Operating instructions
56
• Disconnect the following elements:
- The cable from the compressor oil temperature
sensor. See Fig. 44 - “Compressor details”, item 4.
- The cable from the compressor bearing temperature
sensor - see Fig. 44, item 2.
- The cable from the motor temperature sensor
- see Fig. 44, item 1.
- The communication and connection cables between
the VFD control box and the interface box.
- The discharge temperature sensor cable.
- The compressor oil pressure sensor cable - see
Fig. 44, item 3.
- The compressor oil discharge pressure sensor
cable - see Fig. 44, item 5.
- The guide vane motor cable.
- The diffuser motor cable (for compressor 02XR5
and 02XR4 with separate diffuser (SRD) - see
Fig. 42 - “Unit rear/side view”, item 2.
- The diffuser pressure sensor cable (for compressor
02XR5 and 02XR4 with separate diffuser (SRD)
- see Fig. 44, item 8.
• Disconnect the oil recovery line connections - see Fig.
41 - “Detailed perspective view of the unit”, item 9.
• Plug all openings.
Disconnect the power wiring cables from the VFD
control box.
• Remove the screws mounting the compressor on the
evaporator support.
• Lift the compressor.
8.2.5 - Lifting the compressor
NOTE 1: The motor part of the compressor is heavy and
leans towards the rear, unless the following precautions
are taken:
• Use two wooden beams with a diameter of 100 to
150 mm of the same length as the compressor.
• Drill holes into these beams to attach them to the
compressor base, using the holes provided.
NOTE 2
• Each time the O-ring is replaced, use an O-ring
lubrifier.
• For all new O-rings, use a joint sealer.
• The heat exchangers must be lifted vertically. Lifting
must be done at the four corners of the tube sheets,
provided for this purpose.
See Fig. 44
1. Compressor suction elbow (screws removed)
2. Motor cooling line (cut)
3. Motor terminal box (screws removed)
4. Tube sheet
5. Tube sheet xing plate (screws removed - 4 places)
6. Motor cooling outlet line (screws removed)
7. Compressor xings (screws removed - 4 places)
8. Liquid line (screws removed)
9. Oil return line (screws removed)
10. Compressor discharge elbow (screws removed)
11. Condenser
12. Evaporator
13. Compressor