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M-SV-001-EN Rev. G
4.8 Interstage Pipe - TTH/TGH
The Interstage Pipe may be removed if it is damaged or if there is a refrigerant leak between the
mating surfaces.
Figure 4-37 Interstage Pipe
4.8.1 Interstage Pipe Removal and Installation
4.8.1.1 Interstage Pipe Removal
1. Isolate compressor power.
2. Isolate the compressor and recover the refrigerant according to industry standards. Refer to
"3.1 Refrigerant Containment" on page 41.
3. Disconnect the Interstage P/T Sensor harness.
4. Disconnect the pipe connected to the Economizer port.
5. Remove the four (4) M10x40 fasteners (2 per side) and remove the Interstage Pipe.
6. Remove the O-rings from the flanges.
Figure 4-38 Interstage Pipe Removal
4.8.1.2 Interstage Pipe Installation
1. Clean all mating surfaces.
2. Obtain two (2) new O-rings for the Interstage Pipe and lubricate them with O-lube.
3. Install the new O-rings into the grooves of the Housing Extension and the Second Stage
Suction Housing.
4. Carefully line up the Interstage Pipe and insert a fastener into each flange.
5. Install the remaining two (2) fasteners finger tight.
6. Torque all four (4) M10x40 fasteners evenly to 32 Nm (24 ft.lb.).
7. Connect the Economizer flange and torque the M10x30 fasteners to 32 Nm (24 ft.lb.).
8. Lubricate the new P/T Sensor O-ring and install into the Interstage Pipe. Torque to 10 Nm (7
ft.lb.).
9. Connect the Sensor Harness.
10. Leak test and evacuate compressor in accordance with standard industry practices.
O-ring
(2 places)
P/T Sensor
Interstage Pipe
Fastener,
M10x40
(4 places)
Economizer
Port
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