Installation, Operation and Maintenance Manual
Page
59
of
100
7.17.1
Mounting the Flow Switch
1.
Install the switch so that the cover and interior are accessible.
2.
Mount the switch so that the flow of fluid is in the direction of the arrow on the switch casing.
3.
Use a pipe union on each side of the flow switch to allow easy removal or replacement.
4.
Mount the switch so that the pipe does not extend too far into the flow switch casing.
5.
Use pipe thread sealer on male threads only.
6.
Do not remove the cover gasket or the wire grommet from the conduit opening.
7.
Use only the terminal screws furnished. Using terminal screws other than those provided will void the
warranty and may damage the switch.
8.
To adjust the setting of the flow switch:
•
Disconnect electrical power source before making electrical connections.
•
Remove the flow switch cover.
•
Turn the adjusting screw clockwise to raise the flow rate. Turn the adjusting screw counterclockwise to
lower the flow rate.
•
Replace the cover after completing adjustments.
•
Tighten the cover screws.
DX Component Repair or Replacement
1.
Check refrigerant pressures as needed.
2.
Check super heat and sub cooling temperature.
3.
Check for refrigerant oil leaks. Repair as needed.
4.
Check thermal expansion valve (EEV or TXV), refrigerant distribution tubes, sight glass, filter drier and
other refrigerant components for leaks or damage. Repair as needed.
