Problem / Alarm Indication Possible Cause(s) Corrective Action(s)
Cooking fumes are not being
removed from the Kitchen
• Exhaust fan not operating correctly
• Capture Jet fan not operating correctly
• Exhaust fan is slowed or under sized
• Supply air is not balanced
• Excessive kitchen drafts
• Equipment moved from original position
• Equipment has changed
• Secondary treatment system needs service
• Check exhaust fan is powered on and running correctly
• Check supply air capture jet fan is running
• Check the required T�A�B� pressures, must be within 10% of value shown on
rating plate
• Check the exhaust fan is the correct size for required duty
• Check supply fan and adjust speed to balance kitchen
• Close doors and windows or turn off fans causing draft
• Check equipment list and revise exhaust system design as required
• Service filters
Excessive oil and grease at
discharge
• Filters are overloaded or not correctly fitted
• Hood and/or ductwork requires cleaning
• Check they are correctly installed
• Check and clean the inside of the hood exhaust plenum(s) and ductwork
• If problem persists, contact Stoddart�
Measured exhaust pressures
not per rating plate
(+/-10%)
• Exhaust/supply dampers not set correctly
• Poor seal around supply/exhaust collars
• Exhaust fan is under or over sized
• Supply fan is under or over sized
• Optional VFD is not adjusted correctly
• Check the required T�A�B� pressures and adjust the exhaust/supply dampers
• Check the supply and exhaust collars for a sufficient seal
• Replace exhaust fan with the correct size
• Replace supply fan with the correct size
• Adjust VFD settings
Lights not working
• Power not on
• Tubes, starter or ballast faulty
• Damaged, or incorrect wiring
• Supply power to the lighting circuit
• Replace damaged component
• Fix faulty wiring
Some lights don’t turn on
• Connections not made between hoods
• Faulty lights
• Check all lighting connections have been made between each hood section
• Replace the lights
• If problem persist, contact Stoddart�
Troubleshooting
• If any faults/issues occur with the unit, follow the below troubleshooting procedures
• If the troubleshooting procedures do not correct the problem, contact the Stoddart Service Department
Cleaning and Maintenance
To Next Page
