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484885 • Open Plenum Array, Rev. 1, June 2021 

Copyright 2021 © Greenheck Fan Corporation

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As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications 
without notice.

Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature 
section of the website at Greenheck.com/Resources/Library/Literature.

®

Phone: 715.359.6171 • Fax: 715.355.2399 • Parts: 800.355.5354 • E-mail: [email protected] • Website: www.greenheck.com

Our Commitment

AMCA Publication 410-96, Safety Practices for Users and Installers of Industrial and Commercial Fans, provides additional safety 

information. This publication can be obtained from AMCA International, Inc. at www.amca.org.

Parts List

Wheel

Motor

Drive 
Frame

Problem

Cause

Corrective Action

Excessive Noise

Wheel rubbing (inlet)

Adjust wheel and/or inlet cone. 
Tighten wheel hub or bearing collars on shaft.

Wheel unbalance

Clean all dirt off wheel. Check wheel balance, rebalance in place if 
necessary.

Low CFM

Fan

Check wheel for correct rotation. Increase fan speed.*

Duct system

Check duct installations with poor inlet or discharge configurations.

High CFM

Fan

Decrease fan speed.

High Horsepower Fan

Check rotation of wheel. Reduce fan speed.

Fan Doesn’t 
Operate

Electrical supply

Check fuses/circuit breakers. Check for switches turned off or 
disconnected. Check for correct supply voltage.

Motor

Assure motor is correct horsepower and not tripping overload protector.

Excessive 
Vibration

System unbalance

Check wheel balance, rebalance if necessary.

* Always check motor amps and compare to nameplate rating. Excessive fan speed may overload the motor and 

result in motor failure. Do not exceed the maximum cataloged RPM of the fan.

NOTE: Always provide the unit model and serial numbers when requesting parts or service information.

Troubleshooting

Содержание OPA

Страница 1: ...ser le moteur refroidir avant toute maintenance ATTENTION Faire preuve de précaution dans les atmosphères explosives Only qualified personnel should install this array Personnel should have a clear understanding of these instructions and should be aware of general safety precautions Improper installation can result in electric shock possible injury due to coming in contact with moving parts as wel...

Страница 2: ...he array and accessories is indoors above grade in a low humidity atmosphere which is sealed to prevent the entry of blowing dust rain or snow Temperatures should be evenly maintained between 30 F 1 C and 110 F 43 C wide temperature swings may cause condensation and sweating of metal parts All accessories must be stored indoors in a clean dry atmosphere Remove any accumulations of dirt or debris a...

Страница 3: ...protect personnel Refer to local codes for requirements as to the number type and design Fully secure the wheel before performing any maintenance The wheel may start free wheeling even if all electrical power has been disconnected Before the initial start up or any restart check the following items to make sure that they are installed and secure Do not spin the wheel faster than the maximum catalo...

Страница 4: ... others All supply and or signal wiring should be secured to the array structure CAUTION When installing an array ensure the proper protective devices are used to protect personnel from moving parts and other hazards A complete line of protective accessories are available from the manufacturer Installation Example of Shim Stock Electrical Connections Before electrical connections are made the supp...

Страница 5: ...77 Taper Lock Bushing Installation Removal To Install Taper Lock Bushings 1 Clean shaft bore and outside of bushing and bore of hub taking bushings from hub if already assembled Remove any oil grease and dirt 2 Place hub onto shaft Slip bushing onto shaft and into hub Oil threads and points of setscrews or threads and under heads of capscrews DO NOT lubricate the hub bore or the outside of the bus...

Страница 6: ...rews and locking collars on the array bearings drive motor base and accessories for tightness 5 Rotate the wheel by hand and assure no parts are rubbing Remove any dirt or debris that may have accumulated during installation 6 Check all guarding if supplied for being securely attached and not interfering with rotating parts 7 Check all electrical connections for proper attachment 8 Check for obstr...

Страница 7: ...or at least bumped every thirty days It is preferred that each array is run as this causes all electrical and mechanical components to get up to temperature displacing any formed condensation redistributes load on bearings and redistributes grease in the bearings motor and shaft bearings CAUTION Always check the fan RPM when adjusting the operating frequency Do not exceed maximum class fan RPM of ...

Страница 8: ...el rubbing inlet Adjust wheel and or inlet cone Tighten wheel hub or bearing collars on shaft Wheel unbalance Clean all dirt off wheel Check wheel balance rebalance in place if necessary Low CFM Fan Check wheel for correct rotation Increase fan speed Duct system Check duct installations with poor inlet or discharge configurations High CFM Fan Decrease fan speed High Horsepower Fan Check rotation o...

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