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PIM00504
Chapter 10. TRIAL RUNNING
CAUTION
Ensure that the power can be shut off immediately in response to unforeseen events. Either
incorporate an emergency stop switch or similar device, or configure a sequence circuit for
the main machine for that purpose.
In the event of unanticipated operation, stop the unit and check safety before restarting the
operation.
Check that all the preparations for running have been completed by referring to “Chapter 5 PROCEDURE
FOR STARTING UP THE PRODUCT”.
(1) Powering on
Turn the switch on the control panel at the machine to “ON” to supply power to the
hydraulic product. This unit starts in about 3 seconds after powering up. Check
the following points:
A. That the display on the controller’s operation panel lights up
B. That the DC fan for the oil cooler is running
C. That the pressure indicated on the controller’s operation panel display rises after
the sound of the pump running
(2) Flushing
operation
When the starting check is completed, connect all the piping except for the
actuators in a loop, then flush for about two hours by passing hydraulic oil through
the return filter.
(3) Changing the
hydraulic oil
Turn the power off, drain all of the hydraulic oil in the tank out through the tank’s oil
drainage port, then pour in the stipulated volume of new hydraulic oil through the
oil filler port cum air breather. Check the return filter’s indicator, and if it is clogged,
change the filter element.
(4) Air bleeding
Thoroughly bleed air from inside the hydraulic circuit. If the air is not completely
bled out, cylinders and other actuators may operate abnormally, and there may be
abnormal noise from the pump, valves and so on.
CAUTION
When bleeding the air, oil at high pressure and high temperature may gush out, so care is
necessary.
