TM-9-2320-328-13-P-1

HEMTT-BASED WATER TENDER (HEWATT)

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST); PART 1 OF 3

MARCH 2009

TM-9-2320-328-13-P-1 - Page 156 of 1318

TM 9-2320-328-13&P-1

0017-26

DRAFT

0017

(14)

Mode Selection.

The mode button allows the user to toggle between pressure mode and

manual mode.

In pressure mode, the controller ECU receives feedback from the intake and

discharge transducers and adjusts the pump displacement solenoid to match the desired

pressure inputted by the user.

In manual mode, the controller ECU adjusts the pump

displacement solenoid with feedback from the system only when available.

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VENDOR ART

Figure 26.

The Home Screen Once the Mode Button Is Pushed To Go Into Pressure Mode.

VENDOR ART

Figure 27.

The Home Screen Once the User Presses the OK Button Within 3 Seconds

To Go To Pressure Mode.

ENGINE TEMP

PRESET:

XXXPSI

ENGINE RPM

IDLE

OK TO GO TO

PRESSURE MODE?

PUMP ENGAGED

PUMP DISCHARGE

FUEL

LEVEL

INC

VOLT

DEC

THROTTLE READY

ENGINE OIL PSI

MODE:

PRESSURE

PUMP INTAKE

ENGINE TEMP

PRESET:

XXXPSI

ENGINE RPM

IDLE

HYDRAULIC OIL

TEMP

PUMP ENGAGED

THROTTLE READY

ENGINE OIL PSI

MODE:

PRESSURE

PUMP INTAKE

PUMP DISCHARGE

FUEL

LEVEL

INC

VOLT

DEC