Greenheck Fan LD AND LDP, LBP manual Troubleshooting, Maintenance Documentation, Job Information

Troubleshooting

WARNING: Before taking any corrective action, make certain unit is not capable of operation during repairs.

PROBLEM	CAUSE	CORRECTIVE ACTION
	System resistance too high	Check system for proper operation of backdraft or
		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	Replace.
	Belts too tight or too loose	Refer to Figure 4 and adjust tension.
	Wheel improperly aligned and	Center wheel on inlets. See Figure 1.
	rubbing
Excessive Noise
	Loose drive or motor pulleys	Align and tighten. See Pre-Start-up Checks.
or Vibration
	Foreign objects in wheel or	Remove objects, check for damage or unbalance.
	housing
	Unbalance of wheel caused
	by excessive dirt and grease	Remove buildup.
	buildup

Maintenance Documentation

Job Information

Job Name:___________________________________	Service Organization:__________________________________
Address:_____________________________________	Address:_____________________________________________
City:_________________________________________	City:_________________________________________________
State:________________ Zip:__________________	State:________________ Zip:___________________________
Phone:_______________________________________	Phone:_______________________________________________
Contact Person:______________________________	Work Done By:________________________________________

Nameplate Information		Field Start-Up Documentation
Model:_______________________________________
Volts:_ ________ Hertz:_________ Phase:_______		Actual Voltage:________ Hertz:_______ Phase:_________
Amps:_______________	Mark:_________________	Actual Amperage:_____________________________________
Supply hp:___________	Exhaust hp:___________	Blower Rotation:______________________________________
Serial Number:________________________________		Air Volume: Design cfm:______________________________
Model Voltage:________________________________		Actual cfm:______________________________
Motor Amperage:_ ____________________________		Level of fan (L or H):___________________________________
Fan RPM:_ ___________________________________		Fan RPM Range (min.)____________ (max.)______________

Series L: Models LB, LBP, LD, and LDP

®

7