Canarm XB User manual

M0112

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

WALL EXHAUST FANS BELT & DIRECT DRIVE

XB, HV, HVA, ADD, DDS, DDP

The purpose of this manual is to aid in the proper installation and operation of the

fans. These instructions are intended to supplement good general practices and are not

intended to cover detailed instruction procedures. It is the responsibility of the

purchaser to assure that the installation and maintenance of this equipment is handled

by qualified personnel.

Inspect all shipments carefully for damage. THE RECEIVER MUST NOTE

ANY DAMAGE ON THE CARRIER’S BILL OF LADING AND FILE A CLAIM

IMMEDIATELY WITH THE FREIGHT COMPANY.

INSTALLATION

1. Cut and frame the appropriate wall opening. Fans mounted to a wall require a

different wall opening than fans mounted in cabinets or sleeves. For specific

dimensions, refer to the submittal drawing for the specific fan configuration.

2. Mount the fan in the opening with the fan panel directly over the load bearing

support and if this is not practical angle supports must be provided to transfer

the fan weight to the load bearing structure.

3. Caution: The fan contains rotating parts and requires electrical service.

Appropriate safety precautions should be taken during installation, operation

and maintenance.

4. Warning: Do not install or operate this fan in an environment where

combustible materials, gasses or fumes are present unless it was specifically

designed and manufactured for that application.

5. A damper, if used, should be securely mounted in a manner that allows free and

unobstructed operation.

6. All electrical work must be done, in accordance with all applicable electrical

codes, by a qualified electrician.

7. Prior to wiring ensure the power supply is locked in the OFF position and that

the motor nameplate voltage and the supply voltage match.

M0112

8. Be sure to keep all wiring clear of any rotating parts.

9. Before starting the fan ensure that the wheel rotates freely.

10. Tighten all nuts; bolts and setscrews prior to fan start up.

11. On belt driven fans make sure that the belts are tensioned and aligned correctly.

12. Ensure that all protective guards and other safety devices are installed properly

prior to fan start up.

Wiring Instructions

A qualified electrician in accordance with all local and National Electrical Codes

should do all wiring. Lock off all power sources before any wiring is to be

performed. Leave enough slack in the wiring to allow for motor movement when

adjusting the belt tension. Excess wire must be restrained in order to prevent it from

entering the shaft and propeller area. Disconnect switches are recommended and should

be located near the fan in order to, swiftly cut off power in case of an emergency and

maintain complete control of the power source. Some motors may have to be removed

in order to make the connections in the motor terminal box. Follow the wiring diagrams

on the motor nameplate.

1. Wall Fans

•Extend the proper gauge wire to the fan motor.

•Restrain excess wire from entering the shaft and propeller area

2. Wall Fans with Cabinets

•Remove guard from cabinet.

•Drill a hole through the cabinet at a convenient location and pull the

wires through (never wire through the guard).

•Restrain excess wire from entering the shaft and propeller area

OPERATION

Pre Start Inspection

•Lock out all power sources

•Inspect all fasteners and set screws and tighten as required

•Inspect belt alignment and tension

•Confirm power source voltage and motor voltage are the same and

that the motor is wired correctly

•Rotate the fan blade to ensure that neither the fan blade nor the belts

come into contact with the housing

•Inspect the fan and the ductwork to ensure they are free of debris

•Check to ensure that all guards and accessories are securely mounted

•Check to be sure the propeller rotation is correct

M0112

Typical Installation

Refer to page 8

Start Up

Turn the fan on and inspect for the following.

•Direction of rotation

•Improper motor amperage

•Excessive Vibration

•Unusual Noise

•Improper belt tension or alignment

If a problem is discovered shut off the fan and refer to the section on

troubleshooting to discover the cause of the problem. The fan should be inspected after

30 minutes, 8 hours and 24 hours of operation to ensure all fasteners are tight and belts

are properly tensioned and aligned.

MAINTENANCE

WARNING

Disconnect and secure to the OFF position all electrical power to the fan prior to

inspection or servicing. Failure to comply with this safety precaution could result in

serious injury or death.

•Ventilators should be checked at least once a year. For critical or severe

applications a routine check every two to three months is suggested.

•When removing or installing a belt don’t force the belt over the sheave. Loosen

the motor mount so that the belt can be easily slipped over the sheave.

•The belt, on belt driven units, should be removed and carefully checked for

cracks, ply separation or irregular wear. A small irregularity in the contact

surface of the belt will result in noisy operation. If any of these defects are

apparent the belt should be replaced. At the same time check the sheaves for

chips, dents or rough surfaces that could damage the belt.

•The correct belt tension is important. Too tight a belt will result in excess

bearing pressure, which can cause premature bearing failure and may cause the

motor to overload, too loose a belt will result in slippage, which will burn out

belts. Proper belt deflection should be 1/64” (half way between sheave centers)

for each inch of belt span when a force of approximately 5 lbs. is applied.

