Overhaul Instructions
Si50-203
28
Semi-Hermetic Single Screw Compressor Version III
7. Installing The Main Bearing Holder Fixing Plate, Assembling The Controller, and
Installing The Oil Filter
(1) Insert the slide valve into the casing.
1
In the right hole, insert the slide valve with "2" stamped on the end surface.
1
Make sure the slide valve operates smoothly.
(2) Mount the oil filter on the fixing plate. (except for ZH3F)
(3) Remove jig (2), then install the fixing plate. During this step, insert guide bolts in the main
bearing holder, and place the screw adjusting shims between the main bearing holder and
fixing plate.
(4) Insert the piston in the fixing plate
(In case of ZH_F)
(5) Place the cylinder cover. Extend the piston until it contacts the cylinder cover, then tighten
the four bolts around the cylinder. (After tightening bolts, make sure the piston moves
smoothly.)
Fig. 4-32 Adjusting piston and installing cylinder cover
(6) Tighten the other mounting bolts of the cylinder cover.
(In case of ZH_G)
(5), (6) place the cylinder cover. Extend the piston until it contacts the cylinder cover, then
tighten the bolts. (After tightening the bolts, make sure the piston moves smoothly.)
(7) Install the oil filter using jig (5). (for ZH3F only)
(8) Pull the slide valve forward, then hook the slide valve spring on the slide valve shaft.
(upward and downward units)
(9) Install the slide valve arm with the locking nut (slide valve) and bolt (piston).
Use a thread lock compound (Loctite etc.) on the bolt, and use a new locking nut.
8. Installing The Discharge End Cover (In case of ZH9F, Oil collector)
Insert the first demister (except ZH9F) in the cylinder cover, and install the discharge end
cover.
Since the discharge end cover is heavy, be sure to use guide bolts.
Summary of Contents for (A)5LLF
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