Manitowoc CVD1375 Especificaciones descargar pdf (Pagina 170)

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REFRIGERANT CHARGE VERIFICATION

QuietQube remote ice machines require the correct

amount of refrigerant (name plate charge) to operate

correctly at all ambient conditions.

An ice machine with an over or under charge of

refrigerant may function properly at higher ambient

temperatures and fails at lower ambient temperatures.

Symptoms of incorrect refrigerant are:

 Works during the day and then malfunctions at

night.

 Safety limit #2 in control board memory.

 Harvest cycle suction pressure is low.

When refrigerant charge is suspected, verify by

recovering the refrigerant, weighing and comparing to

the nameplate amount. Refer to Refrigerant Recovery/

Evacuation” for recovery procedures.

Undercharge Symptoms

 Safety limit #2 in control board memory.

 Harvest cycle suction pressure is low.

 Harvest cycle discharge pressure is low.

 Liquid line entering receiver feels warm to hot in the

freeze cycle.

 Depending on the amount of refrigerant loss, the ice

machine may harvest for one or two cycles when

restarted after an “Automatic Shut-off” (ice machine

pumped down and shut off on low pressure control).

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Manitowoc CVD1375 Especificaciones Pagina 170