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PIM00504
13.3 Periodic Maintenance
CAUTION
Wear protective glasses and gloves for this work, and do it with the power OFF.
When using air blow, take care to avoid getting foreign matter in your eyes.
Note that oil will flow out from the piping during disassembly. Also, check that there is no
residual pressure in the piping before starting the work.
When the hydraulic oil in cylinders and piping is returned to the tank, the tank may overflow.
Rather than returning the hydraulic oil in cylinders to the tank, collect it in a separate oil
receiver.
Check that there is no abnormal noise, abnormal vibration, or abnormal heat generation from
this product.
Inspection
Location/Item
Inspection
Timing/Interval
Inspection Instructions
Hydraulic oil
•
Oil level check
•
Oil temperature
check
•
Oil hue check
•
As necessary
•
As necessary
•
Once every 6
months
•
Check if there is a sufficient volume of oil. Also check that
the hydraulic oil is not cloudy and does not include air
bubbles.
•
Check that the oil temperature is no higher than 60
°
C.
(Keep it within 15 to 50
°
C in normal use.)
•
Degradation of the hydraulic oil can be recognized based
on its color. If the hydraulic oil color changes toward brown
and reaches ASTM level L4: bright yellow, replace it.
* For the specifications of the hydraulic oil, refer to “3.1.2
Conditions of Use”.
Motor cooling fan
Motor unit
•
Once a month
•
Once a month
•
Check that the motor cooling fan is rotating and check for
dust accumulation.
•
Accumulation of a large amount of dust will lessen the
cooling effect, so it should be cleaned.
•
Check if the ambient temperature is too high.
Controller
•
Once a month
•
Check if the ambient temperature is too high.
Electric wiring
•
Once every 6
months
•
Check that there are no cracks or breaks in the sheathing
of the wiring.
•
Measure the insulation resistance, and check that it has not
dropped.
•
Check that the ground is properly grounded.
Gear pump
•
As necessary
•
In the event of an oil leak from the oil seal, the pump must
be replaced. Leaked oil will be expelled through the
motor’s oil grooves, so inspect for oil leakage.
Threads/piping
Hoses
•
As necessary
•
As necessary
•
Check that no threads or piping are loose or have oil leaks.
•
Check that there are no cracks or breaks, and that there is
no damage.
•
Take care not to get close to or come into contact with the motor cooling fan or other rotating parts
while the unit is running.
•
When touching the interior of the controller, abide by the following procedure to prevent electric
shocks.
