Ruffneck AH-12A, Installation, Operation & Maintenance Instructions Manual

Page: 3 / 36

3
H
ea
ter
M
ain
ten
an
ce
C
hec
klis
t
A. HEATER MAINTENANCE CHECKLIST
WARNING
WARNING.
Heater should only be serviced by qualified personnel with heating equipment
experience. Lock the switch in the
“OFF”
(open) position and/or tag the switch to prevent
unexpected power application.
Heater Model
Serial Number
Comments
Date of Maintenance
Maintenance Done By
A.1 Period
1. Clean
Finned Tubes
Fan
Fan Guard
Motor
Louvers
2. Check
Motor for smooth, quiet operation
Louvers for proper angle and tightness
Electrical junction box cover for tightness
Remove dust using compressed air. Do not spray with water or solvents.
A.2 Annual
1. Electrical
Check all terminal connections and conductors.
Tighten loose connections. Conductors with
damaged insulation must be replaced.
2. Mechanical
Check for fluid leakage. If any fluid leakage occurs
from the heater, remove it from service and have the
heat exchanger replaced. A factory supplied heat
exchanger can be shipped in less than a week from
stock. Refer to Section G. Repair & Replacement,
page 15 section for details.
Electrical junction box. Inside of enclosure must be
clean, dry, and free of foreign materials. Cover must
be completely on and tight.
Check motor shaft bearing play.
Replace motor if
play is excessive or if motor does not run quietly and
smoothly. Motor bearings are permanently lubricated.
Check fan. Replace immediately if cracked or
damaged.
Check louvers. Louver screws should be tight.
Louvers are not to be closed more than 75˚ from
horizontal.
Check the tightness of all hardware. All nuts and
bolts, including mounting hardware, must be tight.
TURN HEATER MOTOR ON FOR A MINIMUM OF
15 MINUTES.
Check for air exiting heater through
louvers and smooth running of fan motor.
Photocopy
this page
for reuse.
(before and as required during heating season)
(before heating season)
For assistance, please call
Toll Free: 1-800-661-8529
U.S. & Canada