Model 30000-S DHPU Manual
Rev. 0
JRK
17SEP12
Page 15
The engine is equipped with a spring starter. Review the complete starter instructions
found in the engine section. In brief, to start the power unit:
Put the standby/work ball valve in the standby position.
Wind the crank handle in a clockwise direction until white or red springs are visible
through the inspection window (white = warm engine, red = cold engine).
Pull the trip lever to start the engine.
Repeat the above steps if the engine does not start. Pull the reset knob before turning
the crank handle. It could take 3 attempts to get the engine started.
Turn the standby/work ball valve to the work position.
Figure 8: Spring Starter
Observe the engine speed, oil temperature and oil pressure gauges. The engine speed will be
approximately 1400 RPM when the unit is in idle mode and 2100 RPM otherwise. Consult
the engine manual for acceptable ranges for the oil temperature and pressure.
Observe the oil pressure gauges. The system pressure gauge (located on the control panel)
will show a low value when the hydraulic oil is circulating directly back to tank. Higher
pressure readings will only occur when the tong is operated. Check the pressure gauge on
the return filter assembly at start up. As the filter collects more debris, then the pressure
drop across the filter increases. If the indicator on the pressure gauge is in the red area, then
the return filter element needs replacement.
