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HEATER MAINTENANCE INSTRUCTIONS
Heater Model
Serial Number
Comments
Date of Maintenance
Maintenance Done By
Periodic (before and as required during heating season)
Clean - use compressed air only
Mounting & Motor Check
All mounting hardware condition and tightness
Motor for smooth, quiet operation
Annual (before heating season)
Mechanical Check
Check heating elements for corrosion and debris buildup.
Clean as required.
Check motor shaft bearing play. Replace motor if play is
excessive, or if motor does not run quietly and smoothly.
Bearings are permanently lubricated.
Check fan. Replace immediately if cracked, damaged, or out of
balance.
Check tightness of all hardware. All fasteners must be tight.
Turn heater on for a minimum of five minutes. Check for
warm air exiting heater through louvers.
Electrical Check
All terminal connections and conductors. Tighten loose
connections. Conductors with damaged insulation must
be replaced.
Electrical resistance on all load side legs. Reading should be
balanced (± 5%).
WARNING
WARNING.
Disconnect heater from power supply at
disconnect or fuse box before opening enclosures or
servicing heater.
Lock the switch in the
“OFF”
(open) position and tag
the switch to prevent unexpected power application.
This heater should only be serviced by qualified
personnel with electrical heating equipment experience.
WARNING
WARNING.
Use this heater only as described in this
manual. Any other use not recommended by the
manufacturer may cause fire, electric shock, or injury
to persons.
Heating Elements
Louvers
Motor
Inlet Grille
Fan
