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Page 26 XLT 020111
The purpose of this test is to evaluate whether or not your cooling unit is operating correctly by mea-
suring the temperatures of both the inside of the cellar and the exhaust side of the unit in the adjoin-
ing room. The majority of problems found with cooling units result from inadequate ventilation on the
exhaust (back) side of the unit; therefore, taking these measurements is critical in ensuring the optimal
performance of the product while minimizing costs of operation.
The WhisperKOOL unit is designed to maintain relative humidity between 50-70%, which is accom-
plished by cooling the cellar slowly. You should anticipate an approximate 10 - 15 degree temperature
dierential between the inlet air temperature and the outlet air temperature on the evaporator (front)
side of the unit
When testing the air temperature, please hold the thermometer in the appropriate location for a full
minute before recording temperatures so that the thermometer has stabilized. Do not use PDT Probe!
DO NOT EXCEED 24HRS ON BYPASS PLUG.
Note: Check air temperature, use a digital thermostat which can be purchased at any hardware
store under kitchen supplies.
Please refer to the images at the end of the document as a guide to where to measure the tempera-
ture of the inlet/outlet air:
FIRST TEMPERATURE TEST:
1. Stabilize the unit by turning it on and letting it run for ve minutes before performing the rst
temperature test.
2. Measure temperature of the inlet air going into the cooling unit on the evaporator (front) side.
3. Measure temperature of the outlet air discharging out of the cooling unit on the evaporator (front)
side by holding the thermometer at the outer edge of the circular fan.
4. Record information and calculate temperature dierential in table below for the evaporator (front)
side section under the rst test.
5. On the back side of the unit, measure temperature of the inlet air going into the cooling unit on
the condenser (back) side.
6. On the back side of the unit, measure temperature of the outlet air discharging out of the cooling
unit on the condenser (back) side by holding the thermometer at the outer edge of the circular
fan.
7. Record information and calculate temperature dierential in table below for the condenser/back
side section under the rst test.
SECOND TEMPERATURE TEST:
8. After the unit has run for 8 hours, perform the second temperature test.
9. Record information and calculate temperature dierential in table below for the condenser/back
side section under the second test.
TEMPERATURE DIFFERENTIAL TESTING