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MAINTENANCE (cont.)
FUEL FILTER
CLEAN OR REPLACE TWICE PER HEATING SEASON OR AS
NEEDED.
Fuel Filter
Fuel Line
Screw
Side Cover
Power Switch
Figure 18 – Fuel Filter Replacement
- Remove side cover screws using medium Phillips
screwdriver.
- Disconnect switch wires from power switch and remove
side cover.
- Pull fuel line off fuel filter neck.
- Turn fuel filter clockwise 90 degrees and pull to remove.
- Wash fuel filter with clean fuel and replace in tank.
- Attach fuel line to fuel filter neck.
- Reinstall side cover.
4 15
Switch Wires
PUMP PRESSURE ADJUSTMENT
Flat blade
Screwdriver
Pressure Gauge
Figure 19 – Adjusting Pump Pressure
- Start heater (See "Operation", page 10).
- Allow motor to reach full speed.
- Adjust pressure (using flat blade screwdriver).
- Turn relief valve clockwise to increase pressure.
- Turn relief valve counterclockwise to decrease pressure.
- Set pump pressure to correct pressure for each model.
- Stop heater (see "Operation", page 10).
Model
Pump Pressure
CP125AK
5.5 PSI
CP170AK
6.5 PSI
CP210AK
8.5 PSI
NOTE: USE ONLY ORIGINAL EQUIPMENT REPLACEMENT
PARTS. Use of alternate or third party components will void
warranty and may cause an unsafe operating condition.
Relief Valve
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