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M-AP-001-EN Rev. N
Figure 20-4 - Correct
Compressor Mounting Pad
Installation
Installation
1. After releasing the pressure, remove the suction and discharge connection blanking
plates from the new compressor.
2. Attach the suction, discharge, and economizer (if applicable) connections. Solder all
joints according to approved practice ensuring that dry nitrogen is used at all times.
3. Ensure flange surfaces are clean and free from debris. Install new O-rings.
4. Attach the motor-cooling connection at the rear of the compressor. This connection is
a 1/2 inch O-ring face seal connection (see Figure 20-5).
5. Perform a leak test, evacuation and charge according to industry standards.
20.5 Piping Connections
• • • CAUTION • • •
Install new O-rings when attaching flanges to the compressor. O-rings must be of type EPDM (also known by the compound #
E0740-75 for R1234ze refrigerant). O-ring grease must be silicone-based and compatible with R1234ze.
• • • CAUTION • • •
The motor-cooling line should be channeled from the liquid line (see Figure 20-5).
The motor-cooling line requires the installation of a service valve (not included) to enable refrigerant isolation during compressor
servicing.
The compressor is shipped pressurized with Helium. Pressure should be relieved through the Schrader valves on the compressor
prior to removing the suction and discharge connection blanking plates (see Figure 20-5).
• • • CAUTION • • •
Ensure the discharge line is fitted with a non-return valve. During a surge condition or shutdown, the nonreturn valve prevents
reverse flow into the discharge port, which can cause damage to compressor components. Dry-fit the pipework to the valves and
verify the connections are aligned and there is no strain on the joints.
Summary of Contents for Turbocor TT Series
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