14 Product Manual PM WSC/WDC
Factory Performance Test
Fast and trouble free startup and operation.
All WSC and WDC chillers are factory tested on ARI certified microprocessor based test stands. The test stand
microprocessors interface with the chiller MicroTech controls, allowing monitoring of all aspects of the test
stand and chiller operation.
The test procedure starts with dehydration and evacuation of the refrigerant circuit and charging with refrigerant
and lubricant. This is followed by a run test at job conditions of flow and temperature. Compressors must meet
a stringent 0.14 in/sec vibration limit and the entire unit must pass a moisture limit of 30 ppm. The testing
ensures correct operation prior to shipment, and allows factory calibration of chiller operating controls.
Optional Certified Test
A McQuay engineer oversees the testing, certifies the accuracy of the computerized results, and translates the
test data onto an easy-to-read spreadsheet. The tests can be run at ARI load points between 10% and 100%
and are run to ARI tolerance of capacity and power. 50 Hz units are run tested at 60 Hz to their motor maximum
power.
Optional Witness Test
A McQuay engineer oversees the testing in the presence of the customer or their designate and translates the
test data onto an easy-to-read spread sheet. The tests can be run at ARI load points between 10% and 100%. It
takes two to three hours of test time per load point specified. Tests are run to ARI tolerances of capacity and
power. 50 Hz units are run tested at 60 Hz to their motor maximum power.
McQuayService Startup
All McQuay centrifugal chillers are commissioned by McQuayService personnel or by authorized McQuay
startup technicians. This procedure assures proper starting and checkout procedures and results in a trouble-
free initial startup.
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