Hale MG User Manual download pdf (Page 41)

Muscle Pumps

2-7

Pump To Road Shift Procedures

1. Verify that the operator’s hand throttle or

governor control has returned to idle speed.

2. Shift the truck transmission into the

NEUTRAL position, and wait four seconds.

Check to make sure the speedometer reads 0.

3. Moving pump shift control valve lever to the

ROAD position. The in-cab and panel pump

indicator lights should go out when the pump

transmission starts to shift into the ROAD

position.

REFER TO THE FIRE DEPARTMENT

PROCEDURES ON REMOVING WHEEL CHOCKS

AS WELL AS LAY OUT AND CONNECTION OF

SUCTION AND DISCHARGE HOSES.

Standard Relief Valve Procedures

These procedures are for setting the operating

point of the standard relief valve.

1. Increase the engine RPM to reach the desired

pump operating pressure while reading the

discharge pressure gauge.

2. Turn the hand wheel slowly counterclockwise

until the relief valve opens, the pilot light

comes on, and the master pressure gauge drops

a couple of PSI (BAR).

3. Turn the hand wheel slowly clockwise until the

master pressure gauge rises to the desired

pressure and pilot light goes out. The relief

valve will now operate at the set pressure.

4. When the pump is not in operation, turn the

hand wheel clockwise so that the control is set

slightly above the normal operating pressure.

When the pump is put into operation again,

reset the control valve to the desired operating

pressure.

TPM Relief Valve Procedures

These procedures cover the Hale TPM Relief

Valve System. Be sure to select the correct

procedure, according to relief valve.

TPM System (only)

1. Set the pressure indicator on the PMD control

valve to a position slightly above the normal

operating pressure (even before water starts to

flow).

2. After normal operating pressure has been

achieved (as indicated on the master pressure

gauge and with the pump discharging water),

slowly move the adjusting handwheel

counterclockwise until the relief valve opens,

the amber pilot light comes on, and the master

pressure gauge reading drops a couple of PSI

(BAR).

3. Turn the handwheel slowly clockwise until the

master pressure gauge reading is at the correct

operating pressure and the pilot light goes out.

The relief valve will operate at the set pressure.

THE INDICATOR ON THE PANEL IS ONLY

A ROUGH INDICATION OF TPM SETTING.

ALWAYS USE THE ABOVE PROCEDURE

TO PROPERLY SET THE TPM RELIEF

VALVE SYSTEM.

TPM System with Engine Governor

1. Set the pressure indicator on the PMD control

valve to a position slightly above the normal

operating pressure (even before water starts to

flow).

2. Power on the governor control.

3. Set the discharge pressure using the RPM

mode of the pressure governor control.

4. Move the TPM handwheel counterclockwise

until the relief valve opens and the amber pilot

light comes on.

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