONFACING AIR FLOW

6096

ARBR

AIR FLOW DIRECTION

ATBT

BOLT M20X170 UNI 5737 TORQUE SETTING (Nm) 249

BOLT M20X170 UNI 5737 TORQUE SETTING (Nm) 249

SPACER RING TBD

1500

230

1702

20

290

172

1500

TBD

COFIMCO S.R.L. - VIA GRAMSCI, 62 - 28050 POMBIA (NO) - ITALY

TEL +39-0321-968311 FAX +39-0321-958992

COFIMCO Srl Via A. Gramsci, 62

28050 Pombia (NO) Italy

Dichiariamo, in riferimento alla applicazione della

Direttiva Macchine 2006/42/CE, che i ventilatori

industriali e gruppi di trasmissione

We declare, with reference to Machine Directive

2006/42/CE, that Industrial Fans and transmission

devices

Cliente

Customer ESINDUS, S.A.

Particolare: Fan model 6096/05/33F/G1.5T

Rif. Cofimco

Cofimco ref. 36609/553

Part No:

Ordine Cliente

Customer P.O. 5x6029-07 REV.0

Fornitura:

Supplied items:

Blades type BL/6096/33F/G1.5T

Hubs type HB/05/75/G1.5

in oggetto sono forniti non assemblati, e devono quindi

essere considerati come componenti separati e non

come assiemi.

Pertanto la Dichiarazione CE di conformit ai sensi della

2006/42/CE non applicabile n richiesta.

above mentioned, are supplied disassembled and must

therefore be considered as separate components and

not as assemblies.

Therefore, the EC declaration of conformity in

accordance with 2006/42/EC is not applicable neither

requested.

Pombia (NO), 12/06/2013

Ing. Nicola Romano

Engineering Manager

IOPRO002 Rev. 0 del 05-06-2007

Pag. 1 di 2

Organizzazione :

BLADE STATIC BALANCING - ENGLISH TRANSLATION FOR INFORMATION ONLY OFFICIAL VERSION IN ITALIAN

Rif. PGPRO001

Ref. Normative: ISO 1940. THE FAN BALANCING IS PERFORMED IN THE FOLLOWING WAYS : STATICAL : FANS WITH DIAMETER HIGHER THAN 1800 mm BLADES WITH LENGHT HIGHER THAN 800 mm DYNAMICAL : FANS WITH DIAMETER LOWER THAN 1800 mm BLADES WITH LENGHT LOWER THAN 800 mm FOREWORD : ON THE FIRST BLADE THAT IS PRODUCED, OR ON THE MASTER BLADE, A WEIGHT BETWEEN 200 AND 600 g IS ADDED, THIS TO BE SURE THAT THE BALANCING OF THE FOLLOWING BLADES WILL BE DONE BY WEIGHT ADDITION AND NEVER BY WEIGHT REMOVAL. STATIC BALANCING PERFORMED WITH ELECTRONIC BALANCING MACHINE:

1- INSTALL THE FIRST BLADE THAT IS PRODUCED, OR THE MASTER BLADE, ON THE BALANCING MACHINE 2- SET THE ZERO 3- READ THE PRODUCTION SPECIFICATION AND PUT ON THE BLADE END A CALIBRATED WEIGHT EQUAL (OR ROUNDED OF BY

DEFECT) TO THE MAXIMUM ADMITTED UNBALANCING 4- READ THE VALUE INDICATED BY THE BALANCING MACHINE (THIS IS THE MAXIMUM ADMITTED UNBALANCING) 5- REMOVE THE MASTER BLADE AND INSTALL THE BLADE TO BE BALANCED 6- ADD BALANCING WEIGHT TILL THE READ VALUE IS INCLUDED IN THE VALUE READ WITH MASTER BLADE AND SAMPLE WEIGHT

STATIC BALANCING PERFORMED WITH MECHANICAL BALANCING MACHINE:

1- INSTALL THE FIRST BLADE THAT IS PRODUCED OR THE MASTER BLADE ON THE BALANCING MACHINE 2- ADD WEIGHT USING THE TOOLS PRESCRIBED BY THE PRODUCION SPECIFICATION (ROD AND TRAY) TILL TO REACH THE BALANCE

POINT 3- SET THE ZERO 4- READ THE PRODUCTION SPECIFICATION AND PUT ON THE BLADE END A CALIBRATED WEIGHT EQUAL (OR ROUNDED OF BY

