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SECTION 13: SERVICING
31 of 47
SECTION 13: SERVICING
13.1 Servicing Instructions
After start-up, the heater will require maintenance to
be carried out, at a minimum, annually. If the heater
is used in a dirty or dusty area, more frequent
maintenance may be required.
IMPORTANT: After any maintenance or repair work,
always test fire the heater in accordance with the
start-up instructions on Page 26, Section 11 through
Page 28, Section 11.3.1 to ensure all safety systems
are in working order before leaving the heater to
operate. Minor faults may be traced by using the
troubleshooting charts on Page 34, Section 14
through Page 38, Section 14.5.
IMPORTANT: Check all gas pipes and pipe joints to
ensure there are no cracks or gas leaks. Any cracks
in the pipes or pipe joints must be repaired.
IMPORTANT: Inspect all suspended components
and hardware. Ensure that they are in good
condition, properly tightened, and corrosion free.
13.2 Burner Maintenance
1. Open the door and remove the burner
compartment cover. See Page 40, Section
15.2.
2. Clean any deposits from the main burner which
may have formed in the injectors or venturi of
the bu
rner. See Page 40, Section 15.2.1.
3. Remove the ignition electrode and flame probe.
Check condition of ignition electrode and flame
probe. Clean off any deposits which may have
been formed, check condition of ceramic
insulators. Replace as required. See Page 41,
Figure 15.3.
13.3 Heat Exchanger Maintenance
The heat exchanger will remain clean unless a
problem has developed with combustion. Inspect the
heat exchanger. Look for signs of overheating at the
front tubes which may indicate burner over firing or
persistently low air flows.
13.4 Gas Valve Maintenance
No regular maintenance is required on this device.
To change gas control valves, See Page 39, Section
15.1.
Do not repair or disassemble gas valve.
Replace faulty gas valves with replacement parts
sold and supplied by Roberts-Gordon LLC.
13.5 Flue Blower
The flue blower should not require maintenance.
However, if the air pressure switch is causing burner
lockout, then remove the flue blower from the vent
box by unscrewing the three screws at the mounting
plate. Remove the four scre
ws attaching the
mounting plate to the fan inlet (See Page 42,
Section 15.5). Ensure that the fan is free to run and
that the fan wheel is clean.
13.6 Venting and Air Intake Pipe
Inspect all venting and air intake pipe. Ensure that
all seams are sealed and suspension points secure.
Repair suspension points if any part of the venting
or combustion air pipe is sagging. Check to make
sure any insulation is not missing or in poor
condition. Replace as required. Check all venting
and air intake components to ensure they are in
good condition, gas tight and corrosion-free.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Burn Hazard
Allow heater to cool
before service.
Tubing may still be hot
after operation.
Explosion Hazard
Turn off gas supply to
heater before service.
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
Heater must be
connected to a properly
grounded electrical
source.