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M-SV-001-EN Rev.E
Compressor Components
1. Close the suction, discharge, and economizer
isolating valves as appropriate.
2. Close the motor-cooling liquid line shut-off
valve.
3. Use a magnet to manually open at least one of
the motor cooling solenoids.
4. Connect a refrigerant recovery system to the
compressor as per industry-standard procedures
and transfer the refrigerant to an appropriate
containment vessel.
3.2 Compressor -
Removal and Installation
1. Isolate the compressor power as described
in the “Electrical Isolation of the Compressor”
section of this manual.
2. Remove the Mains Input Cover.
3. Remove the AC mains cables from the
compressor terminals. Protect/isolate cable ends.
4. Remove the Mains Input ground wire from the
ground post.
5. Remove the cable gland that secures the Mains
Input cable conduit to the Mains Input bracket.
6. Remove the Service Side Cover.
7. Disconnect the I/O cable from the Backplane
I/O connector (J7) and remove the cable from the
compressor.
8. Reinstall the Service Side Cover.
9. Once the transfer of refrigerant is complete,
bring the compressor back to atmospheric
pressure according to industry standards using
dry nitrogen.
10. Disconnect the compressor from the
refrigerant system connections (suction,
discharge, economizer and motor cooling line),
taking care when removing connections that
there is no residual pressure.
11. Reinstall the Mains Input Cover.
12. Remove the four compressor mounting bolts
and associated hardware.
13. Connect an appropriate lifting device to
the eyebolts provided on each side of the
compressor, and remove compressor.
14. Using the blanking plates and bolts provided
with the new compressor, seal the compressor
and charge to 25 psi with inert gas for shipment
(this will prevent moisture and foreign material
from entering the compressor).
3.2 .1 Refrigerant
Containment
3.2.2 Compressor
- Removal
3.2.3 Compressor
- Installation
• • • CAUTION • • •
Isolation and recovery of the refrigerant must be performed by a qualified service technician adhering to industry/ASHRAE
standards.
• • • CAUTION • • •
Ensure that there is no secondary power source connected to the compressor before disconnecting the I/O cable.
NOTE
Blanking plates should not be removed from the new compressor until you are ready to place the new compressor in position.
New compressors are pressurized with inert gas to 50 psi. Pressure should be relieved through the Schrader valve, located next to
the motor cooling connection, prior to removing the blanking plates.
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