2205B0JE-DA-J-N_2014.05.
5 Maintenance and Inspection
Screw Compressor J-series
5.4 Disassembly and Assembly of the Compressor
5-71
5.4.22.2 Precautions for Removal
Hexagon socket head cap screw (M20×50/M22×60)
1.
Before separating the suction cover from the main rotor casing, loosen the hexagon socket head
cap screws (No. 493: M20×50/M22×60).
Suction
adapter
1.
Using eyebolts (M8), remove the suction adapter.
FU
nut
The FU nut has a high friction locking device. Turn the FU nut with a locknut wrench until it is
loosened.
5.4.22.3 Precautions for Installation
FU
nut
The FU nut has a high friction locking device. Turn the FU nut with a locknut wrench when
tightening the FU nut.
Suction
adapter
1.
Install the suction adapter into the suction
cover so that the adapter plate stem
supporting the check valve stem orients in the
thrust direction.
Hexagon socket head cap screw (M20×50/M22×60)
1.
Apply liquid gasket to the suction adapter
tightening bolts. (This is to prevent water entry
and freezing. Silicon grease is allowable.)
2.
Install the bolts to the suction cover and
tighten them lightly with a wrench.
3.
After connecting the suction cover and the
main rotor casing securely, tighten the
hexagon socket head cap screws
(M20×50/M22×60) on the suction cover to the
specified torque.
