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VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG
Section 5 • Maintenance/Service
Figure 5-19. Gate Rotor Assembly and Tools
Figure 5-20. Gate Rotor and Shelf Clearance
Check for 0.003-0.004” (0.076- 0.102 mm) clearance between
gate rotor blade and partition.
23. Check the clearance between the entire gate rotor
blade and the shelf, rotate the gate rotor to fi nd the
tightest spot. It should be between 0.003-0.004“
(0.076-0.102 mm). Make adjustments, if neces-
sary. It is preferable to shim the gate rotor blade
looser rather than tighter against the shelf, see
Figure 5-20.
24. After clearance has been set install a new O-ring
(143) on bearing housing cover, install cover and
tighten the bolts to the recommended torque
value.
25. Install side cover with a new gasket. Tighten the
bolts to the recommended torque value. The unit
can then be evacuated and leak checked.