2205Q2JE-HO-S6-N_2020.01.
Chapter 5 Maintenance and Inspection
SCV-series Screw Compressor 5.4 Disassembly and Inspection
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5.4.10 Variable Vi Auxiliary Slide Valve and Unloader Slide Valve
Figure 5-13 Variable Vi Auxiliary Slide Valve, Unloader Slide Valve and Vi Adjusting Rod
5.4.10.1 Disassembly
a) Remove the hexagon head socket cap screws [454] fastening the lock washer [445] on the tip of the
suction cover side of Vi adjusting rod [444] and remove the spring washer [455] (following picture to
the left).
Note: The lock washer [445], spring washer [455] and hexagon head cap screws [454] are not used
on the products manufactured in and after 2003.
b) Turn the Vi adjusting rod in the bearing head counterclockwise until its end disengages from the
variable Vi auxiliary slide valve and then pull the rod out of the bearing head (following picture to the
right). Keep the thrust washer [449] together with the Vi adjusting rod.
c)
Return to the suction cover side. Pull the unloader slide valve and the variable Vi auxiliary slide
valve out of the main rotor casing by holding the unloader push rod.
Then hold the variable Vi auxiliary slide valve to pull out the unloader push rod and separate the
variable Vi auxiliary slide valve and unloader slide valve.
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