2205B0JE-DA-J-N_2014.05.
5 Maintenance and Inspection
Screw Compressor J-series 5.4 Disassembly and Assembly of the Compressor
5-49
5.4.14.1 Common Precautions for Removal/Installation
Balance piston cover
The balance piston cover may fall causing injuries or damage to the compressor.
Before starting the removing work, always attach stud bolts (M12×75) for safety.
(Balance piston cover weight: 17 kg for 170J, 33 kg for 220J, 48 kg for 280J)
5.4.14.2 Precautions for Removal
Balance piston cover
1.
Remove the two upper hexagon socket head cap
screws (M12×50/M16×60/M20×70) and attach
safety bolts.
2. Use the slide hammer and remove the parallel
pin.
3. After pulling out the parallel pin, loosen the rest of
the hexagon socket head cap screws and
remove the balance piston cover.
Suction cover partition plate
1.
Using eyebolts (M8), remove the suction cover partition plate.
5.4.14.3 Precautions for Installation
O-ring
1.
Make sure that all necessary O-rings are attached.
Back-up ring for O-ring
1.
Attach the back-up rings to the suction cover
partition plate while paying appropriate attention
to the direction of the bias cut surface. Ensure
that the joint of backup ring mates, and the O-ring
fits between the two back-up rings.
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