Airwell SWS 2652 HFС 134a [78/82] English

Page 77

English

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10 TROUBLESHOOTING

The table below lists the anomalies of operation of the unit, the relevant causes and the corrective measures.

For anomalies of any other type or not listed, contact one of Itelco-Industry ’s Service Centre for technical as-

sistance.

AAnnoommaallyy CCaauussee

The unit continues to work,

but without cooling.

Insufficient charge of refrigerant. Refill.

The dehydrating filter is clogged. Replace.

Ice on the suction line. Wrong calibration of overheating. Increase overheating.

Check the charge.

Excessive noise. Vibration of lines. Check the clamping brackets, if any.

Whistler emitted by the thermostatic

expansion valve.

Refill.

Check the dehydrating filter.

Noisy compressor. Seized bearings; replace the com-

pressor.

Check that the compressor’s locknuts

are tightened.

Low oil level

in the compressor.

One or more gas or oil leaks in the

circuit.

Identify and remove leaks.

Mechanical failure of the compres-

sor.

OOppeerraattiioonn

Request the intervention of a Ser-

vice Centre.

Anomaly of the oil heater of the

compressor’s base.

Check the electric circuit and the

resistor of the heater of the motor

base, and replace defective com-

ponents.

Manuale SWS-SWR EN.qxp 4-04-2007 15:05 Pagina 77