Polycold Unit Performance Testing

M&T Unit Testing Software: Chart Recorder Display

M&T Systems provides state of the art computerized performance, and PFC cycle testing services.

This is a standard part of our in-house repair program. Each and every unit is quality verified by under going an extensive 4-6 hour testing process. All tests are conducted to OEM official standards, following the same criteria as was done when the unit was originally manufactured.

Custom in-house designed testing software continually charts the various temperature points of the unit. Test reports are generated in PDF format, which can be sent to the customer upon request.

The same method, and equipment that Polycold employs for simulating customer heat load conditions, is also used for all our unit heat load performance testing. We verify that the repaired unit will meet or exceed the maximum factory specified heat load, and do so with optimal cryocoil temperatures. When utilizing our testing services, you can be assured that your unit will once again perform like it did when it was brand new.

Test Facilities

Heat Load Controllers

Test Bay #3: Large Unit Testing Area

M&T Systems custom built radiant heat "load buckets" are utilized during the performance testing phase in order to characterize the unit's total heat load capability. Utilizing this method, we can simulate a heat load of up to 4,200 watts, although typically we would not exceed 3,600 watts for a normal 1100 HC test.

All of the Heat Load Controllers which we use, have been provided by Mytek Controls. This equipment has been factory calibrated against NIST standards, and has a known accuracy of +/- 4 watts of its set point.

Heat Load Simulation Diagram

To the left is a representation of a typical "load bucket" attached to a heat load controller. In this example, you can see the radiant heating elements suspended within a coil assembly, with an insulated area surrounding it. The coil sizing is normally that which is considered to be the maximum recommended volume for a given Polycold unit. And as can be seen in the photo above, "load buckets" come in various shapes and sizes to best accommodate the particular Polycold unit's test requirements.

Our test facilities are fully equipped to deal with all of the possible unit variations, as produced by Polycold Systems.