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HEATER MAINTENANCE CHECKLIST
WARNING
WARNING.
Disconnect heater from the power supply before opening enclosures or servicing heater.
Lock the switch in the
“OFF”
(open) position and/or tag the switch to prevent unexpected power application. For
heaters marked "IIC", ensure to loosen the setscrew before removing the cover.
This heater should only be serviced by personnel with heating and hazardous location equipment experience.
Heater Model
Serial Number
Comments
Date of Maintenance
Maintenance Done By
A.1 Periodic
•
Clean
Finned Tubes
Cabinet top and below unit
Remove dust using compressed air. Do not spray
with water or solvents. Do not immerse in water
or solvents
•
Check
All explosion-proof covers for tightness.
A.2 Annual
•
Mechanical Check
Check all enclosures
. Inside of enclosures
must be clean, dry, and free of foreign materials.
Enclosure joints are metal to metal. Do not use
gasket material or sealant in joints.
Check the tightness of all hardware.
All nuts and
bolts must be tight.
Turn heater on for a minimum of five minutes.
Check for warm air exiting heater through top vents.
•
Electrical Check
Check all terminal connections and conductors.
Tighten loose connections. Conductors with
damaged insulation must be replaced.
Check all explosion-proof conduits.
Replace
damaged conduits, unions, and plugs. Ensure 5
turns of engagement on all threaded connections.
(before and as required during heating season)
(before heating season)
For assistance, please call
Toll Free: 1-800-661-8529 (24 hrs)
U.S. & Canada
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