Komatsu 06253 Operation & Maintenance Manual page 85

Hydraulic mining shovel
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OPERATION
Control Panel (continued)
Legend for illust. Z 23088
(20)
Enable switch for hydraulic service arm operation.
Set this switch to ON position"1" before lowering the
service arm. With this switch in ON position, the pilot
control system is made inoperative and the hydraulic
swing brake is applied. After completion of replen-
ishment procedure, swing back the service arm to its
home position and set switch (20) to OFF posi-
tion"0".
(21)
Switch for mirror heating
(22)
Toggle switch for swing parking brake
"0" Parking brake released - UP
"1" Parking brake applied - DOWN.
The parking brake must only be applied with superstruc-
ture at complete standstill, except in case of emergency.
Refer to page 186 for more information.
(23)
Switch for manual actuation of central lubrication
system
(24)
Switch for manual actuation of swing ring gear pinion
lubrication system
(25)
Switch for cab ventilation blower. Blower runs with
low speed, even with switch in"0" position. (Cab
pressurizing prevents ingress of dust).
(26)
Strike button for emergency shut down of the engine
and pilot control system cut out.
In case of emergency push in this button to stop the Die-
sel engine and to cut out the pilot control circuit.
DO NOT use for normal stopping procedure.
For releasing the switch, turn and pull-up the strike
button.
(27)
Rotary switch for starting the engine
(28)
Rotary switch for start pilot (cold starting aid)
(29)
Rotary switch for stopping the engine
(30)
Key operated main switch
CAUTION
WARNING
3.3 OPERATOR'S CAB - CONTROLS
85

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