Applied Air DFC - Maintenance and Lubrication Schedule; Maintenance Schedule; Lubrication Instructions

– 27 –
SECTION VIII - MAINTENANCE SCHEDULE AND LUBRICATION REQUIREMENTS
f. Inspect all electrical components, connections and
terminals. Clean and tighten where necessary.
g. Test ignition spark. Adjust gap if necessary.
h. Clean ignition electrodes and check for cracks.
i. Test flame safeguard relay and replace components if
necessary.
j. Inspect all regulators, relief valves, motorized valves,
solenoid valves, vent valves, manual shut off valves
and safety shut off valves. Check their operation and
clean as necessary.
k. Ensure all vents to the atmosphere are clean and free
from obstruction.
l. Inspect and clean all drip legs in the fuel line.
m. Lubricate fan motor as directed by motor manufac-
turer.
n. Inspect fan motor wiring for loose connections.
o. Lightly oil all door latches.
p. Check that cabinet is weathertight, replace door
gaskets and recaulk as necessary.
NOTE: Keep screened air intakes clear of obstruc-
tions at all times.
B. Lubrication Instructions
Item Manufacturer Bearing Type
All 3 phase US., Baldor Single row ball
fan motors or equal bearings
(1 HP to
100 HP)
ODP, TEFC
Recommendation: See following note.
All 1 phase Century, G.E., Bronze sleeve
motors or equal bearings
(Fractional
HP) ODP,
TEFC or
TEAO
Recommendation: See following note.
Fractional HP Century, G.E. Bronze sleeve
single phase, or equal bearings
ODP or
TEFC
Recommendation: See following note.
Fan shaft Browning Self-aligning
bearings or equal single row or
double row roller
or ball bearings,
resilient mounted
Recommendation: See following note.
Dampers Mestek Sleeve
or equal
Recommendation: See following note.
Periodic maintenance is essential to the efficient
operation and extended service life of this equipment.
Failure to provide maintenance as recommended may
void the equipment warranty.
A. Maintenance Schedule
1. Weekly
a. Check that fan belts are tight and sheaves are
aligned. The fan belts can be checked every 30 days
after the first 60 days of new belt run-in.
CAUTION: Do not overtighten belts.
2. Monthly
a. Check all valves, piping and connections for leaks.
b. Check the flame signal.
c. Check the fuel pressure in the fuel supply line to each
heater.
d. Check the burner manifold pressure at full fire and
that low fire has a continous flame all across burner.
e. Clean the flame sensor(s).
f. Inspect filters. Clean or replace as necessary.
g. Inspect the main fan bearings.
h. Check all dampers, damper actuators and linkages.
Adjust and tighten if necessary.
i. Ensure that there are no obstruction blocking the air
supply to the heater or the air discharge from the
heater.
j. Inspect the area and make sure that no combustible
or hazardous material has been stored within the
clearances as shown on the unit nameplate.
3. Quarterly
a. Complete the monthly maintenance schedule.
b. Check the belt tension for the main fan(s) and adjust if
necessary.
c. Check the alignment of the sheaves and adjust if
necessary.
d. Inspect all bearings set screws for tightness and
lubricate bearings if necessary.
e. Check the pilot electrical system (if applicable). Adjust
if necessary.
f. Check the pilot assembly (if applicable). Clean and
adjust if necessary.
g. Inspect the burner carefully. Clean and adjust if
necessary.
h. Check voltages and amp draw on main fan motor.
i. Check the operation of all safety controls individually.
j. Check the operation of the automatic gas shut off
valves and check them for leakage at the pressure
test ports provided.
4. Off Season or Yearly
a. Complete the monthly and quarterly maintenance
schedule.
b. Inspect all fan wheels and housings. Clean if necessary.
c. Check that all fan wheels and sheaves are securely
set on the shaft.
d. Inspect all bearings and alignment. Adjust if necessary.
e. Inspect all V-belts. Replace if necessary.