Removal And Installation; Figure 22 - Bonnet/Function Module Removal - Danfoss Turbocor VTT Series Service Manual

3.2.3.1 Removal and
Installation
Figure 22 - Bonnet/Function
Module Removal
Compressor Components
ICM Body Removal:
1. Remove the IFV Actuator as described in the previous section.
2. Isolate the compressor and recover refrigerant.
3. Remove the four (4) hex bolts.
4. Rotate the Bonnet/Function Module as shown in Figure 22 (Bonnet/Function Module Removal).
5. Carefully pry the Bonnet/Function Module out of the ICM Body by using screw drivers between
the Bonnet/Funtion Module and ICM Body.
Pry up gently
ICM Body Installation:
1. Verify all contact surfaces are clean and dry. If not, clean with a lint-free cloth.
2. Remove any debris from the ICM body.
3. Install the new ICM Bonnet gasket. Refer to Figure 23 (Bonnet/Function Module O-ring
Placement) for this and all remaining steps within this installation section)).
4. Lubricate and install the ICM Adapter O-ring into the Bonnet/Function Module O-ring groove.
5. Install the Guide Ring into the Bonnet/Function Module groove.
6. Lubricate and install the two (2) lower Bonnet/Function Module O-rings into their respective
grooves.
7. Install the Bonnet/Function Module and install the four (4) hex bolts (finger-tighten only).
8. Torque the four (4) hex screws in a crisscross pattern in two (2) stages.
• Stage 1: Tighten to 50 Nm (37 ft.lb.)
• Stage 2: Tighten to a final torque of 100 Nm (74 ft.lb.)
9. Leak test the compressor to the appropriate pressure and industry standards.
10. Evacuate the compressor to the appropriate pressure and industry accepted standards.
11. Charge the compressor with refrigerant.
12. Restore power to the compressor.
For applications below freezing, the ICM adapter O-ring (Refer to #1 in Figure 23 (Bonnet/Function
Module O-Ring Replacement)) must be coated with Molykote G 4500 grease (supplied with ICAD
motor). The grease must also be applied in the O-ring groove on the adapter. The Molykote grease
ensures a good seal between the ICAD motor and the ICM adapter to prevent moisture from enter-
ing the ICAD magnets.
Rotate Bonnet/
Function Module
NOTE
M-SV-VT-001-EN Rev. A
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