TM 9-4940-556-14&P
6.9.5 Remove four (4) bolts from fuel/solution tank mounting flange -
remove tank(s).
6.9.6 To re-install tank, reverse above procedure.
6.10 FUEL PUMP AND FITTINGS REMOVAL - REFER TO DRAWING JP7209-A
6.10.1 Drain fuel tank (see 6.9.2).
6.10.2 Disconnect three copper lines connected to fuel pump assembly
(from item(s) 1 and 5).
6.10.3 Remove solenoid coil from fuel valve (item 9).
6.10.4 Remove two bolts which hold fuel pump to mounting bracket.
6.10.5 Remove fittings (items 1 thru 10) as necessary.
6.11 FUEL PUMP (PRESSURE) ADJUSTMENT - REFER TO DRAWING JP7209-D
6.11.1 The outlet temperature of the unit is a function of inlet water
temperature and fuel pressure. The fuel pump used on this unit has two
settings which function independently.
6.11.2 Steam fuel pressure adjustment.
6.11.2.1 The fuel pressure adjustment screw (item 1) is located on the
side of the fuel pump. With the MODE switch in the STEAM position turn
the screw clockwise to increase the fuel pressure to the burner, counter
clockwise to decrease fuel pressure to burner. With 65F. inlet water,
a fuel pressure setting of approximately 260 psi (as read on panel gauge)
should heat outlet water to 350F.
6.11.2.2 CAUTION - MAKE FUEL ADJUSTMENTS SLOWLY TO AVOID OVERHEATING.
6.11.3 Pressure rinse fuel pressure adjustemnt.
6.11.3.1 With pressure tip in gun, MODE switch in PRESSURE position set
fuel pressure using screw on top of fuel pump (item 2). Turning the screw
clockwise will increase fuel pressure to the burner, turning the screw
counter clockwise will decrease fuel pressure to the burner. A fuel
pressure setting of 95 psi should, with incoming water of 65F. produces
an output temperature of 200F.
6.11.3.2 CAUTION - MAKE ADJUSTMENTS SLOWLY TO PREVENT UNIT FROM OVER
6.12 FUEL FILTER REMOVAL - (REF. DRAWING JP7209-A) . TURN MAIN POWER OFF.
6.12.1 Turn valve on top of fuel filter to OFF position (item 10).
6.12.2 Unscrew fuel filter, discard, install new fuel filter (item 10).
27
