Manitowoc CVD1375 Especificaciones descargar pdf (Pagina 172)

–170–

Water Regulating Valve

Function

The water regulating valve maintains the freeze cycle

discharge pressure. The valve setting for the

CVD1476 condensing unit is 240 psig.

Check Procedure

1. Determine if the head pressure is high or low (refer

to “Operational Pressure Chart”.

2. Verify the condenser water meets specifications.

3. Adjust valve to increase or decrease discharge

pressure (if discharge pressure remains high refer

to “Headmaster Control Valve Diagnostics” before

replacing valve).

4. Determine the temperature of the liquid line

entering the receiver by feeling it. This line is

normally warm; “body temperature.”

5. Using the information gathered, refer to the list for

diagnosis.

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. Refer to “Refrigerant

Charge Verification.”

1 2 ... 167 168 169 170 171 172 173 174 175 176 177 ... 203 204

Sin comentarios

Manitowoc CVD1375 Especificaciones Pagina 172