Danfoss Turbocor Twin-Turbine TTS Series User Manual

101 of 114M-AP-001-EN Rev. Q
Figure 20-4 Correct Compressor Mounting Pad Installation
In the event the mounting base is not used and the compressor is secured directly to the chiller, refer
to the fastener specifications in "Table 16-5 Mounting Base Screw Hole Specifications".
Table 16-5 Mounting Base Screw Hole Specifications
Fastner Thread Spec Thread Depth (mm) Recommended Torque (Nm)
M12 24 22
20.5 Piping Connections
• • • CAUTION • • •
Install new O-rings when attaching flanges to the compressor. OEM must make sure all sealing materials and equipment on the
unit are compatible with the appropriate refrigerant.
• • • CAUTION • • •
The motor-cooling line should be channeled from the liquid line (refer to "Figure 20-5 Motor-Cooling Connection and Access
Port" Figure 20-5).
The motor-cooling line requires the installation of a service valve (not included) to enable refrigerant isolation during
compressor servicing.
Compressors are pressurized with nitrogen to (15 psi). Pressure should be relieved through the Schrader valve, located next to
the motor cooling connection, prior to removing the blanking plates. Isolation and recovery of the refrigerant must be performed
by a qualified technician. Always wear proper safety equipment when handling refrigerants. (Refer to "Figure 20-5 Motor-Cooling
Connection and Access Port".)
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.
• • • CAUTION • • •
Ensure the discharge line is fitted with a non-return valve. During a surge condition or shutdown, the non-return 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.
4. Attach the motor-cooling connection at the rear of the compressor. This connection is a
1/2 inch O-ring face seal connection (refer to "Figure 20-5 Motor-Cooling Connection and
Access Port").
5. Perform a leak test, evacuation, and charge according to industry standards.
Spring
Washer
Screw
Compressor
Mounting Rail
Flat Washer
Nut
Rubber Mount
Base Frame

Danfoss Turbocor Twin-Turbine TTS Series Specifications

General

Brand	Danfoss
Model	Turbocor Twin-Turbine TTS Series
Category	Air Compressor
Language	English