Carrier 17/19EX User Manual
Page 162
When the test is finished, or the EXIT softkey is pressed, the test will be stopped and the
Control Test menu will be displayed. If a specific automated test procedure is not completed,
access the particular control test to test the function when ready. The Control Test menu is
described as follows.
Automated Tests
PSIO Thermistors
Options Thermistors
Transducers
Guide Vane Actuator
Pumps
Discrete Outputs
Pumpdown/Lockout
Terminate Lockout
As described above, a complete control test.
Check of all PSIO thermistors only.
Check of all options boards thermistors.
Check of all transducers.
Check of the guide vane operation.
Check operation of pump outputs, either all pumps can be activated, or indi-
vidual pumps. The test will also test the associated input such as flow or
pressure.
Activation of all on/off outputs or individually.
Pumpdown prevents the low refrigerant alarm during evacuation so refriger-
ant can be removed from the unit; locks the compressor off; and starts the
water pumps.
To charge refrigerant and enable the chiller to run after pumpdown lockout.