Chapter 3.0 Compressor Removal and Installation
3.1 Refrigerant Containment
• • • CAUTION • • •
Isolation and recovery of the refrigerant must be performed by a qualified service technician adhering to industry/ASHRAE standards.
Always wear proper safety equipment when handling refrigerants.
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.
5. Once the transfer of refrigerant is complete, bring the compressor back to atmospheric pressure
according to industry standards using dry nitrogen.
3.2 Compressor Removal
1. Isolate the Compressor power as described in Section 1.8 Electrical Isolation on page 22.
• • • CAUTION • • •
Ensure that there is no secondary power source connected to the compressor before disconnecting the following cables:
2. Remove the AC power cables from the Mains Input Bus bars.
3. Remove the ground wire from the ground post.
4. Remove the conduit from the Mains Plate.
Figure 3-1 Compressor Power Cable Removal
5. Remove the Service Side Cover. Refer to Section 4.1.3.1 Service Side Cover Removal and Installation on
6. Disconnect the I/O cable from the Backplane I/O connector (J7) and remove the cable from the
compressor.
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. Refer to Section 4.1.3.1 Service Side Cover Removal and Installation on
9. Install the top covers. Refer to Section 4.1 Compressor Covers on page 52.
10. Position the lifting hoist/crane with the 2-point spreader bar directly above the lifting points.
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Содержание Turbocor TT Series
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