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Trane Q Fan, Руководство по установке

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Table 14, as shown below, can be
used to diagnose apparent
problems or failures in the fan.

This table is intended as a
diagnostic aid only. For detailed
diagnostics and repair, contact your
local Trane Service Company.

QFNA-IOM-1

29

Troubleshooting

Table 14 —Fan Troubleshooting

Symptom

Cause

Remedy

Excessive vibration or noise

(See Table in General

Maintenance section)

Components worn, misaligned, or

loose

Replace, re-align, or tighten parts. Align

bearing screws, if needed. Loosen and

Retighten bearing set screws.

Wheel unbalanced

Balance Wheel

Over tensioned belts

Adjust belt tension

Misaligned drive

Align drive

Isolation system not functioning

properly

Inspect and adjust isolators

Foreign material in fan housing

Clear housing

Bearing defective, contaminated, or

not lubricated properly

Replace or lubricate bearing as needed

Bent shaft

Correct shaft alignment

Bearing is excessively hot

Note: Bearings on high-speed

fans can run 75

°

above

ambient

First start after lubrication; grease

has not fully redistributed

Clean surface of grease and purge

Parts over lubricated

Clean surface of grease and purge

Belts over tensioned

Adjust belt tension

Parts not lubricated properly

Apply lubricant. Check bearings for

damage

Misaligned bearing

Correct alignment. Check shaft level

Loose fan belt

Motor is poorly positioned

Adjust tension

Worn or damaged belt

Replace belt. Check sheave alignment

Worn sheaves

Replace sheaves

Short belt life

Worn sheaves

Realign drive with MVP sheave set at

mean pitch diameter

Misaligned belt

Realign drive with MVP sheave set at

mean pitch diameter

Grease or oil on belts

Check for leaky bearings. Clean belts and

sheaves

Belts slipping

Adjust tension

Belts rubbing

Remove obstruction or re-align drive for

clearance

HP too high

Fan speed above design

Check for leaky bearings. Clean belts and

sheaves

Static pressure above design

Low CFM

Leaks or obstruction in duct system Fix leaks and remove obstruction

Access door open

Close door

RPM too low

Check fan RPM and adjust as needed

System resistance higher than

design

Variable inlet vanes partially closed Open vanes

Содержание Q Fan

Страница 1: ...n this booklet should be done by qualified experienced technicians Installation QFNA IOM 1 Library Service Literature Product Section Air Handling Product Fans Model Q Fan and Super Q II Fan Literature Type Installation Operation Mainteance Sequence QFNA IOM 1 Date August 1997 File No SV AH FAN QFNA IOM 1 897 Supersedes FAN IM 3 975 Model Q Fan and Super Q II Plus X39640481 01 American Standard In...

Страница 2: ... 14 Wheel Alignment 15 Arrangements 1 and 9 15 Q Fan Duct Connections 17 Super Q II Duct Connections 17 Installation Super Q II 18 Preparation for Mounting 18 Ceiling Mounting 18 Floor Mounting 18 Accessories Installation 19 Inlet Vanes 19 Silencer 19 Start Up Q Fans and Super Q Fans 20 Start Up Procedures 20 Determining Fan RPM 20 Maintenance 21 Establishing A Schedule 21 V Belt Drive 21 Variable...

Страница 3: ...1 3 Model Number Selection Category Description of Selection Model Number Digit FAN Q Fan QF 1 2 Type Standard N Super Q II C Development Sequence A 4 Size 16 16 5 6 19 19 21 21 24 24 27 27 30 30 33 33 36 36 40 40 44 44 49 49 54 54 60 60 Arrangement Arrangement 1 1 7 Arrangement 9 9 Special S Class 1 1 8 2 2 3 3 Special S Continued on next page Product Description MODEL QFNA TYPE SQ2 SIZE 40 ARRG ...

Страница 4: ... Option Inlet Vanes A 13 Inlet Screen B Inlet Flange D Inlet Bell E Inlet Bell with Inlet Screen F Short Inlet Silencer 1 Long Inlet Silencer 2 Special S None 0 Outlet Option Outlet Duct Equalizer A 14 Outlet Flange B Outlet Screen C Outlet Duct Equalizer with Outlet Flange D Short Outlet Silencer 1 Long Outlet Silencer 2 Special S None 0 Motor Supplied Mounted By Trane Supplied Trane Mounted 1 15...

Страница 5: ...eed 1 Winding D ODP Motor High Efficiency 1800 900 RPM 2 Speed 2 Winding E ODP Motor Premium High Eff E 3 1800 RPM 1 Speed 1 Winding F TEFC Motor 1800 RPM 1 Speed 1 Winding G TEFC Motor High Efficiency 1800 RPM 1 Speed 1 Winding H TEFC Motor Premium High Eff 3 1800 RPM Speed 1 Winding J Special S Voltage 115 Volt 60 Hertz 1 Phase A 18 230 Volt 60 Hertz 1 Phase B 200 Volt 60 Hertz 3 Phase C 208 Vol...

