Altronic DE-2500 - Capacity Control Screens (Older Versions); Accessing and Interpreting Capacity Control Screens

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9.5 (continued)
There are up to eleven user programmable service messages. The desired messages and
service intervals are selected when programming the DE-2500 system. The service intervals
can only be changed by using the terminal program and the PC. The servicemeter alert can
be reset after the required service is performed by pressing the F2 key with the desired
message displayed. Each servicemeter message is individually reset.
9.6 FOLLOW THIS SECTION FOR DE-2500 UNITS PROGRAMMED FROM TERMINAL
VERSION 1.0 TO 1.8. FOR DE-2500 UNITS PROGRAMMED FROM TERMINAL VERSION
2.0 OR ABOVE, SEE SECTION 9.7. UNITS WITH SERIAL NUMBERS BELOW 1525 CAN
ONLY USE TERMINAL VERSION 1.8 OR LOWER.
From the RUNNING home screen, the CAPACITY CONTROL home screen is accessed by
pressing the NEXT key once. This home screen will display the current controller mode, AUTO
or MANUAL, and status of the capacity controller function, including hold position, loading and
unloading. Additionally, load inhibit or forced unload conditions caused by secondary control
inputs overriding the primary controller output are also displayed.
NEXT
press
twice
to view
CAPACITY: AUTO
HOLD POSITION 95%
CHAN 31 10.0 PSIA
SUCTION PRESSURE
Indicates that the current value of channel 31 which is the Primary control setpoint is within the
allowable deadband of the controller and no controller output change is being made at this time.
CAPACITY: AUTO
LOADING 96%
CHAN 31 11.0 PSIA
SUCTION PRESSURE
Indicates that the current value of channel 31 is above the desired setpoint by more than the
allowable deadband and the output of the controller is being changed to increase the load,
which will cause the suction pressure to decrease towards the setpoint.
CAPACITY: AUTO
UNLOADING 94%
CHAN 31 9.0 PSIA
SUCTION PRESSURE
Indicates that the current value of channel 31 is below the desired setpoint by more than the
allowable deadband and that the output of the controller is being changed to decrease the load
which will eventually cause the suction pressure to increase towards the setpoint.