Pump Pressure Adjustment; Nozzle - Master BH150CE Owner's Manual

Pump Pressure
Adjustment
1. Remove pressure gauge
plug from filter end cover.
2. Install accessory pressure
gauge (part number
HA1180).
3. Start heater (see Operation,
page 7). Allow motor to
reach full speed.
4. Adjust pressure. Turn relief
valve to right to increase
pressure. Turn relief valve
to left to decrease pressure.
Set pump pressure at 4.9
psi.
5. Remove pressure gauge.
Replace pressure gauge
plug in filter end cover.

Nozzle

1. Remove upper shell (see
page 10).
2. Remove fan (see page 14).
3. Remove spark plug wire
from spark plug.
4. Remove spark plug from
burner head using 13/16"
open-end wrench.
5. Loosen flare nut using
3/4" open-end wrench.
Push fuel tube down.
6. Remove air line hose from
burner head.
7. Remove three screws
using 5/16" nut-driver and
remove burner head from
combustion chamber.
8. Place burner head into vise
and lightly tighten.
9. Carefully remove nozzle
from burner head using
5/8" socket wrench (see
Figure 13).
10. Blow compressed air thru
face of nozzle. This will
free any dirt in nozzle area.
11. Inspect nozzle seal for
damage.
12
Pressure
Gauge
Plug
Figure 10 - Pressure Gauge Plug Removal
Pressure
Gauge
Figure 11 - Adjusting Pump Pressure
Combustion
Chamber
Screw
Air Line Hose
Figure 12 - Removing Burner Head
Relief
Valve
Spark Plug
Wire
Burner Head
Spark
Plug
Flare Nut
Fuel Tube
101487