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Single pumpout control is standard on 07E condensing<br />

units. This method of control incorporates a liquid line solenoid<br />

valve and prevents refrigerant migration to the compressor<br />

by allowing the unit to shut off only after all<br />

refrigerant has been removed from the evaporator (compressor<br />

shuts off on low-pressure switch). Single pumpout<br />

07E WIRING SCHEMATIC<br />

control should not be used on direct-expansion cooler<br />

applications. For these applications, rewire as shown in the<br />

schematic wiring diagram. This provides minimum protection<br />

(stops compressor, closes liquid line solenoid valve, and<br />

energizes crankcase heaters simultaneously).<br />

FIELD CONNECTION WHEN APPLIED WITH DX COOLER<br />

21

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