2205B0JE-DA-J-N_2014.05.
5 Maintenance and Inspection
Screw Compressor J-series 5.4 Disassembly and Assembly of the Compressor
5-59
5.4.17.1 Common precautions for Removal/Installation
Suction cover
If the lifting equipment and lifting slings in use do not have sufficient loading
capacity, the suction cover may fall causing injuries and damage to the
compressor. Before starting the lifting work, always check that the lifting
equipment and lifting slings have sufficient loading capacity. Do not allow anyone
to be under the suction cover.
(Suction cover weight: 142 kg for 170J, 270kg for 220J, 280kg for 280J)
5.4.17.2 Precautions for Removal
Suction cover
1.
Using appropriate tools, remove the parallel pin.
2. Insert bolts into the service holes, tighten the bolts, and separate the suction cover and the main
rotor casing flange face evenly.
3. Pull out the suction cover being careful not to damage the push rod.
Before separating the suction cover from the main rotor casing, loosen the suction adapter fixing
bolts (M20×50 for 170J, M22×60 for 220J) on the suction cover.
When separating the suction cover from the main rotor casing, do not remove the suction cover
with the rotors.
If it is difficult to separate the suction cover from the main rotor casing, lift the main rotor casing
slightly using a crowbar while removing the suction cover.
5.4.17.3 Precautions for Installation
O-ring (P375/P450/P580)
1.
After disassembly, replace the existing O-rings with new ones.
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