14
104042
psi
Pump
(Procedure if pump is binding)
1. Remove upper shell (see page
12).
2. Loosen hex screw on flange
clamp at rear of motor with
5/16" nut-driver (see Figure
10).
3. Turn fan with hand (see Figure
11).
4. If fan turns freely, tighten
screw on flange clamp.
5. If fan does not turn freely,
replace pump.
6. Replace upper shell.
Fuel Lines
(Procedure for tightening
fuel lines)
1. Remove upper shell (see page
12).
2. Use an adjustable wrench as a
backup on 90
°
fittings.
3. Use 7/16" wrench and tighten
fuel lines at solenoid valve (see
Figure 12), pump, and pump
fuel filter assembly (see Figure
13).
Pump Pressure
Adjustment
1. Remove pressure gage plug
from fuel pump port marked
“GAGE.”
2. Install accessory pressure
gage (part no. 500-20914) to
fuel pump port marked
“GAGE” (see Figure 9).
3. Start heater (see Operation,
page 6). Allow motor to
reach full speed.
4. Adjust pressure. Use small
flat blade screwdriver to turn
slotted screw at fuel pump
port marked “PRESS ADJ.”
Turn screw clockwise to
increase pressure. Turn screw
counterclockwise to decrease
pressure. See specifications
at right for correct pressure
for each model.
5. Stop heater (see page 7).
6. Remove pressure gage.
Replace pressure gage plug
in fuel pump port marked
“GAGE.”
Figure 9 - Adjusting Pump Pressure
Figure 10 - Location of Screw
on Flange Clamp
Hex Screw On
Flange Clamp
Figure 11- Turning Fan with Hand
Fuel
Line
Solenoid
Valve
Burner Head
Pump
Pump
Fuel Filter
Assembly
Figure 12 - Fuel Line at
Solenoid Valve
Figure 13 - Fuel Lines at Pump and
Pump Fuel Filter Assembly
Fuel
Lines
Pump
Model
Pressure
CP350AK
100 PSI
Pressure
Gage
Fuel Pump Port
Marked “PRESS ADJ”
Fuel Pump Port
Marked “GAGE”
