35 of 132
M-SV-001-EN Rev.E
Compressor Components
1.Inspect the compressor to ensure all
connections and fasteners are correctly installed.
2. Relieve the inert gas pressure through the
motor cooling Schrader valve.
3. Remove the suction, discharge and economizer
(if applicable) blanking plates from the new
compressor.
4. Remove the motor cooling inlet adapter cap.
See Section 3.2.3.1 (Compressor Replacement
Considerations for Motor Cooling Adapter).
5. Mount the compressor in position and install
the rubber mounts and hardware.
6. Attach all refrigerant line connections to the
compressor using the new O-rings supplied with
the compressor.
7. Tighten the economizer flange bolts (if
applicable).
8. Tighten the discharge flange bolts.
9. Tighten the motor cooling line connection.
10. Tighten the suction flange bolts.
11. Remove the Service Side Cover.
12. Connect the compressor I/O cable to the
Backplane.
13. Remove the Mains Input Cover.
14. Connect the cable gland that secures the
Mains Input cable conduit to the Mains Input
bracket.
15. Install the Mains Input ground wire to the
ground post.
16. Attach the AC mains cables to the terminals.
17. Re-install the Mains Input Cover.
18. Leak test the compressor to appropriate
pressure and industry accepted standards.
19. Evacuate compressor to appropriate pressure
and industry accepted standards.
20. Charge the compressor with refrigerant.
21. Apply power to the compressor.
To minimize refrigerant leak potential, the Motor
Cooling Adapter NPT-to-flare connection has
been replaced by a fitting incorporating all
O-ring seals for all Major Revision “E” and later
compressors. See Section 2.2 (Motor and Power
Cooling).
The housing connection seal is now an ISO
standard O-ring seal and the external pipework
connection is an O-ring face seal (ORFS). In
addition, the line size has been standardized at
1/2 inch for all models and the fitting includes an
in built (removable) strainer. This will require a
modification of the previous standard connection
size of TT300 compressors (from 3/8 inch).
The new fitting consists of 1) body (including
both O-rings), 2) strainer, 3) blanking disc, 4) 1/2”
braze sleeve, steel (all for connecting 1/2 inch
copper tube) and 5) nut. Body to housing thread
is M16 x 1.5.
Tube connection thread is 13/16-16 UN-2A.
Strainer recess is Ø 9.5. See Figure 24 (Major
Revision “E” Compressor Fittings).
3.2.3.1 Compressor
Replacement
Considerations for Motor
Cooling Adapter
NOTE
Install new O-rings when attaching flanges to the compressor.
• • • DANGER • • •
Ensure that electrical power is isolated from the AC mains cables before handling them.
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