Water Regulating Valve; Valve Not Maintaining Discharge Pressure - Manitowoc SD0302A Technician's Handbook
S series;
s300 series;
s420 series;
s450 series;
s500 series;
s850 series;
s1000 series;
s1200 series;
s1400w series;
s1400a series;
s1400n series;
s1800w series;
s1800a series;
s1800n series
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Also See for SD0302A:
- Technician's handbook (301 pages) ,
- Service manual (168 pages) ,
- Installation, use & care manual (68 pages)
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Water Regulating Valve
Problem (Freeze Cycle)
Valve not maintaining discharge pressure.
•
Valve incorrectly set, dirty or defective. Adjust
valve to 240 psig, 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 187.
Part Number 80-1479-3 7/10
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Troubleshooting
