Hitachi NEXT Series - Page 96

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9. MAINTENANCE [How to Service the Air Compressor]
① Depressurize the system described in 9.4 󱦱.
② Remove the front door (1).
③ Remove the control line filter element, and then use
an air nozzle to blow out the inside surface (reverse
flow action) of the control line filter element in order
to remove any dust particles.
④ Replace the element annually.
WARNING
During inspection of the operation of the air
relief valve, use the appropriate facial
protection. High pressure air containing dust
particles can cause severe injury.
Air relief valve
Air relief valve ring
Rear cover (3)
Rear cover (2)
Rear cover (1)
① Maintain the rated maximum discharge pressure (ex.
100 psi (0.69 MPa).
② Pull the ring connected to air relief valve.
③ Verify that the air relief valve operates properly and
get a hand off of the ring.
7
Operation Check of Air Relief Valve (Bi-Annually)
[Rearview]
8
Cleaning of Control Line Filter (Bi-Annually) [Fixed-Speed type]