PIM-00004
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[Operation Manual]
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DAIKIN INDUSTRIES, LTD.
[10. Test Run]
Supply hydraulic oil into the tank to the specified level, and conduct a test run after piping and electric wiring
are completed.
(Before turning ON the power supply, re-check if the ground cable and power supply cable are securely
connected.)
Turn ON the switch on the machine control panel.
[1] Check the pump operation sound, and confirm that a pressure indicated
on the display panel increases.
[2] Confirm that the oil cooler AC fan motor is running.
NOTE) This hydraulic unit takes a warm-up time of approx. three seconds
until it starts operation after power-ON.
(The pressure rising time varies depending on the pipe volume.)
Furthermore, the hydraulic unit takes a time to increase the circuit
pressure above the set pressure of the pressure switch. During this
period, the pressure switch signal may be output depending on the
pipe condition (pipe volume). In such a case, set up the master
machine so that it dose not receive the alarm output.
After completion of the start check, loop all pipes (except for the actuator),
and execute flushing operation for approx. two hours while running hydraulic
oil through the filter.
To conduct flushing operation, loop all pipes, and run the oil through a filter.
Before flushing operation, check all pipe connections for looseness and oil
leak.
After completion of the flushing operation, check the return filter indicator.
If the filter is clogged, replace the filter element, and drain all hydraulic oil
from the tank through the oil drain port of the tank.
Fill new hydraulic oil through the oil filling port (air breather) to the
specified level.
(Use new clean hydraulic oil with pollution degree of NAS Class 9 or lower
level.)
Evacuate air from the hydraulic circuit completely. If air is not completely
evacuated, the following phenomena may occur.
[1] Abnormal operation of cylinder actuator
[2] Abnormal sound of pump and valve
NOTE: Specifications of the return filter element are subjected to change.
When replacing the element, check the type of the return filter
incorporated in the unit, and order the specified type of element.
DANGER
When evacuating air, high-pressure and high-temperature oil may spout out. Pay attention to oil splash.
Start check
Flushing
Oil replacement
Air vent
