Compressor Replacement; Removal - Emerson VILTER VSS Installation, Operation And Service Manual

Section 5 • Maintenance/Service

Compressor Replacement

Notify VilterTM prior to performing a compressor re-
placement. See Warranty instructions in Section 7.

Removal

To replace a compressor on a unit, proceed with the fol-
lowing steps:
NOTICE
Dispose of used oil in an appropriate manner following
all Local, State and Federal laws and ordinances.
1. Shut down and isolate the compressor unit, see
Compressor Unit Isolation for Maintenance and
Service procedure.
Note location of cables to aid in installation.
2. Disconnect all cables from sensors on compressor
and actuators.
3. Remove coupling guard, see Coupling Guard
Replacement procedure.
4. Remove drive coupling, see appropriate Drive
Coupling Replacement procedure.
5. Remove center member, see Drive Coupling
Removal procedure.
Use appropriate supporting equipment to support
and keep motor, C-flange and compressor leveled.
6. If equipped with C-flange, remove bolts securing
C-flange to compressor.
Figure 5-7. Compressor Replacement and Hardware Assembly (VSS 2401-3001 Shown)
VSS/VSR/VSM/VSH/VSSH Compressor • Installation, Operation and Service Manual • Emerson • 35391S
NOTE
NOTE
7. Using appropriate drain pan, drain oil by removing
drain plugs from under compressor housing and
discharge manifold. Allow oil to completely drain.
8. Remove all oil lines from the compressor.
9. Support suction line with appropriate supporting
equipment.
10. Remove nuts and bolts securing suction strainer/
check valve assembly to suction stop valve and
compressor.
11. Using appropriate lifting device, remove suction
strainer/check valve assembly from compressor.
12. Remove nuts and bolts securing discharge pipe to
compressor and oil separator, see Figure 5-7.
13. Remove discharge pipe and gaskets from compres-
sor and oil separator.
14. Remove nuts, flat washers, lock washers and studs
securing compressor to frame.
15. Remove any additional lines and/or components to
allow removal of compressor as required.
Refer to Bareshaft Compressor Lifting Points and
Weights portion in Section 3 for appropriate lifting
hole sizes, weights and lifting points.
16. Install appropriate lifting eyes on top of compres-
sor. See Table 3-1, 3-2, and Figure 3-1 to 3-6.
17. Using appropriate lifting device and additional per-
sonnel, remove compressor from frame.
Frame
NOTE
Compressor
Nut
Lock Washer
Flat Washer
Spherical
Shim
Washer
Assembly
Stud
Flat Washer
Lock Washer
Nut
5 – 11