Страница 6: ...nts WB 1 22 None 0 Special S Isolator Free Standing Spring Floor B 23 Housed Spring Floor C Double Deflection Neoprene Floor D Double Deflection Neoprene Ceiling E Spring Ceiling F Spring and Neoprene Ceiling G Spring Rails Floor H Neoprene Wall J Steel Base with Spring Floor K Concrete Inertia Base with Spring Floor L None Special S Duct Duct Canvas A 24 None 0 Special S Special Coating Baked Phe...

Страница 7: ... S Enhancement Double Acoustic A 27 None 0 Special S Access Door Access Door Motor Side 1 28 Access Door Opposite Motor Side 2 Access Door 90 Right of Motor 3 Access Door 90 Left of Motor 4 None 0 Special S Drain Drain A 29 None 0 Special S Mounting Leg Inlet Mounting Leg A 30 Outlet Mounting Leg B None 0 Special S Motor Frame Size 56T A 31 143T B 182T C 184 D 213T E 215T F 254T G 256T H 284T J 28...

Страница 8: ...an occur due to rough handling during shipment and installation Follow all instructions in this manual to assure a successful installation Failure to follow these instructions may void the warranty THIS MANUAL SHOULD BE KEPT WITH THE FAN UNIT SINCE IT CONTAINS INFORMATION FOR PROPER MAINTENANCE AND TROUBLESHOOTING Warnings and Cautions Notice that WARNINGS and CAUTIONS appears at appropriate inter...

Страница 9: ...ct the unit from the elements Where outside storage is necessary several precautions are needed First cover the inlet bearing and drive opening then place unit in an area with good drainage and cover with a tarp if possible Do not use plastic to completely cover the unit at the risk of trapping condensation This type of covering can cause excess moisture condensation and rusting DO NOT STACK FANS ...

Страница 10: ...must be mounted horizontally When ceiling suspension is required the fan must be set on an integral base which is hung from the ceiling Arrangement 1 For units size 27 44 Class I and II Use an integral steel or concrete base rather than individual isolators Mount the fan horizontally as shown in Figure 2 Arrangements 1 and 9 For units size 16 44 Class Ill Provide a rigid integral steel base or pre...

Страница 11: ...5 135 180 NA NA NA NA 155 200 21 24 190 220 210 255 NA NA NA NA 230 285 27 30 260 325 300 375 NA NA 315 385 335 415 33 36 410 525 465 600 425 545 480 615 515 655 40 44 690 920 775 1010 705 920 790 1025 830 1070 49 54 1020 1090 1075 1140 NA NA NA NA NA NA 60 1730 1830 NA NA NA Note NA This combination of arrangement class and size is not available Figure 2 Integral Base for Arrangement 1 Top View ...

Страница 12: ... in the slots holding block off to belt guard See Figure 6 Locate the edge of the rear panel assembly on gasketing approximately 1 4 from the drive hole Refer to Figure 7 Center the rear panel over the drive hole in the shell and secure with the self drilling screws provided as shown in Figure 8 Arrangement 1 Remove the motor pedestal support and belt guard from the top of the unit and bolt the F ...

Страница 13: ...igure 3 Shows Motor Mount Angle Adjustment Figure 4 Motor Rotation Inlet End Figure 5 Belt Guard Disassembled Figure 6 Motor and Sheave Arrangement Figure 7 Rear Side Assembly of Belt Guard Figure 8 Fan Discharge Airflow Inlet Side View ...

Страница 14: ...he drive several times As a check on multiple belt drives determine that the force of deflection is approximately the same by pushing each belt in an equal distance at a point halfway between the sheaves After realignment tighten the belts to a reasonable tension Operate the unit a few minutes to allow belts to seat See Start Up Belts should not slip when running but a slight squeal at startup is ...

Страница 15: ...nal adjustment can be obtained by loosening from bearing bracket and readjusting position Retighten all fasteners and torque per Tables 4 and 5 Tip clearances are given in Table 3 and bolt torques in Table 4 and 5 Check the spacing between the rear edge of the fan wheel and diffuser cylinder If this spacing is not as shown in Figure 11 move the fan wheel on the shaft for proper measurement To achi...

Страница 16: ... 110 Table 3 Tip Clearance Between Wheeland Housing Class 1 2 and 3 Bolt Dia Inches Torque Ft Lb 1 4 6 5 16 12 3 8 24 7 16 52 1 2 69 9 16 99 5 8 150 Table 4 Recommended Torques for Wheel Bolts Wheel Bolts are on Fan Sizes 49 60 Only Bolt Dia Inches Torque Ft Lb 1 4 6 5 16 12 3 8 20 7 16 43 1 2 58 9 16 76 5 8 115 3 4 195 Table 5 Nut and Bolt Torque Requirements for Fan Housing and Bearing Supports ...

Страница 17: ...weight The same applies to Arrangement 1 fans which are always floor mounted Note Flanged connections require inlet or outlet flange accessory Access doors should be provided in the inlet and outlet ducts if the flexible connections do not permit sufficient access to the fan The access doors should be large enough to make possible visual inspection of the bearing at the fan inlet and removal of th...

