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Dayton Operating Instructions and Parts Manual
10
Dayton Portable
Oil-Fired Heaters
®
3E358B and 3E359B
PUMP PRESSURE ADJUSTMENT FOR
HEATERS WITH FUEL FILTER INTER-
NAL TO PUMP
1. Remove pressure gauge plug from
fuel pump port marked “GAUGE.”
2. Install accessory pressure gauge (part
number 110380-01) to fuel pump
port marked “GAUGE” (See Figure
20). Do not use bleeder valve port to
check pressure. Bleeder valve port
contains pressure higher than
operating pressure. Setting pump
pressure with gauge in bleeder valve
port will result in wrong operating
pressure.
3. Start heater (See Operation, page 5).
Allow motor to reach full speed.
4. Adjust pressure. Use small flat blade
screwdriver to turn slotted screw at
fuel pump port at top right side of
pump. Turn screw clockwise to
increase pressure. Turn screw
counterclockwise to decrease
pressure. See specifications below
for correct pressure for each model.
5. Stop heater (See To Stop Heater,
page 6).
6. Remove pressure gauge. Replace
pressure gauge plug in fuel pump
port marked “GAUGE.”
Part
Kit Number
Flame-Out Control HA3003
Spark Plug HA3012
MAINTENANCE KITS
psi
Pressure
Gauge
Pressure
Adjustment
Port
Fuel Pump
Port Marked
“GAUGE”
Pump
Model Pressure
Model 3E358B 100 psi
Model 3E359B 110 psi
Figure 20 - Adjusting Pump Pressure
PUMP PRESSURE ADJUSTMENT FOR
HEATERS WITH FUEL FILTER/CANIS-
TER EXTERNAL TO PUMP
1. Remove pressure gauge plug from
fuel pump port marked “GAUGE.”
2. Install accessory pressure gauge (part
number 110380-01) to fuel pump
port marked “GAUGE” (See Figure
21).
3. Start heater (See Operation, page 5).
Allow motor to reach full speed.
4. Adjust pressure. Use small flat blade
screwdriver to turn slotted screw at
fuel pump pressure adjusting port.
Turn screw clockwise to increase
pressure. Turn screw counterclock-
wise to decrease pressure. See
specifications, next column, for
correct pressure for each model.
5. Stop heater (See To Stop Heater,
page 6).
p
s
i
Fuel Pump
Pressure
Gauge
Fuel Pump Port
Marked “PRESS ADJ”
Fuel Pump Port
Marked “GAUGE”
Pump
Model Pressure
Model 3E358B 100 psi
Model 3E359B 110 psi
Figure 21 - Adjusting Pump Pressure
6. Remove pressure gauge. Replace
pressure gauge plug in fuel pump
port marked “GAUGE.”