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VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG
8. On air cooled oil coolers, the oil lines from the compressor must be connected to the air cooled oil cooler. Oil
cooler fans will need to be wired and checked for proper rotation. Refer to supplied GA drawing for connection
points and piping sizes.
9. The oil separator should be charged with oil to the Maximum NON-Operating Level.
10. The center member of the compressor is shipped loose to help facilitate fi nal fi eld alignment and allow for
motor rotation check.
11. Both the compressor and motor hubs should be checked for concentricity and perpendicularity.
12. The motor should be checked and shimmed for a soft foot prior to attempting fi nal alignment.
13. The motor should be checked to make sure that it is lubricated properly. Proper re-lubrication amounts/
types are provided on the motor’s lubrication plate. These instructions should be closely followed to achieve
optimum bearing life and to avoid consequential damage to the bearings and motor.
14. The center section of the coupling should be left out to allow the start-up technician to verify the fi nal
alignment and motor rotations.
15. Verify that all valves are in the open position.
16. Verfi y that the visual indicator on the Oil Temperature Control Valve (Oil Mixing Valve) position corresponds
with “% OPEN” on the control panel. CLOSE position is 0% OPEN, OPEN position is 100% OPEN.
17. A system load should be available at the time of start-up.
18. The unit should be pressure tested and purged with a dry gas. Care should be taken to not pressurize exces-
sively from the suction end of the compressor, as this will drive the compressor in a forward motion without
lubrication and may cause damage.
19. Have a qualifi ed electrician present to verify wiring during start-up.
20. Keep a hard copy of the fi nal set points in case the micro-controller gets corrupted or if they are required by
Vilter technicians for troubleshooting.
Section 3 • Installation