Goetti Air Conditioning Heat Pump manual V. Start-Up/Check-Outprocedures

COMPONENTS WITH SPECIAL FEATURES:

SCROLL COMPRESSOR:

Units equipped with scroll compressors do not have crankcase heaters and do not require hard start kits.

However, they do have a 3 minute anti-short cycle timer.

On three phase compressor, incorrect phase sequence will result in the compressor running backwards.

CAUTION:

Never use the scroll compressor to pump itself down (create a vacuum) by closingoff the suction line. The high vacuum caused by the unit pumping down could cause severe intemal fusite arcing resulting in a compressor failure.

Damage resultingfrom intemal fusite arcing due to extremely low pressure is apparent when an "in-warranty" compressor is disassembled and will result in denial of warranty claims, by the compressor manufacturer.

ANTI-SHORT CYCLE TIMER:

Two different types of anti-shortcycle timers may be used for compressor protection. They are described as follows:

°Model TA24A3 manufactured by SSAC.

FUNCTION - No delay on initial start up; but a momentary power failure will initiate a 3 minute delay before the compressor contactor can be re-energized. Also, a brownout control feature will prevent compressor start-up due to low line voltage.

°Anti-short cycle timer is inherent in the electronic controls of the defrost control board. The operation is similar to the above control -- no delay on initial start up; but a momentary power failure will initiate a 3 minute delay before the compressor contactor can be re-energized.

V. START-UP/CHECK-OUT PROCEDURES

PREUMINARY START-UP

1.If power to unit has been disconnected for any extended period of time, restore power twelve (12) hours prior to start-up procedure.

COOUNG CYCLE CHECK-OUT

1.With thermostat calling for cooling and set 10 ° below room temperature, engage disconnect switch(es) to start system.

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