Table 2-1. Street Side Operator's Controls and Indicators - continued

TM 5-4210-224-14&P

Table 2-1. Street Side Operator's Controls and Indicators

250 GPM Mini-Pumper Firefighting Truck (Continued)

(Refer to Figure 2-1)

Key

Control or Indicator

Function

19.

Water Tank Level Gauge.

he Water Tank Level Gauge is used to measure the amount of water in

the water tank.

The gauge measures in increment readings of FULL, 3/4, 1/2, 1/4, and

REFILL.

The level is indicated by reading the level next to the highest illuminated

light.

20.

Heat Exchanger Control

The Heat Exchanger Control Switch

Switch.

operates the heat exchanger valve which supplies coolant water from

fire pump to engine and transmission.

To operate, turn switch lever to the left (counterclockwise).

Turn the switch to the right (clockwise) to close.

21.

Water Tank Drain Knob.

The Water Tank Drain Knob is used to drain the 250 gallon water tank.

Pull the knob all the way out to drain the water tank. Push the knob in to

close the drain.

2-9