I.
HEATER MAINTENANCE INSTRUCTIONS
Heater Model
Serial Number
Comments
(before and as required during heating season)
I.1
Periodic
1.
Clean - use compressed air only
Heating Elements
…
Louvers
…
Motor
…
Inlet Grille
…
…
Fan
I.2
Annual
(before heating season)
1.
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. Disconnect heater from power supply at
disconnect or fuse box before opening enclosures or
servicing heater.
WARNING
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. Use this heater only as described in this
manual. Any other use not recommended by the
manufacturer may cause fire, electric shock, or injury
WARNING
to persons.
Date of Maintenance
Maintenance Done By
2.
Mounting & Motor Check
All mounting hardware condition and tightness
…
Motor for smooth, quiet operation
…
2.
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.
15