DEFECT) TO THE MAXIMUM ADMITTED UNBALANCING 5- READ THE VALUE INDICATED BY THE BALANCING MACHINE (THIS IS THE MAXIMUM ADMITTED UNBALANCING)

IOPRO002 Rev. 0 del 05-06-2007

Pag. 2 di 2

Organizzazione :

BLADE STATIC BALANCING - ENGLISH TRANSLATION FOR INFORMATION ONLY OFFICIAL VERSION IN ITALIAN

Rif. PGPRO001

6- REMOVE THE MASTER BLADE AND INSTALL THE BLADE TO BE BALANCED 7- ADD BALANCING WEIGHT TILL THE READ VALUE IS INCLUDED IN THE VALUE READ WITH MASTER BLADE AND SAMPLE WEIGHT

Storage requirements for customers

IOPRO019

Rev. 00

21/09/2010 Pag. 1 of 1

Rif.: PGPRO001

Written: G. Planca Approved: QA Date: 21/09/2010

STORAGE REQUIREMENTS

All the packings that contains fan components shall be stored preferably in indoor storage areas with

the following characteristics:

covered;

closed on all sides;

protected against flooding

free of vermin (rats, mice, insects, etc.);

with concrete or asphalt floor of adequate load-bearing capacity;

suitable for fork lift truck;

with appropriate accessways.

For short periods the packings can be stored on covered outdoor storage areas with the following

characteristics:

covered;

with good drainage

with surface having suffucient load-bearing capacity;

suitable for fork lift truck, truck, crane;

free of vegetation;

protected against flooding

with appropriate accessways.

The storage in areas without the above characteristics shall be avoided.

Handling procedure for painted parts

IOPRO022

Rev. 00

04/02/2011 Pag. 1 of 1

Rif.: PGPRO001

Written: UT Approved: QA Date: 04/02/2010

Handling procedure for painted parts

The following rules must be observed during handling, assembling and maintenance of

painted fans and components.

- Avoid to pile (stack) the hub disks on top of each other.

In case, put a protection element (wood, rubber, plastics, etc.).

- Avoid the contact of any metal tool, chain, hook, sling, etc. with the coated surfaces of

the fans components.

- Store or lean the hubs on non abrasive surfaces.

- Avoid to roll or slide the components during handling.

- Avoid to heat up the flange above 80 C.

- Avoid the direct contact between flames and coated surfaces.

- Avoid banging or hitting the coated with any object.

- Loosen all the pillow block bolts to allow an easy introduction of the blade shank

avoiding to scratch or damage the coated surfaces.

This procedure applies to the two adjacent pillow blocks too.

- If re-pitching is required, loosen all the pillow block bolts to allow an easy rotation of

the blade avoiding to scratch or damage the coated surfaces.

This procedure applies to the two adjacent pillow blocks too.

- In case the coated surface gets damaged, apply the coating repair procedure as soon as

possible.

Fan lifting procedure

IOPRO025

Rev. 00

10/07/2012 Pag. 1 of 1

Rif.: PGPRO001

Written: UT Approved: QA Date: 10/07/2012

Fan lifting procedure

The following rules must be observed during lifting:

- The handling of the unpacked material should be minimize to avoid coating damages.

- The use of any metal tool, chain and hook, directly in contact with any part of the fan

shall be avoided.

- The assembled fan shall be lifted up using at least three lifting points equally spaced.

- The fan must not be lifted up using the blade FRP shafts as lifting point.

- The lifting devices should be suitable for the fan weight/dimensions in object.

- The general/local lifting rules shall always be respected.

- The blades have to be lifted up with the profile in vertical position as per below sketch.

ITEM Q.TY DESCRIPTION MATERIAL PROTECTIVE TREAT.

3 2 HUB DISK STEEL S275 PAINT ISO 12944 C5-M

5

1 HUB BOSS STEEL C43/C45 PAINT ISO 12944 C5-M

6

7

10 HUB PILLOW BLOCK ALUMINUM NONE

8

9

10

11

12

13

14

15

HUB FIXING WASHER NOT SUPPLIED BY COFIMCO

16

17

20 5 BLADE ASSY GLASS-REINF. PLASTIC NONE + AISI L.E.P.

