Overhaul Instructions
Si50-203
12
Semi-Hermetic Single Screw Compressor Version III
3. Inspection of The Gate Rotor and Surrounding Parts
(1) Checking the slit clearance
Measure the slit clearance by referring to Section 3.2.3) "Inspecting The Gate Rotor."
(2) Measuring the backlash
Measure the backlash of the gate rotor and screw rotor. If the measured value exceed the
standard value, replace the gate rotor.
[Standard value] 0.15 mm or less for all teeth (ZH3, 5) and 0.20mm or less for all teeth
(ZH7, 9)
Fig. 4-4 Measurement of gate rotor backlash
4.
Disassembling The Gate Rotor and Surrounding Parts
(1) Positioning the screw rotor
Position the screw rotor so that the gate rotor can be removed
without damage.
(2) Removing the gate rotor partition lid
In the ZH3F, the gate rotor partition lid is mounted together
with the lower bearing holder.
Fig. 4-5 Screw rotor position
Fig. 4-6 Cross sectional diagram of gate rotor
Summary of Contents for (A)5LLF
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