ELGi EN 30X-100, Инструкция по эксплуатации, техническому обслуживанию и запасным частям

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6.8
Maintenance

6.1.6 Minimum pressure valve
Pre work
 Switch off the compressor and disconnect power supply
to the compressor.
 Close the discharge end ball valve.
 Release air oil tank pressure and allow the tank to cool
for a few minutes.
 Release the receiver tank and downstream pressure.
Requirements
 New MPV kit, allen key, grease.
Maintenance
MPV replacement (for 30 & 37kW)
Dismantling
 Isolate MPV from air-oil tank to MPV flange assembly
and MPV to cooler flange assembly
 Remove plastic plug (1) and pull out round-headed pin
(2).
 Unscrew and remove threaded ring (3) and remove
washer (9).
 Take out spring (4) and circlip (10).
 Remove piston (5), check valve (7),spring (6) and O-
ring (11).
Cleaning and Lubrication
 Clean the piston work-surface and sealing seat with a
liquid cleaner.
 Grease the threads, piston work-surface and check
valve work-surfaces with autoltop 2000 (supplied in
service Kit).
 Take care not to damage the seat and sealing surfaces
MPV replacement
Reassembly
 Put O-ring (11) into lower housing groove. Place check
valve (7) with spring (6) centrally onto valve seat in
housing (8).
 Insert piston (5), circlip (10) and spring (4). Lay washer
(9) on spring (4) as shown in drawing.
 Screw in threaded ring (3) to its original position and
secure it with round headed pin(2). Insert plastic plug
(1).
Extreme caution should be taken while removing the cap
or cover from the body because of the spring.