6 SCREW STAINL. STEEL AISI316 NONE

20 SCREW STAINL. STEEL AISI316 NONE

1

1

5 PIN STAINL. STEEL AISI316 NONE

20 NUT STAINL. STEEL AISI316

5 BLADE SHAFT STEEL 39NiCrMo3 PAINT ISO 12944 C5-M

20 SELF LOCKING WASHER STAINL. STEEL AISI316

6 NUT STAINL. STEEL AISI316

PLATE STAINL. STEEL AISI316 NONE

40 FLAT WASHER STAINL. STEEL AISI316 NONE

6 SELF LOCKING WASHER STAINL. STEEL AISI316 NONE

NONE

NONE

NONE

5 GAP RING REGULATOR AL ALLOY EN AW 6060 NONE

4

5x6029-07 rev.0

6096/05/33F/G1.5T

CUSTOMERORDER NO.PROJECT/ITEMFAN MODEL

ESINDUS S.A.DATE

12/06/13SCALE

- / -

DRAWING NO.

PL-36609-1-ENG

REV.

1

PART LIST

COFIMCO REF. 36609/553mm [X]inches []

THIS DRAWING IS PROPERTY OF COFIMCO SRL ANY RIGHT IS RESERVED ACCORDING TO THE LAW.


PL-G-B45-1_SW_W.emf

COFIMCO SRL - VIA GRAMSCI, 62 28050 POMBIA (NO) ITALY - PH. +39 0321968311 - FAX +39 0321958992 - [email protected]

25 SCREW NOT SUPPLIED BY COFIMCO

3

5

6

7

8

9

10

11

12

13

14

15

16

17

20

1 4

25

3

6 10

4

26

26

26 4 PIN NONE

1

6

TBD SPACER RING

STAINL. STEEL AISI304

PRODUCTION SCHEDULE

Customer: ESINDUS,S.A. Cofimco Job: 36609/553 Issue: AP.O.: 5x6029-07 REV.0 Fan model: N. 2 fans 6096-5-33F/G1.5T Date: 12/06/2013Project: EFACEC CCRL ANGOLA Prepared: G. PlancaDelivery date: WEEK 32/2013 DAP MADRID (E)

Week 2012/2013 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39ORDER PLACEMENTProduction drawingsOrders to suppliersSUPPLY Raw materialsblade profilehub flangesblade shaftshub diskesboltsMANUFACTUREhub flangespaintingshubs assembling/balancingblades assembling/balancingINSPECTIONinternal inspectionPACKINGSHIPPINGDOCUMENTATION

Notes: The a.m. scheduled manufacture activity progress, may be changed through new updated document issue.

Notes

In stockIn stock

Kanban

June July August September

Note: this document is property of Cofimco S.r.l. and shall not be reproduced, used or disclosed to third parties without owners written permission.

Axial flow fans for the word

PRO_COAT_016 C5-M New System

PRO_COAT_016 Eng

Rev. 04 01/09/2011

Page 1 of 4

Rev. Dtd Description Modified paragraphs

04 01/09/2011 Full revision upon International Paint technical support All

05 06/07/2012 Added alternative thinners, overcoating interval 2, 2.1

C5-M VERY HIGH CORROSIVITY ENVIRONMENT - HUB AND FLANGE PAINTING PROCEDURE NEW SYSTEM

Painting procedure for steel parts designed for very high corrosivity (Marine) environments classified by ISO12944-2 as C5-M.

TYPE: New Construction

SUBSTRATE: Steel

ENVIRONMENT: C5-M Marine/Offshore (High Durability) ISO12944-5

1 SURFACE PREPARATION

The performance of this product will depend upon the degree of surface preparation. The surface to be coated should be clean, dry

and free from contamination. Prior to paint application all surfaces should be assessed and treated in accordance with ISO 8504:2000

(Preparation of steel substrates before application of paints and related products. Surface preparation methods).

Sharp edges, fillets, corners and welds shall be assessed and treated in accordance with ISO 8501-3:2006 (Preparation grades of

welds, cut edges and other areas with surface imperfections).

Any oil and grease contamination shall be removed prior to blasting operations in accordance with SSPC-SP1 solvent cleaning.

Sandblasting: Abrasive blast clean to Sa2.5 (ISO 8501-1:2007) or SSPC-SP6. If oxidation has occurred between blasting and

application, the surface should be re-blasted to the specified visual standard.

Surface defects revealed by the blast cleaning process, should be ground, filled, or treated in the appropriate manner.

