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Section 5: OPERATION Page 29
OM-ZR-May15
Starting and Warming Engine
Before starting the engine, read the Caterpillar Operation & Maintenance Manual carefully. Follow the engine
starting, operating, and maintenance procedures in the Caterpillar Manual
!WARNING – Safety!
Operation with hydraulic oil below 0°F (-18°C) may result in damage to hydraulic
components. In these conditions, it is recommended that provision be made to
keep the power unit warm or to run it continuously.
1. Turn the ENGINE POWER (OFF-ON-START) switch to ON.
2. Turn the MAIN CIRCUIT (REV-OFF-FOR) and the AUXILIARY CIRCUIT (REV-OFF-FOR) on the control pan-
el and pendant to the OFF position.
3. Turn the CLAMP (OPEN-CLOSE) switch on the control panel and pendant to the center (neutral) position.
5. Turn the ENGINE POWER switch to START. There is one second delay before the engine will crank. If
engine fails to start after thirty seconds of cranking, allow starter to cool for two minutes before
attempting to start again.
6. As the engine starts, release the ENGINE POWER switch. It will return to the ON position, providing
power to the controls.
!WARNING – Equipment!
Vibrator or the rotary head could start or clamp could close due to component
malfunction.
Changing Engine Speed
To increase engine speed, turn the Engine Speed (SLOW-FAST) switch to FAST. Engine rpm will increase.
To decrease engine speed, turn the Engine Speed (SLOW-FAST) switch to SLOW. Engine rpm will decrease.
Full-speed operation
The equipment should not be operated at full speed if hydraulic oil temperature is below 75
o
F (24
o
C). (HYD. OIL
TEMP. LOW light on control power is on)
!WARNING – Equipment!
Full-Speed operation with hydraulic oil below 75°F (24°C) may result in damage to
hydraulic components.