Motoman PX2750, Manual

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8.2 Daily Inspections
8-4
HW0480688
„ Air leakage
Check for excessive air leakage from the tubes, the couplings, and the joint fittings of the
motor on each axis when the air is supllied in the manipulator to form the explosion-proof bar-
rier.
The actual amount of air leakage is not important if a fault in the internal air pressure does not
occur. However, if internal air pressure faults occur frequently, check if the pressure of the air
source and the pressure setting of the pressure reducing valve are correct and if excessive air
is leaking.
„ Noise and vibration during operation
Check if the manipulator standby posture does not change when turning ON the power supply.
Also, check for abnormal noise or vibration during operation.
8.2.2
Pneumatic Unit
„ Drained water from air filter
Empty the water drained from the air filter on the pneumatic unit.
Where the automatic drainage system is provided, check the water level.
„ Pressure
Before moving the manipulator, check if the gauges of the pressure reducing valves on the
pneumatic unit show the pressure to be within the specified range.
8.2.3
Safety Devices
„
Emergency stop button and safety plug
Before operating the manipulator, check the following to make sure that the emergency stop
button and the safety plug operate correctly:
The manipulator stops immediately when the emergency stop button is pressed.
The manipulator stops immediately when the safety plug is pulled out.
Inspect the manipulator while it is in the standby posture and not in motion with the power sup-
ply turned ON. Repeated sudden stops while the manipulator is in motion will damage the
braking system.
Remove any paint on the emergency stop button and the safety plug.
Never enter inside the safeguards and the manipulator working envelope after turning ON
the power supply.
WARNING