9. MAINTENANCE [How to Service the Air Compressor]
89
１
Depressurizing the System
Depressurize the compressed air in the air compressor
as described in 9.4
2
.
2
Removing the Enclosure Panels
① Remove the front door and enclosure panels.
② Remove cooler ducts such as duct plate (1) and duct
plate (4).
3
Disassembly
① Remove the fastening bolts of the check valve cover.
② Remove the upper check valve cover for Air-Cooled
(check valve cover for Water-Cooled), gasket, check
valve, and gasket in this order.
③ Be careful of the mounting direction of the check
valve.
4
Cleaning and Inspection
① Clean the check valve mounting surfaces on the
upper and lower check valve covers so that the
surfaces are free from rust and fragmented gasket.
② Clean the check valve mounting surfaces on the
check valve cover and cooler header so that the
surfaces are free from rust and fragmented gasket.
Check valve
cover
Gasket
Gasket
Check valve
Cooler header
Flow direction
(direction of arrow)
Check valve assembly
Duct plate (1)
Partition
plate (A)
Partition plate (B)
Duct plate (4)
Upper check valve cover
Lower check
valve cover
Flow
direction
(direction
of arrow)
2 stage
packing (1)
Gasket
Check
valve
Gasket
Air-Cooled
Air-Cooled
Air-Cooled
Water-Cooled
11
Replacement of Check Valve (2-Yearly)
Air-Cooled
Water-Cooled
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