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REPLACING PRESSURE CONTROLS WITHOUT
REMOVING REFRIGERANT CHARGE
This procedure reduces repair time and cost. Use it
when any of the following components require
replacement, and the refrigeration system is
operational and leak-free.
Fan cycle control
High pressure cut-out control
Low pressure cut-out control
High side condensing unit access valve
Low side condensing unit access valve
Water regulating valve
1. Disconnect power to the ice machine.
2. Follow all manufacturer’s instructions supplied with
the pinch-off tool. Position the pinch-off tool around
the tubing as far from the pressure control as
feasible. (See the figure on next page.) Clamp
down on the tubing until the pinch-off is complete.
3. Cut the tubing of the defective component with a
small tubing cutter.
4. Solder the replacement component in place. Allow
the solder joint to cool.
5. Remove the pinch-off tool.
6. Re-round the tubing. Position the flattened tubing in
the proper hole in the pinch-off tool. Tighten the
wing nuts until the block is tight and the tubing is
rounded.
Do not unsolder a defective component. Cut it out of
the system. Do not remove the pinch-off tool until the
new component is securely in place.
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