Manitowoc Ice STH003 manual

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

•High side access valve

•Low side access valve

IMPORTANT

This is a required in-warranty repair procedure.

1.Disconnect power to the ice machine.

2.Follow all manufacturers’ 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.

WARNING

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.

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.

NOTE: The pressure controls will operate normally once the tubing is re-rounded. Tubing may not re- round 100%.

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