Manitowoc S model Especificaciones descargar pdf (Pagina 170)

170 Part Number 80-1230-9 10/10

QF2300 Only

EQUALIZATION VALVE

GENERAL

The equalization valve is an electrically operated valve

that closes when energized, and opens when de-

energized.

NORMAL OPERATION

The valve is energized (closed) during the freeze cycle

and de-energized (open) during the off cycle. The

valve equalizes low and high side pressure during the

off cycle.

ANALYSIS

The valve can fail in two positions:

 Valve will not open in the off cycle.

 Valve remains open during the freeze cycle.

VALVE WILL NOT OPEN IN THE OFF CYCLE

Discharge and suction pressure will not equalize.

VALVE REMAINS OPEN IN THE FREEZE CYCLE:

Symptoms of a equalization valve remaining partially

open during the freeze cycle can be similar to

symptoms of an expansion valve or compressor

problem. Symptoms are dependent on the amount of

leakage in the freeze cycle.

A small amount of leakage will result in poor quality

ice. As the size of the leak increases ice quantity will

decrease until ice production stops completely.

A small amount of leakage will cause an audible

indication as the vapor passes through the valve. As

the size of the leak increases the audible indication

becomes more apparent.

Refer to the Parts Manual for proper valve application.

When replacement is necessary, use only “original”

Manitowoc replacement parts.

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Manitowoc S model Especificaciones Pagina 170