7. Electronic Valve Tests - This mode is designed to allow the
user to quickly command the electronic valves to the fully
open or fully closed position in order to check the operation
of the valves. Use the T4 key to toggle the valve command
between open/close and then verify the XEV20D open/close
LED to see when the valve is fully opened/fully closed. A
solid orange light on the close LED indicates the valve has
completed driving closed. A solid orange light on the open
LED indicates the valve has completed driving open. Use the
T6 key to advance to the next valve. Once all valve testing is
complete, use the T8 key to advance to the next section of
tests.
8. Feedback Input Tests - This section allows the user to test
and verify the current monitoring sensors for the evaporator
fan and defrost heaters. For information on how to connect
and configure the current transducers, see Section 10.5.2.,
Fan Motor Current Monitoring and Section 10.3.5.7.,
Defrost Heater Current Monitoring. Use the T4 key to
activate the relay for the fan or defrost. The relay status and
the current value are displayed as well as the feedback value.
The feedback value is Active once the amperage value rises
above a programmed threshold. Use the T6 key to advance
to the next relay and the T8 key to advance to the next series
of tests.
9. Defrost Test - The final test is a defrost cycle test. Use the
T4 key to activate a defrost cycle. The controller will behave
as though an actual defrost cycle has been reached and will
drive all loads to the defrost state/position. The defrost cycle
is active once the changes to and the Defrost In
Progress message is displayed. Once the defrost cycle is
active, the system loads and valves can be verified for their
defrost state. Once all loads have been verified, the defrost
cycle can be terminated by toggling to inactive with the T4
key. Once the defrost verifications are complete, use the T8
key to advance to the end of the test.
10. End of Test - After the defrost test, the test mode sequence is
complete. The final action taken by the controller is driving
all electronic valves to the fully open position in order to
prepare the fixture for evacuation at the installation site.
Figure 14-24 - Pressure Inputs Tests Screen
Figure 14-25 - Electronic Valve Tests Screen
Figure 14-26 - Feedback Input Tests Screen
Figure 14-27 - Defrost Cycle Test Screen
To Next Page
Loading...