Страница 18: ...el rods one connected to each corner of the support rail Use large heavy gauge washers to insure the unit remains attached to the rods Floor Mounting Before unit startup always remove the shipping hold down screws from the bottom of the unit to free the isolators There is one screw at each end of the hat section Use the plug buttons provided in the bag attached to the unit to cover the holes 18 QF...

Страница 19: ...when ordered are shipped loose from the manufacturer and are field installed They must be connected to the Q fan using the flexible duct connector but they can be either rigid or flex connected to the Super Q fans Silencers are sized for Q Fan and Super Q Fan collars The support structure for silencers and flex connectors are provided by the installer Inlet silencer has a fixed center body and sho...

Страница 20: ...an wheel for proper rotation When facing the inlet the wheel must rotate clockwise If the fan has inlet vanes they can be partially closed to lower power requirements at start up On fans with multi speed motors run initial checkout at low speed Pay particular attention to any vibration noise or overheating of the fan bearings and motor bearings may run warm during break in Vibration is the most co...

Страница 21: ...he bolts for tightness Springs should be inspected for cracks and fatigue and replaced if necessary Rubber isolation should be checked for deterioration Keep oil grease chemicals and dirt away from isolators Wheel and Housing All bolts and setscrews on the entire fan should be checked for tightness Retighten according to Tables 4 5 10 11 and 13 Any dirt accumulation on the wheel or in the housing ...

Страница 22: ...unt of grease that is possible to reach purge purge point at which grease is visually seen escaping from the bearing seals For most ambient temperatures 0 to 150 F use a high quality all purpose Lithium Lithium complex based 2 EP grease Mobilith AW 2 Texaco Starplex 2 Shell Alvania 2 or equivalent For extreme ambient conditions less than 0 F and more than 150 F a synthetic or specialty purpose gre...

Страница 23: ...motor severe moderate service See lubrication instruction on motor nameplate or on tag attached If motor has grease fitting and relief plugs remove and clean out any hardened grease Add fresh grease at the fitting with a low pressure gun Run the motor a few minutes to expel grease through the relief vent Replace all plugs fittings When very dirty and high temperatures exist and for motor with hp 1...

Страница 24: ...prevent imbalance Inspect for any accumulation of dirt on inlet cone Clean as needed Touching up paint on fans and accessories occasionally will prevent deterioration of metal and maintain fan performance This is especially important on units having special coatings Every year Grease motor moderate clean service See lubrication instruction on motor nameplate or on tag attached If motor has grease ...

Страница 25: ...ng onto shaft never hammer the ends of the inner race Setscrews 2 should be toward end of shaft If nec essary to apply force use a brass bar against the inner race only to drift bearing into place 4 Bolt flanged housing to support and check freedom of rotation See Table 10 for torques 5 Tighten self locking cup point setscrews securely onto the shaft See Table 10 for torques QFNA IOM 1 25 Bearing ...

Страница 26: ...ven in Table 11 5 Rotate shaft by hand to check freedom of rotation Any condition of strain irregular rotational torque abnormal sound or vibration may be due to improper alignment improper location bent shaft etc Installation should be rechecked and corrections made as required Note After installing or readjusting bearings wheel alignment and tip clearances must always be rechecked 26 QFNA IOM 1 ...

Страница 27: ...apered OD of the sleeve until the bearing measured clearance is reduced by the amount shown in Table 12 8 The proper method of tightening is shown in Figures 17 and 18 Using a spanner wrench tighten the lock nut until snug Hold the adapter sleeve from turning until seated firmly Using a brass bar and hammer drive the face of the locknut as shown to relieve the thread pressure Retighten the lock nu...

Страница 28: ...illow Blocks Pillow Block Range Bore Size Inches Torque Ft Lb P LB 6823 thru P LB 6840 1 7 16 2 1 2 45 50 P LB 6841 thru P LB 6852 2 9 16 3 1 4 90 100 P LB 6853 thru P LB 6856 3 5 16 3 1 2 160 180 P LB 6857 thru P LB 6864 3 9 16 4 90 100 P LB 6865 thru P LB 6872 4 1 16 4 1 2 160 180 P LB 6873 thru P LB 68104 4 9 16 6 1 2 400 440 Figure 18 Using a Brass Bar and Hammer to Relieve Thread Pressure Fig...

Страница 29: ...First start after lubrication grease has not fully redistributed Clean surface of grease and purge Parts over lubricated Clean surface of grease and purge Belts over tensioned Adjust belt tension Parts not lubricated properly Apply lubricant Check bearings for damage Misaligned bearing Correct alignment Check shaft level Loose fan belt Motor is poorly positioned Adjust tension Worn or damaged belt...

Страница 30: ... 1 Fan speed above design 2 Static pressure above design Low CFM 1 Leaks or obstructions in duct system 2 Access door open 3 RPM too low 4 System resistance higher than design 5 Variable inlet vanes partially closed High CFM 1 System resistance below design 2 RPM too high Overheated Bearing Bearings on high speed fans can run as high as 75 F above ambient They may feel very warm with no problem be...

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