S&P JENcoFAN EO, Installation, Operation And Maintenance Manual

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5
TROUBLE-SHOOTING CHART
The following is a list of common causes and corrective actions for possible problems with exhaust
hood systems. Please refer to this list prior to consulting manufacturer.
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
No Exhaust
Air Flow
Exhaust fan not operating
Check circuit breaker
Check fan disconnect
Check fan belt
Check fan controls
Incorrect exhaust fan rotation
Change any two wiring leads to 3 phase motor
Check rotation arrow in fan
Incorrect Exhaust fan on hood
Ensure correct fan is on hood and wired to
correct fan controls
No Make-Up
Air Flow
Make-up air fan not operating
Check circuit breaker
Check fan disconnect
Check fan belt
Check fan controls
Incorrect make-up air fan rotation
Change any two wiring leads to 3 phase motor
Check rotation arrow in fan
Damper closed Ensure damper is open
Static pressure in duct system higher than
design Do not use flexible duct. Insure duct is as direct
as possible from fan to hood
Filters in fan clogged Clean filters and replace
Fire system not armed or has been activated
Ensure micro switch on fire system is wired
properly. Arm fire system
Hood Not
Capturing
Smoke
Dirty grease filters Clean filters and replace
Negative pressure in kitchen space Increase make-up air (RPM/HP)
Insufficient exhaust air flow Increase exhaust fan (RPM/HP)
Static pressure in duct system higher than
design
Increase exhaust fan (RPM/HP). Increase duct
size. Ensure duct is as direct as possible from fan
to hood.
Incorrect exhaust fan rotation
Change any two wiring leads to 3 phase motor
Check rotation arrow in fan
Insufficient overhang on appliance
Size hood for adequate overhang.
Install end curtain(s)
Fan Cycles
On And Off
Motor over-amping
Check FLA of motor and adjust
Check for correct wire size to motor
Light Globes
Contain Water
Curb and/or duct leaking Check curb and/or duct for leaks and seal
Grease
Dripping From
Hood Hood not cleaned Adjust cleaning schedule
Exhaust air flow too low Increase exhaust fan (RPM/HP)
Grease
Dripping Past
Grease Tray
Grease tray installed upside down
Install grease tray with small portion of key hole
in the up position