The microKool portable chillers provide a Test Mode that tests displays and keys on the control panel, as well as inputs and outputs. The Test Mode also allows calibration of the supply and return line thermocouples.
System tests and calibration should be performed annually.
To enable Test Mode: |
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1 | Press |
| to shut down the chiller. | |||||||||||||||||
Stop | ||||||||||||||||||||
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2 | Disconnect and lock out main power to the unit, | |||||||||||||||||||
| then open the electrical enclosure. | |||||||||||||||||||
| Set dip switches 3 and |
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3 | 8 7 6 5 4 3 2 1 |
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| 5 to OFF. |
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4 | Set dip switch 6 to ON. |
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| Close the electrical enclosure and restore | |||||||||||||||||||
5 | ||||||||||||||||||||
| power to the unit. |
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◆The control displays “tSt.”
◆The Test Mode LED lights.
6 Press any button to display the first test menu.
Test mode provides the following menus:
●Key/Display Test
●Input Test
●Output Test
●Calibration
●Total Operating Hours
●Output Monitor Enable/Disable
7 After performing each test, hold the Setpoint 
for 3 seconds to index to the next test menu.
The procedure for each test is described on the following pages.
PERFORMING SYSTEM TESTS
IMPORTANT: All normal operating functions are disabled while Test Mode is enabled. To return to normal operation, you must disable Test Mode.
To disable Test Mode, repeat steps 2 through 5, setting dip switch 6 to OFF instead of ON.
UGH004/0999 | microKool Portable Chillers | MAINTENANCE |
