Komatsu WA800-3E0, Руководство по эксплуатации и техническому обслуживанию

Страница: 93 / 336

OPERATION
EXPLANATION OF COMPONENTS
3-31
PARKING BRAKE SWITCH
WARNING
Always apply the parking brake when leaving the machine or when parking it.
Even if the parking brake switch is turned ON, there is danger until the parking brake pilot lamp lights up,
so keep the brake pedal depressed.
NOTICE
q
Never use the parking brake switch to apply the brakes when traveling, except in an emergency. Apply
the parking brake only after the machine has stopped.
q
If the parking brake has been used as an emergency brake when traveling at high speed (near the max-
imum speed), contact your Komatsu distributor to have the parking brake checked for any abnormal-
ity.
Use this switch (20) to apply the parking brake.
Position (A): ON
The parking brake is applied, and the parking brake pilot lamp
lights up.
Position (B): OFF
The parking brake is released.
REMARK
If the directional selector switch is placed at F or R when the parking brake is still applied, the central warning lamp
flashes and the alarm buzzer sounds.
If the machine is left with the engine stopped but the parking brake switch is at the “OFF“ position, or if the starting
switch is at the “OFF“ position and the parking brake switch is set to the “OFF“ position, when the starting switch is
turned to the “ON“ position, the parking brake is applied even if the parking brake switch is at the “OFF“ position. If
this happens, after starting the engine, turn the parking brake switch to the “ON“ position, then to the “OFF“ posi-
tion to release the parking brake.
If the parking brake is still applied, the machine will not move off even if the directional selector switch is operated.
ENGINE LOW IDLING SELECTOR SWITCH
Use this switch (21) to switch the engine low idling speed
between two stages.
Press the push button to turn ON or OFF. If the switch is
pressed once, the pilot lamp lights up and the system is
switched ON. If it is pressed again, the pilot lamp goes out and
the system is switched OFF.
OFF: This sets the engine low idling speed to approx. 650 rpm.
This is used for normal operations at low idling, such as when
waiting for dump trucks.
ON: The engine low idling speed is set to approx. 850 rpm.
This is used on busy jobsites where it is necessary to reduce
the cycle time.