Master MH-600T-KFA User's Manual & Operating Instructions page 10

Figure 11: Photocell
PHOTOCELL:
CLEAN PHOTOCELL ANNUALLY OR AS NEEDED.
- Remove upper shell.
- Remove fan (See fan blades on page 9).
- Remove photocell from its mounting bracket
- Clean photocell lens with cotton swab.
TO REPLACE: Remove side cover near Operation switch.
- Disconnect wires from Operation switch and remove photocell.
- Disconnect wires from circuit board and remove side cover.
- Install new photocell and attach wires to circuit board.
- Replace switch wires to operation switch and side cover.
- Replace fan and upper shell.
FUEL FILTER:
CLEAN TWICE PER HEATING SEASON OR AS NEEDED.
- Open rear shell.
- Remove filter cover by unscrewing four screws (see Figure 12).
- Remove fuel filter from filter cover.
- Wash fuel filter in clean kerosene.
- Replace fuel filter and filter cover.
Fuel filter A in fuel tank:
- Remove fuel cap (see Figure 13).
- Take out fuel filter from fuel tank.
- Wash fuel filter A with clean kerosene.
- Replace fuel filter in fuel tank.
- Replace fuel cap on fuel tank.
© 2014 Pinnacle Products International, Inc.
Maintenance (Continued)
Photocell
Figure 12: Removing Fuel Filter
Figure 13: Fuel Filter A in Tank
PUMP PRESSURE ADJUSTMENT:
- Remove rear shell.
- Remove fuel line A from fuel pump by using wrench.
- Replace pressure gauge at outlet of fuel pump.
- Adjust pump pressure by turning pressure adjustment screw
- Replace pressure gauge at outlet of fuel pump.
- Adjust pump pressure by turning pressure adjustment screw.
- Turn relief valve clockwise to increase pressure.
- Turn relief valve counterclockwise to decrease pressure.
- Set pump pressure to 128 PSI by turning screwdriver.
Pump pressure gauge is not supplied.
10
UNATTENDED WHILE BURN-
ING OR WHILE CONNECTED
Burner Assembly
Fuel Filter
Fuel Cover
Fuel Cap
Fuel Gasket
Fuel Filter A
Kerosene User's Manual
NEVER LEAVE HEATER
TO A POWER SOURCE