Figure 1-25. Mobile Mode, Internal Power, Heat Mode, Thermostat Open, Full NBC

TM 10-5410-228-24

1.16 HYDRAULIC SYSTEM Continued.

1.16.17 Mobile Mode, Internal Power, Heat Mode, Thermostat Open, Full NBC.

When the thermostat opens, the heat mode is shut down. This is accomplished by de-energizing (opening)

solenoid valves SV5 and SV7. SV5 closes and SV7 opens. This diverts the flow of hydraulic fluid through

PD1 to the condenser fan motor, M1C, from the heating coil, HX-1A, returning it directly to the oil cooler,

HX-2. At this point the hydraulic system circuit is the same as "Vent Mode" (figure 1-10).

Valve

SV1

SV2

SV4

SV5

SV6

SV7

SV8

SV9

Energized State

OFF

Position

Open

Closed

Open

Closed

Figure 1-25. Mobile Mode, Internal Power, Heat Mode, Thermostat Open, Full NBC