•The belt alignment should be checked to be sure that the belt is running

perpendicular to the rotating shafts. Motor and drive shafts must be parallel.

•A periodic inspection of all fasteners should be carried out to ensure they have

not loosened due to vibration. Particular attention should be paid to fasteners

attaching the wheel to the shaft and those attaching the shaft to the bearing.

M0112

•The standard pillow blocks on belt driven fans are factory lubricated. These

bearings should be lubricated on a semi annual basis (more frequently in severe

applications) using a high quality lithium based grease. With the unit running

add grease very slowly, using a manual grease gun, until a slight bead of grease

forms at the seal. Be careful not to unseat the seal by over lubricating or by

using excessive pressure. When the bearings are obstructed from view use no

more than three injections with a hand operated grease gun

•Dust and dirt on the exterior surface of the motor, fan panel and the entire fan

wheel should be removed, at intervals determined by the severity of the

application, to ensure proper service life and safety.

•For additional safety information refer to AMCA publication 410-96,Safety

Practices for Users and Installers of Industrial and Commercial Fans

Belt Tension

Belt and Pulley Replacement

In the course of regular maintenance the belts and pulleys may have to be

changed and or adjusted the recommended procedure is as follows.

•Do not change the pulley pitch diameter in order to tension the belts.

This will result in a change in the fan speed.

•Loosen the nuts on the motor plate or motor in order to reduce the belt

tension such that the belts will easily slip over the pulleys. Never force

the belts over the rim of the pulley.

•Loosen the setscrews on the pulleys and remove from either the motor or

fan shaft using a two or three jaw puller.

•Remove any shaft imperfection such as setscrew mark using a file or

emery cloth.

•Install the replacement pulleys tightening all setscrews to the

recommended torque rating (see chart) and ensuring that they are

properly aligned.

•Pulley alignment is achieved by moving the pulleys on their respective

shafts or moving the entire motor until the pulleys are correctly aligned

(see figure). Using a square with one edge parallel to the motor shaft

adjust the pulleys until the other edge is parallel to the belts.

•Slip the belts over the pulleys then adjust the motor/ motor plate until

the proper tension is reached (1/64” deflection, half way between pulley

centers, per inch of belt span when pressed firmly).

•Tighten the motor plate/ motor adjusting nuts in place.

M0112

Pulley Alignment

INCORRECTINCORRECT

INCORRECTCORRECT

Recommended Torque for Setscrews/Bolts (inch/lbs)

Bearings Replacement

Canarm/LFI Ltd. uses pillow block bearings.

•Before removing the bearings mark the positions of the fan blade,

bearings and pulley on the shaft.

•Note the clearance between the fan blade and the venturi.

•Remove the pulley and fan blade from the shaft using a puller.

•Unbolt the bearings and remove the shaft and pillow blocks as one unit.

•Clean the shaft and remove any marks using a file or emery cloth then

remove the bearings using a bearing puller.

•Inspect the shaft and replace if necessary.

•Mount the new bearings on a section of the shaft that is not worn by

tapping the inner ring face using a soft mallet.

•Align the setscrews on the bearings and then tighten one setscrew on

each bearing.

•Loosely install the bearings on the bearing mount.

•Rotate the shaft to find the center of free movement.

•Install the propeller adjusting the bearing location to center the blade in

the venturi.

SETSCREWS

RECOMMENDED

TORQUE INCH-LBS

HOLD DOWN BOLTS

SIZE

HEX

KEY

MIN

MAX

SIZE

TORQUE

INCH-LBS

NO.10

3/32”

3/8”-16

240

1/4"

1/8”

1/2"-13

600

5/16”

5/32”

126

156

5/8”-11

1200

3/8” 3/8”

3/16”

228

275

3/4 “-10

2100

7/16”

7/32”

348

384

7/8”-9

2040

1/2"

1/4"

504

600

1”-8

3000

5/8”

5/16”

1104

1200

1-1/8”-7

4200

3/4"

3/8”

1440

1800

1-1/4”-7

6000

M0112

•Tighten the bearing bolts to the proper torque rating (see chart)

•Turn the propeller by hand the propeller should rotate freely with the

same resistance as before the bearing bolts were tightened.

•Tighten all setscrews to the proper torque rating (see chart)

•Install pulley and adjust belt tension.

You should go through the start up steps as outlined above.

