COMPRESSOR INSTALLATION & START-UP GUIDE
REVISION M
6
3.6.
Liquid Injection Solenoid Valve and Expansion Valve (Required, Not included with compressor):
The
liquid injection system may be piped, but it is necessary to consider the required space for adjustment of the
expansion valve while testing or running the compressor. Please refer to installation guide in the following
section for connection points.
3.7.
PTC Discharge Temperature Protection:
Each compressor comes standard with three PTC sensors in the
motor windings and one located at the discharge port. A motor module (INT69HBY) is installed in the electrical
terminal box. Refer to Figure 4-B showing the connection of motor and discharge PTCs in series to the motor
module corresponding terminal blocks.
4. Recommended Liquid Injection Piping
Note A: It is necessary to adjust the Ball Valve to feed small amounts of liquid (drops) to the
compressor motor.
