Safety Mechanisms - Hitachi AW130 Handling Instructions Manual

3. Removing the high-pressure hose (Fig. 22)
(1) Loosen the ring.
(2) Remove the high-pressure hose from the
washer's water outlet.
(3) Drain all residual water from the high-
pressure hose.
4. Drain the water from the washer (Fig. 23)
(1) Tilt the washer to drain out the residual
water.
(2) Wipe away all moisture with a dry cloth.
CAUTION
Water left in the washer may freeze in the winter,
which could result in damage to the pump.

SAFETY MECHANISMS

The washer is equipped with the following safety mechanisms to ensure safe usage.
Power switch
This prevents the washer from being unintentionally operated.
Trigger gun equipped with a lock
This prevents the trigger from being pulled, unintentionally operating the washer.
Pressure switch
This prevents the pressure inside the washer from exceeding permissible levels. Releasing
the lever on the trigger gun causes the valve operated by water pressure to halt pump
operations, which allows the pressure to be released through the water feed. The pump is
started again when the lever is pulled.
Thermal protector
This protects the motor by halting operations when abnormal heat is detected in the motor.
It will start operating again when the motor cools down.
Loosen
Fig. 22
37
English
Water outlet
Ring
High-pressure
hose
Fig. 23