Replacement Of Check Valve (2-Yearly) - Hitachi NEXT Series Service Manual

4.9 Replacement of Check Valve (2-Yearly)

Air-Cooled
Gasket (1)
Flow direction (arrow direction)
Water-Cooled
Flow direction (arrow direction)
1
① Discharge the compressed air in the procedure in
Gasket (2)
2
Check valve cover
(upper)
Remove the enclosure panels, such as front door (1)
Gasket
[Ref. No. 904], front panel [Ref. No. 906].
Check valve
Gasket
3
① Loosen and remove the bolts tightened to the check
Check valve cover
(lower)
② Remove the check valve cover, check valve, and
③ Be careful for installing direction of the check valve.
Check
valve cover
Gasket
4
Check valve
Suf ficiently clean the check valve and check valve
Gasket
cover and so on. Make sure that no rust particles and/
or fragmented gaskets are left on the valve and/or
gasket contacting surfaces.
Aftercooler
header
27
Depressurizing the System
page 20.
Removing the Enclosure Panels
Disassembly
valve cover (upper) for air-cooled.
(Check valve cover for water-cooled)
gasket.
Cleaning and Inspection