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that the value appearing on the LID is calibrated to the incoming power voltage reading. Voltage
can be calibrated only to between 90 and 100 percent of rated line voltage.
Perform an Automated Control Test
Check the safety controls status by performing an automated controls test. Access the
Control Test table and select the Automated Tests function (Table 7).
The Automated Control Test will check all outputs and inputs for function. It will also set the
refrigerant type. The compressor must be in the OFF mode in order to operate the controls test
and the 24-v input to the SMM must be in range (per line voltage percent on Status01 table).
The OFF mode is caused by pressing the STOP pushbutton on the LID. Each test will ask the
operator to confirm that the operation is occurring, and whether or not to continue. If an error
occurs, the operator has the choice to try to address the problem as the test is being done, or to
note the problem and proceed to the next test.
Note:
If during the Control Test the guide vanes do not open, check to see that the low pres-
sure alarm is not active. (This will cause the guide vanes to close.)
Note:
The oil pump test will not energize the oil pump if cooler pressure is below –5 psig
(–35 kPa).