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SERVICE PROCEDURES
Continued
PUMP PRESSURE ADJUSTMENT
1.
Remove fan guard using medium phillips screwdriver.
2.
Remove pressure gauge plug from filter end cover (see Figure 9).
3.
Install accessory pressure gauge (part number HA1180).
4.
Start heater (see Operation, page 5). Allow motor to reach
full speed.
5.
Adjust pressure. Turn relief valve to right to increase pressure.
Turn relief valve to left to decrease pressure. See specifica-
tions below for correct pressure (see Figure 10).
6.
Remove pressure gauge. Replace pressure gauge plug in filter
end cover.
Pressure
Gauge
Plug
Figure 9 - Pressure Gauge Plug Removal
Pump
Model
Pressure
125TH
6.0 PSI
Figure 10 - Adjusting Pump Pressure
112865-01A
Relief
Valve
Pressure
Gauge
For more information, visit www.desatech.com
For more information, visit www.desatech.co
SERVICE PROCEDURES
FUEL FILTER
1. Remove control cover screws using medium phillips screwdriver.
2.
Remove control cover.
3.
Pull upper fuel line off fuel filter neck (see Figure 11).
4.
Carefully pry bushing, fuel filter, and lower fuel line out of
fuel tank (see Figure 11).
5. Wash fuel filter with clean fuel and replace in tank.
6.
Attach upper fuel line to fuel filter neck.
7.
Replace control cover.
Screw
Control
Cover
Fuel Filter, Bushing,
and Lower Fuel Line
Upper Fuel Line
Figure 11 - Fuel Filter Removal
9
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