Vilter VSM 71-701, Руководство по эксплуатации и обслуживанию

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Service
D) Set the clearance between the gate rotor blade
and the shelf.
1. Place a piece of 0.003”-0.004” shim
stock between the gate rotor blade and
the shelf.
2. Measure the depth from the top of the
compressor case to the top of the thrust
bearing housing. This determines the
amount of shims needed for the correct
clearance.
3. Use factory installed shim pack (106)
and bearing housing cover (116) with-
out the O-ring (143). Check the clear-
ance between the entire gate rotor blade
and the shelf, rotate the gate rotor to find
the tightest spot. It should be between
0.003”-0.004”. Make adjustments, if
necessary. It is preferable to shim the
gate rotor blade looser rather than tighter
against the shelf.
Note: Replacement blades are precisely the
same dimensionally as blades installed
originally at factory: Therefore, the same
amount of shims will be required for replace-
ment blades.
E) After clearance has been set install a new O-
ring (143) on bearing housing cover, install
cover and tighten the bolts to the recom-
mended torque value.
F) Install side cover with a new gasket. Tighten
the bolts to the recommended torque value.
The unit can then be evacuated and leak
checked as outlined in section 0.03.