Procom ML170EHPC, Owner'S Operation And Installation Manual

Page: 14 / 28

14
CLEANING AND
MAINTENANCE
DISCONNECT WIRING OR CONTROL
MODULE
1. Remove two screws from the lower
front panel , pull the lower front panel
forward then down take out thermostat
sensing bulb from the clip, then disco-
nnect the wires from to control
module .
Note: Do not confuse the mark on
each wire.
2. Remove two screws and hex nuts,
Figure 20 Control Model Access
2. Mark or tag each wire removed for
its exact reconnection. Remove the
four screws from the fan, when
installing , reverse the steps above.
(See Figures 21, 23 and 24)
Figure 21- Fan Access
CLEANING ODS/PILOT AND BURNER
l Use a vacuum cleaner,pressurized
air to clean.
CLEANING BURNER AND PILOT
AIR INLET HOLE
We recommend that you clean the
unit every 2,500 hours of operation
or every three months. We also
recommend that you keep the burner
tube and pilot assembly clean and
free of dust and dirt.
To clean these parts we recommend
using compressed air no greater
than 30 PSl. Your local computer
store, hardware store, or home center
may carry compressed air in a can.
You can use a vacuum cleaner in the
blow position. If using compressed
air in a can, please follow the direc-
tions on the can. If you don ’ t follow
directions on the can, you could dam-
age the pilot assembly.
1. Shut off the unit, including the
pilot. Allow the unit to cool for
at least thirty minutes.
2. Inspect burner, pilot for dust
and dirt.
3. Blow air through the ports/slots
and holes in the burner.
Clean the pilot assembly also. A
yellow tip on the pilot flame indi-
cates dust and dirt in the pilot
assembly. There is a small pilot air
inlet hole about two inches from
where the pilot flame comes out of
the pilot assembly (see Figure 22).
With the unit off, lightly blow air
through the air inlet hole. You may
blow through a drinking straw if
compressed air is not available.
DISCONNECT FAN
1. Remove screws from the fan
bracket panel, pull the fan bracket
panel out to remove. Disconnect
two wires of temperature sensor.
CAUTION :
Label all wires prior to
WARNING:
WARNING:
Failure to keep
the primary air opening(s) of the
burner(s) clean may result in soot
causing property damage.
take out the control module. When
installing , reverse the steps above.
(See Figures 20, 23 and 24)
CLEANING HEATER CABINET
Air Passageways
l Use a vacuum cleaner or
pressurized air to clean.
Exterior
l Use a soft cloth dampened with
a mild soap and water mixture.
Wipe the cabinet to remove dust.
Figure 22 - Pilot Inlet Air Hole
disconnection when servicing
controls.Wiring errors can cause
improper and dangerous operation.
Verify proper operation after
servicing.
Disconnect
power before attempting any
maintenance or cleaning to reduce
the risk of fire , electric shock or
personal injury. Turn off heater and
let cool before cleaning.
CAUTION:
You must keep
control areas, burner, and circulat-
ing air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater Inspected yearly by a
qualified service person. Heater
may need more frequent cleaning
due to excessive lint from carpeting,
bedding material, pet hair, etc.