Manitowoc Indigo Series Technician's Handbook page 145

Water Regulating Valve
Problem (Freeze Cycle)
Valve not maintaining discharge pressure.
• Valve incorrectly set, dirty or defective. Adjust
valve to correct discharge pressure for your model
(refer to cycle times/24 hour productions charts),
clean or replace valve.
Discharge pressure extremely high; Liquid line
entering receiver feels hot.
• Water regulating valve incorrectly set or not
opening. Verify Head Pressure Control Valve
operation before changing water regulating valve.
Discharge pressure low, Liquid line entering
receiver feels warm to hot.
• Ice machine low on charge. Verify Total System
Refrigerant Charge page 224.
Part Number STH025 02/12 145