Refrigeration dryer Common Troubleshooting Guide

Refrigeration dryer Common Troubleshooting Guide

     1 Symptom : Dryer does not run

· Compressor line disconnected

• If the fuse blows

· Thermal relay

· High pressure switch action

· Compressor stall

· Line virtual connection or loose

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2 Symptom : Dryer stops shortly after starting

• Ambient temperature is too high

· Condenser clogged

· Compressor Overload

· Lack of refrigerant

Low pressure is too low

· Excessive intake

· Compressor stuck

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3 Symptom : The compressor does not start

· Incorrect wiring

· Low voltage

· Start capacitor damage

· Relay or contactor is not closed

• Start winding open

· Phase

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4 Symptom : The compressor overload due to start and stop the action and repeated

· Low voltage or phase imbalance

· Overload connected with other electrical equipment on

· Breaker failure

· Run capacitor is too small

· High discharge pressure

· Winding short circuit

· Thermal relay contact cement

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5 Symptom : Relay burn

· Voltage is too high or too low

· Run capacitor is incorrect

· Repeatedly start and stop ( see 2 and 3 )

· Relay specification does not match

· Incorrect mount

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6 Symptom : Capacitor burned

· Specification does not match

· Voltage is too high

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7 Symptom : high discharge pressure

· Excessive refrigerant

· Refrigeration system with air

· Dirty condenser

• Ambient temperature is too high

· Fan pressure switch is faulty

· Fan motor failure

· Fan rotation direction is incorrect

· Cooling water flow regulator valve failure

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8 Symptom : Exhaust pressure is too low

· Too little refrigerant

· Fan pressure switch failure