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– Bulletin 100-50-11.1
Bulletin 100-50-11.1 / 42020
© 2020 Parker Hannifin Corporation
Parker Hannifin Corporation
Sporlan Division
206 Lange Drive • Washington, MO 63090 USA
phone 636 239 1111 • fax 636 239 9130
www.sporlan.com
Appendix C: Sensor Installation
Mount the Pressure Transducer
1. Locate or install a ¼” SAE access fitting on the
suction line near the outlet of the evaporator.
Mount it at 12 o’clock on a free-draining horizontal
line to decrease the possibility of oil trapping.
WARNING:
Remove pressurized refrigerant from
the line before installing the fitting.
2. Install the transducer, tighten it to 8 ft-lbs, and
check for leaks. Do not use a gasket or a washer.
WARNING:
For safety, ensure that the correct
Schrader core is installed in the access fitting
and use caution when removing Schrader cap/
installing transducer to avoid contacting escaping
refrigerant.
3. Connect the pressure transducer cable to the
transducer.
4. Route and secure transducer cable away from hot
surfaces and high power A/C voltage lines.
5. Ensure pressure range and type (gauge or
absolute) are configured properly in the controller,
See Section 3 - SETUP.
6. After startup, use a gauge set to verify proper
pressure reading through the controller. An
improperly installed Schrader core can cause
erroneous pressure readings.
7. Check for leaks after system is in operation.
Mount the Suction Outlet Temperature Sensor
1. Per Appendix B - Wiring Diagram, the temperature
sensor should be installed 10-14 inches (25-36
cm) from the heat exchanger, on a free-draining
horizontal line. Minimize the distance from the
pressure transducer.
2. Use Scotch-Brite
™
to clean the copper line at the
installation location. Removal of the oxides and dirt
will increase sensor accuracy.
3. Fasten the suction temperature sensor as oriented
in Figure 2. Mount the sensor on the suction
line after the heat exchanger, near the pressure
transducer.
4. Route the cable away from hot surfaces and high
power A/C voltage lines.
5. Verify that the controller is configured properly for
the temperature sensor used (2K, 3K, or 10K), See
Section 3 - SETUP.
6. Wrap temperature sensor and copper tube with
foam insulation to minimize ambient temperature
effects (Figure 3).
Figure 1
Figure 2
Figure 3
