Instruction manual

Maximum Series Portable Chiller : Air & Water-Cooled : M1 Series Instrument
Page: 26
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: [phone]
Service Department Fax: [phone]
Email: [e-mail]
B. PROPER ROTATION (PHASING) OF SCROLL COMPRESSORS
& PUMPS & FANS
1. Correct compressor, fan (on air-cooled units) and pump
rotation is critical for unit performance and to avoid severe
damage to the compressor.
2. All portable chiller compressors and pumps will be set to
rotate in the same direction during the testing process at the
factory.
3. After electrical installation the rotation must be checked by
observing the pump motor shaft on the end of the pump and
comparing its rotation to the directional arrow on the motor.
If the rotation needs to be changed it should be done at the
main power entry by switching any two power conductors
at the terminal block or customer supplied main power
disconnect. Recheck rotation before operating the units.
4. Caution must be taken when checking rotation to avoid
electrical shock.
5. A scroll compressor may make a loud rattling noise when
rotating in the wrong direction.
6. Operating the scroll compressor in the wrong direction will
causetheunittotriponit’sinternaltemperaturelimitand
may cause unit damage. When the temperature limit trips,
the compressor must be allowed to cool before it will restart.
This many take substantial time.
Pump electric motor and compressors located on typical water-cooled unit.
Pump’sElectricMotor
Compressor
Figure 3.2C