A sharp, angular surface profile of 50-75 microns (2-3 mils) is recommended.

After the sandblasting treatment, the piece will be carefully cleaned by air blowing, in order to remove all traces of abrasives and

dust.




PRO_COAT_016 Eng

Rev. 04 01/09/2011

Page 2 of 4

2 PAINT PREPARATION/APPLICATION

Application of the coat shall be carried out before any possible surface damage and/or contamination.

The paint will be applied using airless spray air spray gun; dry air is required for proper application.

Before and during painting

air temperature

steel temperature

relative humidity

dew-point within the painting area

shall be measured and under control. Records of measurements shall be maintained.

The paint will be applied in accordance with the paint manufacturers instructions (technical datasheet) and following table and

instructions:

Vol.

Film thickness

micron Recoating intervals guiding data

Sp

r.

rate

Coat Product name % Dry film Wet 10C 15C 25C

40C Thinner/Cleaner

sol. Min Spec Max Spec Min Max Min Max Min Max Min Max m2/l. GTA

1st Interzinc 52 59 50 70 140 120 6 h Ext 4 h Ext 3 h Ext 2 h Ext 7,9 220 822

2nd Intercure 99 80 160 200 300 250 2,5h ext 2,5h ext 1,5h ext 1,5h ext 4 GTA 713

(GTA 056) (GTA 733)

GTA 713 (GTA 056) (GTA 733)

Total DFT microns 270

NOTES

Only mentioned thinners or cleaners can be used.

INTERCURE 99 - Drying times quoted relate to 50% RH,. Increased humidity may result in faster drying time.

IT IS STRONGLY RECOMMENDED TO FOLLOW THE ISTRUCTIONS GIVEN ON IC99 WORKING PROCEDURE.




PRO_COAT_016 Eng

Rev. 04 01/09/2011

Page 3 of 4

2.1 APPLICATION DETAILS

Intercure 99 must NOT be applied directly over Interzinc 52 low temperature grade cure (EPA 176)

The following MEK test MUST be carried out before the application of Intercure 99 on Interzinc 52:

o Make 4 pass with a white cotton/rug wetted by MEK solvent on Interzinc 52.

the result MUST be grade 5 or 4 as per ASTM D 4752

THINNER (Intercure 99): partial thinning with International GTA713 (or GTA056 or GTA733) only, although this would not normally

be required. The use of alternative thinners, particularly those containing alcohols, can severely affect the curing mechanism and/or

workable pot life of the coating.

2.2 MEASUREMENT OF DRY FILM THICKNESS

Individual dry film thicknesses of less than 80% of the nominal dry film thickness are not acceptable.

Individual values between 80% and 100% of the nominal dry film thickness are acceptable provided that the overall average (mean)

is equal to or greater than the nominal dry film thickness.

Care shall be taken to achieve the nominal dry film thickness and to avoid areas of excessive thickness.

It is recommended that the maximum dry film thickness is not greater than 2 times the nominal film thickness.

3 CONTROL TESTING

3.1 SURFACE INSPECTION

After the coating process, the coating shall appear uniformly on all coated parts, free of defects, drips, burns, inclusions and porosities.

Test, inspection and final documentation shall be in compliance with this procedure and/or customer requirements.

3.2 THICKNESS CHECK

See point 2.2: thickness shall be checked on all the pieces.

3.3 ADHESION CHECK

Adhesion check will be performed at least on 1 piece per production batch or on a test panel prepared and coated at the same time

for each batch, using both following test methods.

X cut: test according to ASTM D3359, A method. Minimum required grade: 4A (ASTMD3359, 7.7) Pull off: test according to ISO4624. Minimum required adhesion value: 5MPa.




PRO_COAT_016 Eng

Rev. 04 01/09/2011

Page 4 of 4

4 PACKAGING - HANDLING

It is required an adequate and safe packaging of the painted components in order to avoid any possible damage to the surface.

Any defect on the painted surface is not admissible.

5 PAINTING REPAIR

It is admitted that some scratches on the surface can be repaired by manual application of the paint where it has been accidentally

removed. Repair shall be carried out according to PRO_COAT_035.