PARTS LIST

MODELS: DDS, DDP, ADD

MOTOR 1

WELDED FAN ASSEMBLY

PROPELLER BUSHING

FAN ASSEMBLY

PROPELLER

DESCRIPTION QUANTITY

ITEM

PARTS LIST

MODELS: XB, HV, HVA

DRIVEN SHEAVE BUSHING

MOTOR SHEAVE BUSHING

FAN ASSEMBLY

PILLOW BLOCK BEARINGS

DRIVEN SHEAVE

"V" BELTS

FAN SHAFT

PROPELLER

PROPELLER BUSHING

DESCRIPTION

MOTOR SHEAVE

ITEM

QUANTITY

1WELDED FAN ASSEMBLY

MOTOR

M0112

FAN TROUBLE SHOOTING GUIDE

PROBLEM POSSIBLE CAUSES

Impeller or sheaves loose

Belts not tensioned properly

Bent shaft

VIBRATION Out of balance impeller

Loose fasteners

Loose or worn bearings

Drive misalignment

Fan not properly installed

Mismatched belts

Out of balance sheaves

Improper fan installation

Static pressure higher than design

MOTOR OVERLOADING Impeller rotating in the wrong direction

Improper fan speed

Defective motor

Fan speed higher than design

Filters missing

TOO MUCH AIR Static pressure lower than design

Fan speed higher than design

Lack of electricity to the fan

Fan wired improperly

Broken or missing belt

FAN DOES NOT OPERATE Missing or blown fuses

Overload protection has broken circuit

Defective motor

Impeller or sheaves loose

Belts not properly tensioned

Sheaves not properly aligned

Impeller out of balance

Sheaves out of balance

EXCESSIVE NOISE Bent shaft

Bearings defective or need lubrication

Worn belts

Vibration or lack of isolation

Loose fasteners

High velocity air

M0112

TYPICAL INSTALLATIONS

Wall exhaust fan with cabinet, back guard and shutter

The above drawing illustrates the typical installation of an exhaust fan with cabinet,

back guard and shutter in a masonry wall. The installer shall provide angle iron framing

and suitable fasteners (hex bolts or lag screws) to support the fan. The cabinet and

framing should be caulked to the exterior wall. Fans with motors in excess of 50

pounds should also be supported using hanging rods or by supports placed underneath

the fan.

ANGLE IRON

SUPPORTS

BY OTHERS.

WO B

EXHAUST WALL FAN C/W CABINET, SHUTTER AND BACKGUARD

DDS,DDP,ADD

48 48

XB,HV,HVA

53 7/8

26*

54 7/8

59 7/8

+ For 15 hp and 20 hp add 8"

* For 7 1/2 hp and 10 hp add 6"

60 7/8 26*+

26*+ 68

47 7/8

41 7/8

35 7/8

29 7/8

24 1/4

22 1/4

20 1/4

18 1/4

16 1/4

23 1/4

36 7/8

48 7/8

42 7/8

30 7/8

25 1/4

17 1/4

21 1/4

19 1/4

26*

A B

Wall supply fan with cabinet, back guard, motorized shutter and weather hood

The above drawing illustrates the typical installation of a supply fan with a cabinet,

back guard, motorized shutter (with end switch), and weather hood in a masonry wall.

The installer shall provide angle iron framing and suitable fasteners (hex bolts or lag

screws) to support the fan. The cabinet and framing should be caulked to the exterior

wall. The weather hood can either be attached to the cabinet or fastened to the wall and

then caulked. These fans should either be supported by hanging rods or by supports

placed underneath the fan.

ANGLE IRON

SUPPORT BY OTHERS

Hood Free Area

ANGLE IRON SUPPORTS BY

OTHERS.

M0112

SUPPLY WALL FAN C/W EXT. CABINET BACKGUARD, MOTORIZED 3200 SER. SHUTTER AND WALL HOOD

2424

38+

32*

DDS,DDP,ADD

XB,HV,HVA

20 1/2

14 1/2

B C

30 7/8

36 7/8

42 7/8

48 7/8

54 7/8

60 7/8

25 1/4

17 1/4

19 1/4

21 1/4

23 1/4

36 1/4

42 1/4

48 1/2

54 1/2

73 1/4

65 1/4

58 1/2

52 1/2

46 1/4

40 1/4

16 1/2

22 1/2

24 1/2

20 1/2

18 1/222 1/2

28 1/2

26 1/2

24 1/2

20 1/2

+ For 15 hp and 20 hp add 8"

* For 7 1/2 hp and 10 hp add 6"

53 7/8

59 7/8

22 1/4

47 7/8

41 7/8

35 7/8

29 7/8

24 1/4

20 1/4

18 1/4

16 1/4

14 1/2

WARRANTY

Canarm/LFI Limited warrants this equipment to be free from defects in material

and workmanship for a period of one year from the date of sale. The motor

manufacturer warrants motors for a period of one year. Should motors, supplied by

Canarm/LFI Limited, prove to be defective during the warranty period they should be

returned to the nearest authorized motor manufacturer’s warranty depot.

Any fans or parts, which prove to be defective during the warranty period, will be

repaired or replaced at our option when returned to our factory transportation prepaid.

A return authorization number, that is to be obtained our customer service department,

must accompany all returns to Canarm/LFI Limited.

Canarm/LFI Limited will not be responsible for any removal or installation costs.

CANARM LTD.

2157 Parkedale Avenue, Brockville, Ontario K6V 5V6 Canada

Ph: (613) 342-5424

Fax: (613) 342-8437

www.canarm.com

July 2003

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