Specifications

MONITOR HEATING SYSTEMS
Section 4: Maintenance
4-1 INTRODUCTION
Heater maintenance is divided into two classifica-
tions; periodic maintenance is required to maintain
the heater in good operating condition; corrective
maintenance is necessary to repair a malfunction.
4-2 PERIODIC MAINTENANCE
The Maintenance Schedule provided in Table 4-1
describes the tasks that must be performed periodi-
cally in order to sustain the efficiency of the Monitor
Heating Systems.
At the time of the demonstration or installation,
heater maintenance should be discussed with the
user; emphasize that a clean heater and proper fuel
are the keys to optimum heater operation and
performance.
Table 4-1 SUGGESTED MAINTENANCE ACTIVITIES
Activity
Material
Remarks
Check all fuel pipes for leaks and
loose connections
OD copper tubing
Fuel piping must be secure and
free of leaks, Replace tubing
when necessary.
Inspect exhaust piping for leaks or
loose connections
All exhaust pipes must be covered
by a cloth insulation cover.
If cloth cover shows signs of
discoloration at joints, check
o-rings.
Check fuel for water and/or other
contamination.
Fuel color should be clear, wheth-
er it's crystal clear or dyed red it
still should look clear not cloudy.
See Corrective Maintenance pro-
cedure paragraph 4-9.
Check and or replace fuel filter at
tank if dirty check and clean con-
stant level valve strainer, if dirty
drain constant level valve, if dirty
check and clean strainer on internal
fuel pump. Inspect fusible link valve
input fitting if used. Clean only if
necessary verify heater in level.
Inspect flue pipe for obstruction or
corrosion. High sulfur fuels can
produce holes in exhaust portion of
flue pipe, especially in extreme
cold areas, where flue pipe con-
densation occurs.
If blocked, clean and vacuum.
If corroded badly, replace.
Inspect electrical wiring for cracks,
signs of deterioration, bare wires
and/or loose connectors
WARNING:
UNPLUG HEATER BEFORE PRO-
CEEDING. HEATER MUST ALSO
BE COOL BEFORE STARTING.
Clean heater
Clean, lint-free cloth and a mild
non-abrasive household cleaning
agent. USE ONLY NON-
PETROLEUM DISTILLATE
CLEANERS.
Wipe down exterior of heater cabi-
net. Vacuum heater interior (if
necessary).
Clean Air Circulation Fan (Monthly)
Vacuum fan cage. Wipe fan
blades.
Inspect air piping for leaks or loose
connections.
Inspect rubber Air Hose at rear of
heater.
Look for cracks, wear, or signs of
deterioration; replace if necessary.
Clean fuel constant level Valve
filter. Inspect fusible link Valve
input fitting.
Clean only if necessary, Verify that
heater is level.
Clean Kerosene
Refer to paragraph 4-5. Procedure
is described in paragraph 4-6.
Check Leveling Guide.
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