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M-SV-001-EN Rev. G
Chapter 3.0 Compressor Removal and Installation
3.1 Refrigerant Containment
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
1. Isolate the Compressor power as described in the "1.8 Electrical Isolation" on page 19
section of this manual.
2. Remove the power cables.
3. Remove the ground wire from the ground post.
Figure 3-1 Compressor Power Cable Removal
4. Remove the Service Side Cover.
5. Disconnect the I/O cable from the Backplane I/O connector (J7) and remove the cable from the
compressor.
6. Once the transfer of refrigerant is complete, bring the compressor back to atmospheric
pressure according to industry standards using dry nitrogen.
7. 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.
8. Install the Service Side Cover.
9. Install the Mains Input Cover.
10. Position the lifting hoist/crane with the 2-point spreader bar directly above the lifting points.
11. Using a properly rated chain/cable, connect the spreader bar to the compressor lifting points.
12. Confirm that all lifting points are secured in accordance with relevant safety procedures and
standards.
13. Connect an appropriate lifting device to the eyebolts provided on each side of the compressor.
14. Remove the four (4) compressor mounting fasteners and associated hardware from the base of
the compressor.
15. Lift the compressor approximately 100 mm (4”). Confirm that the compressor and spreader bar
are properly balanced between the lifting points and the lifting hoist.
• • • 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 following cables:
TTS350 Major Rev. F shown
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