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PN 471558
®
Downblast Centrifugal Roof Exhaust Fans
Installation, Operation and Maintenance Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions
could result in personal injury and/or property damage! Retain instructions for future reference.
Model G Model GB
Direct Drive Belt Drive
Model G is a direct
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Receiving Figure 2 Upon receiving the product, check to make sure all items are accounted for by referencing the bill of lading to Hook With Safety Latch ensure all items were received. Inspect each crate for (Supplied by others) shipping damage before accepting delivery. Notify the carrier if any damage is noticed. The carrier will make (2) Bearing Plate notification on the delivery receipt acknowledging any Lifting Points damage to the product. All damage should be noted on all the cop
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Storage Inspection and Maintenance Fans are protected against damage during shipment. If During Storage the unit cannot be installed and operated immediately, While in storage, inspect fans once per month. Keep a precautions need to be taken to prevent deterioration of record of inspection and maintenance performed. the unit during storage. The user assumes responsibility If moisture or dirt accumulations are found on parts, of the fan and accessories while in storage. The the source sh
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Installation WARNING Typical Roof Mounting Installation Installation, troubleshooting and parts replacement is 1. On the roof surface, cut an appropriate sized hole to be performed only by qualified personnel. and follow manufacturer’s instructions on curb installation. Caulk and flash the curb to ensure a WARNING water tight seal. 2. If unit is equipped with a backdraft damper, it should Disconnect power before installing or servicing. be installed now. CAUTION 3. Remove motor cover. Ac
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G - Direct Drive G Direct Drive Curb Roof *Approx. Figure 5 - Typical Roof Mounting Installation Model Damper Cap Opening Weight G 060, 065, 070, 075 17 (432) 8 (203) 10½ (267) 18 (8) Disconnect G 080, 085, 090, 095 17 (432) 10 (254) 12½ (267) 26 (12) Screws G 97, 98, 99 19 (483) 12 (305) 14½ (368) 57 (26) G 103, 103 HP 19 (483) 12 (305) 14½ (368) 62 (28) G 123 19 (483) 12 (305) 14½ (368) 65 (30) G 133 19 (483) 12 (305) 14½ (368) 66 (30) G 143, 143 HP 22 (559) 16 (406) 18½ (470) 76 (35) ¾ in. 8
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Pre-Starting Checks Wheel Rotation 1. Check all fasteners and set screws for tightness. The wheel should rotate freely and be aligned as shown Clockwise Rotation in Figure 7 below. All Models 2. Wheel position is preset and the unit is test run at the factory. Movement may occur during shipment and realignment may be necessary. 3. Only G unit - Centering height alignment can be Counterclockwise accomplished by loosening the set screws in the Airflow wheel and moving the wheel to the desir
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IMPORTANT Fasteners (4) *Fasteners Adjust (tighten) belt tension after the first 24-48 hours of operation. *Identical fasteners on opposing side must also be loosened. Inspection Inspection of the fan should be conducted at the first Figure 11 30 minute and 24 hour intervals of satisfactory operation. 30 Minute Interval 11. Belt tension can be adjusted by loosening four Inspect bolts, setscrews and motor mounting bolts. fasteners on the drive frame, see Figure 11. The Adjust and tighten
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11. During the first few months of operation, check Belt/Bearing Maintenance GB Unit bearing setscrews periodically to ensure tightness. 1. Belts tend to stretch after a period of time. 12. If unit is to be left idle for an extended period, They should be checked periodically for wear and remove belts and store in a cool, dry place to avoid tightness. When replacing belts, use the same type premature belt failure. as supplied with the unit. 2. Matched belts should always be used on unit
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Troubleshooting WARNING: Before taking any corrective action, make certain unit is not capable of operation during repairs. PROBLEM CAUSE CORRECTIVE ACTION Adjust wheel and/or inlet cone. Tighten wheel hub or bearing collars Wheel rubbing inlet on shaft. Tighten pulleys on motor/fan shaft. Adjust belt tension. Align pulleys V-belt drive properly, see page 6, Figure 9-10. Replace worn belts or pulleys. Replace defective bearing(s). Lubricate bearings. Tighten collars Bearings and fasteners.
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Maintenance Documentation Job Information Job Name: __________________________________ Service Organization: _________________________________ Address: ___________________________________ Address: _____________________________________________ City: _______________________________________ City: _________________________________________________ State: ______________ Zip: __________________ State: _______________ Zip: __________________________ Phone: _____________________________________ Phone: __
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G Direct Drive Centrifugal Roof Exhaust Fan Parts List NOTE Each fan bears a manufacturer’s name- Motor Cover plate with model number and serial number embossed. This information will assist the local Greenheck representative and the factory in providing service and Motor replacement parts. Before taking any Shock corrective action, make certain unit is Mounts not capable of operation during repairs. Hood Clip Shroud Shroud Brace Birdguard Vertical Wheel Support Lower Curb Cap/ Windba
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Roof Curb Installation Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the
