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PN 453283
®
Series L: Models LB, LBP, LD, and LDP
Low Silhouette Centrifugal Roof Exhaust Fans
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. 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!
Series L Exhaust Fans
Greenheck’s Seri
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while in storage. The manufacturer will not be Receiving responsible for damage during storage. These Upon receiving the product, check to make sure suggestions are provided solely as a convenience to all items are accounted for by referencing the bill the user. of lading to ensure all items were received. Inspect each crate for shipping damage before accepting Indoor delivery. Notify the carrier if any damage is noticed. The ideal environment for the storage of fans and The carrier wil
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Machined parts coated with rust preventive should oil. Do not destroy the continuity of the surfaces. ® be restored to good condition promptly if signs of Thoroughly wipe clean with Tectyl 506 (Ashland Inc.) rust occur. Immediately remove the original rust or the equivalent. For hard to reach internal surfaces ® preventive coating with petroleum solvent and clean or for occasional use, consider using Tectyl 511M with lint-free cloths. Polish any remaining rust from Rust Preventive, WD-40® or
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C l o c k Removing From Storage Pre-Starting Belt Tension Checks As fans are removed from storage to be installed 6. Always loosen tension enough to install belt in their final location, they should be protected without stretching, see Figure 3. and maintained in a similar fashion until the fan BELTS equipment goes into operation. Pre-Startup Checks 1. Check all fasteners for tightness. The wheel should rotate freely and be aligned as shown in Do not force belt(s). Forcing the Figure 1. b
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C l o c k G CORRECT WRONG WRONGWRONG WARNING Always disconnect, lock and tag power source before servicing. Failure to disconnect power source can result in fire, shock or serious injury. WARNING Belt Span Deflection = 64 Belt Span Uneven cleaning of the wheel will produce an out of balance condition that will cause vibration in the fan. WARNING This unit should be made non-functional when cleaning the wheel or housing (fuses removed, disconnect locked off). Figure 6 Belt/Bearing Maintena
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Parts List NOTE: Each fan bears a manufacturer’s nameplate with model number and serial number embossed. This information will assist the local Greenheck representative and the factory in providing service and replacement parts. Before taking any corrective action, make certain unit is not capable of operation during repairs. CAUTION: A fan manufactured with an explosion-resistant motor does not certify the entire unit to be explosion proof. Refer to UL Listing Mark for the fans approved usag
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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 Check system for proper operation of backdraft or System resistance too high control dampers; remove obstructions in ductwork, etc. Unit running backwards See Pre-Starting Checks. Reduced Airflow Fan speed too low Increase fan speed. Excessive dirt buildup on Clean wheel. wheel Improper wheel alignment Center wheel on inlets. Bad Bearings R
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Maintenance Log Date Time Notes Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase 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 return
