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OPERATION
Switch Board
Legend for illust. Z25501
(18)
Switch, cab ventilation blower. Blower runs with low
speed, even with switch in -0- position. (Cab pres-
surizing prevents ingress of dust).
(19)
Switch, mirror heating
(20)
Enable switch for hydraulic service arm operation.
Set this switch to ON position 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 (26) to OFF position.
(21)
Toggle switch, swing parking brake
0 - Parking brake released - UP
1 - Parking brake applied - DOWN.
The parking brake should only be applied with superstruc-
ture at complete standstill, except in case of emergency.
Refer to page 250 for more information.
(22)
Switch, manual actuation of swing ring gear pinion
lubrication system
(23)
Switch, manual actuation of central lubrication sys-
tem
(24)
Switch for upper and lower windshield wiper
0 - Off
1 - Interval stage
2 - Slow stage
3 - Fast stage
(25)
Switch, windshield washer
(26)
Key operated main switch
(27)
Acoustic warning signal
This signal sounds for approximately 1 second when
a fault message appears on the ECS screen.
In case of too low hydraulic oil level this signal sounds
continuously. Shut down the Shovel, locate and correct
the cause immediately. Fill up hydraulic oil to the correct
level. For the correct checking procedure → See "CHECKS
BEFORE STARTING THE ENGINES" on page 228.
CAUTION
CAUTION
3.3 OPERATOR'S CAB - CONTROLS
85
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