Structural Concepts Reveal NR3651RRSSV handleiding

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Structural Concepts

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Handleiding

TROUBLESHOOTING (BY TRAINED SERVICE PROVIDERS ONLY) - EVAPORATOR SYSTEM

CONDITION TROUBLESHOOTING

Low Suction

Pressure

Check if sight glass is flashing or showing low charge.

Check that expansion valve (TXV) isn’t restricted. Check element charge.

Check that liquid line or filter isn’t restricted. Check that refrigeration lines and/or

hoses are not kinked on either high or low sides.

Check that evaporator fan motors are working.

Check that superheat is between 6 °F to 8 °F.

Check that there is no air recirculation around evaporator coil.

Check that evaporator coil is not iced up.

High Suction

Pressure

Check for refrigerant overcharge.

Check that compressor reed valves aren’t bad. Look for high suction/low head

pressure. Perform pump down.

Check that the “cooling load” isn’t high. Product must be pre-chilled before placing in

refrigerated section of case.

Check that case is at least 15-feet from exterior doors, overhead HVAC vents or any

air curtain disruption.

Check that unit is not exposed to direct sunlight via windows or any other heat source

(ovens, fryers, etc.).

Check that superheat adjustment isn’t low.

Check TXV bulb installation

a. Poor thermal contact.

b. Warm location.

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