Daikin (A)5LLF, Руководство по обслуживанию

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Si50-203 Overhaul Instructions
Semi-Hermetic Single Screw Compressor Version III 27
6. Installing The Gate Rotor and Adjusting The Slit Clearance
(1) Install the O-rings on the lower bearing holder. (ZH_F : two O-rings)
(ZH_G : three O-rings (two kinds)···Confirm the installing position on spare parts list.)
(2) Set the screw rotor in the position indicated in Fig. 4-5, and engage the screw rotor with the
gate rotor.
(3) Apply oil on the O-rings of the lower bearing holder, and install the lower bearing holder in
the casing.
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After the lower bearing holder is inserted to the O-ring section, use the mounting bolt
holes to press the lower bearing holder into the casing.
(Use bolts that are 5 to 10 mm longer than the mounting bolts. Using the mounting bolts
may damage the threads since they are too short for this process.)
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Before the casing and the flange of the lower bearing holder contact, insert shims, and
tighten securely.
(4) Install the gate rotor bearing retainer plate.
(To prevent the gate rotor from rotating, hold the gate rotor by hand while tightening.)
(5) Measure the slit clearance (gap between the gate rotor and casing) with a clearance gauge.
With the clearance gauge hooked on the gate rotor, insert jig (4) into the screw bearing
retainer plate. Rotate the screw rotor, and insert the gauge in the slit.
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Standard value: 0.06 to 0.09 mm
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If the measured clearance deviates from the standard value, adjust the thickness of the
gate rotor adjusting shims.
(To increase the clearance, add shims.)
(6) Mount the O-ring on the bottom cover of the lower bearing holder, and install the bottom
cover of the lower bearing holder.
(7) Install the side cap.
Fig. 4-31 Adjusting slit clearance