COFIMCO S. r . l . Via Gramsci, 62 - 28050 POMBIA (NO) - ITALY tel. +39-0321-968311 fax +39-0321-968399

Web site: http://www.cofimco.com E-mail: [email protected]

REPORT # PR BAL M10 01 01

TITLE:

PROCEDURE FOR THE DYNAMICAL BALANCING

OF THE SERIES G-GR HUBS

(TRANSLATION FROM ITALIAN FOR

INFORMATION ONLY)

DATE: 06/03/00

Copy #1

Revision 0 - Date: 18/01/2007

HUB DYNAMICAL BALANCING -

SERIES G-GR

1.0 PREPARATION OF THE BALANCING MACHINE 1.1 Use the dynamical balancing machine ZD 1000 (S/N 3696 ) or equivalent. 1.2 Clean the machine and the working area before to start to set the machine. All the materials that could obstacle the operator work must be removed from the working area. Check that the safety devices are fully operative. 1.3 Install the shaft suitable for the hub bore dimension. 1.4 Connect the transmission shaft. 1.5 Balance the shaft. 1.6 Install the hub to be balanced (upper and lower disk, pillow blocks and bolts duly assembled), lock it to the shaft. 1.7 Set the distance from the rotation axis where the balancing weight will be applied.

2.0 HUB BALANCING 2.1 Be sure that the safety device are set and that nobody is in the area near to the machine. 2.2 Start the machine. 2.3 Increase the speed till the design one.

2.4 The machine display shows, using a 1 to 100 angular scale, the point where the balancing weight has to be applied.

2.5 The machine display shows the value of the balancing weight to be applied. The weight has to be applied only if its value is higher that the maximum unbalance value. This is calculated using the following formula:

RNW

G hub10

where: Whub - hub weight [g] G - balancing degree [mms-1] N - design speed [rpm] R - distance of the unbalancing from the rotation axis

[mm]

2.6 The balancing weight has to be applied only if the value shown by the display is higher than the maximum unbalance value. The weight is applied in the position shown by the display. 2.7 Repeat the points from 2.3 to 2.6 till the unbalancing value shown by the display is lower than the maximum unbalance value (calculated in accordance to the point 2.5)

AXIAL FANS FOR THE WORLDCOFIMCO S.r.l. a Socio Unico

28050 Pombia (NO) - Via Gramsci, 62 - Tel. +39 0321968311 - Fax +39 0321958992

Recommended spare part list

Fan model 6096-5-33F/G1.5T

Fans quantity 2

Cofimco ref 36609/553

PO n 5x6029-07 REV.0

Recommended spare part list - Start up

description Ref. to PL-36609-

1-ENG

q.ty notes

pilow block bolt 9,10,11,12 4 4 bolts for each blade , reccomended

q.ty enough for one blade

Recommended spare part list - 2 years of operation

description Ref. to PL-36609-

1-ENG

q.ty notes

pilow block bolt 9,10,11,12 20 4 bolts for each blade , reccomended

q.ty enough for one complete fan

hub boss bolt 5,6,7,8 6 reccomended q.ty enough for one

complete fan

Prepared by Date

A. Crespi 12/06/2013

G-GR_EN_Manual.pdfTable of ContentsList of FiguresList of TablesWarrantyGeneral InformationsInstallationRequired tools for assemblyFan rotation and flow directionInclination of blade axisInstallation procedure for Cofimco fans with G-Series hubStandard hub placement to driving shaftHub with coupling flange placement to driving shaftDisk installation to the coupling flange

Blades installation and pitch angle setting

Operating InstructionsPrior to start-up operationsPost start-up operations

Preventive Measures for MaintenanceMaintenance and operationsTemperature rangePossible causes of vibration

Hub RemovalStandard HubHub with coupling flange

Trouble ShootingsPart ListStandard hubHub with coupling flange

Contacts

GA-36609-1.pdfdeclaration CE ESINDUS 36609.pdfIOPRO002 rev.0 Controlli di Bilanciatura Statica - GB.pdfIOPRO019 ENG - Storage procedure - Rev.00.pdfIOPRO022 ENG - Handling procedure for painted parts - Rev 00.pdfIOPRO025 ENG - Fan lifting procedure - Rev.pdfPL-36609-1.pdfPlaneamento_prod_ventilador_36609.pdfPRO_COAT_016 Eng - C5M New System Rev. 05.pdfPROCEDURA BILANCIATURA DINAMICA MOZZI G - ENG.pdfrecommended spare parts 36609.pdf

Documents

5x-6029-Ventilador Manual Desenhos e Dados Tecnicos