Proheat M125 - Manual (Page 79)

PROHEAT M-SERIES G-II PCM SERVICE MANUAL 5-2
1. Clean Heater Enclosure
• Clean any accumulated debris or dust from the components.
• Make sure the opening around the exhaust pipe is clear.
• Visually inspect all the components for wear or damage.
• Ensure that the burner head air intake is clear.
• If used – inspect the Air intake Snorkel tube & diffuser for damage,
kinks, debris or other restrictions. Ensure the air intake snorkel is
secure and all clamps are tight.
• Do not pressure wash.
2. Check Exhaust System
• Check the exhaust system carefully.
• Make sure the exhaust pipe is vented safely away from the vehicle.
• Check the pipe for holes, dents, restrictions or severely corroded areas.
• Ensure all heat shields and or thermal blankets are in serviceable
condition.
• Ensure the exhaust pipe clamp is tight and the exhaust pipe is secure.
• Replace the exhaust pipe and clamps if necessary.
3. Check Heat Exchanger
• Remove the burner head assembly and combustion tube to access
the inside of the heat exchanger.
• Inspect and clean the inside and outside of the combustion tube.
• To maintain optimum heat output, clean any combustion deposits
that may have accumulated on the heat exchanger fins.
• Use a wire brush to loosen the deposits and a vacuum to suck them out.
• Ensure exhaust pipe is clean and free from restriction.
• Alternate heat exchanger cleaning method: The inside of the heat
exchanger & exhaust pipe may be cleaned using a pressure washer or
steam cleaner. Ensure all exposed electrical connectors are protected
from the water and do not get wet. DO NOT pressure wash or steam
clean the outside of the heat exchanger or any part of the burnerhead.
4. Check Cooling System
• Check all heater hoses and connections for signs of leakage, cracks,
hardening or any other damage.
• Repair or replace as required.
5. Check Power Source
• Check the condition of the power source and connections. The heater
will not function properly with a faulty power source or corroded
connections.
• Check that all of the seals on the power connector are present and in
good condition. Replace if necessary.
ANNUAL MAINTENANCE 5.2
ORIENTATION
BOSS
HEAT EXCHANGER
FLANGE NOTCH
Figure 5-2: Heat Exchanger.
WARNING
Shock hazard due to voltage.