4–33
T-372
Cd50 QUEST Enable /
Disable
”OFF” = disabled.
”On” = enabled.
”SEtPt” = suspended by setpoint too low.
”CAHUM” = suspended by CA or humidity control.
”ACt” = suspended by ACT active.
”FAIL” = all return temperature probe failure for QUEST.
”PrtrP” = pre-trip active.
”C LIM” = suspended by cool limit logic.
”PULL” = pulldown active.
“ALArM ” = suspended by shutdown alarm
Press the ENTER key, Arrow keys, and then ENTER key to select “OFF” or “On”.
If “On” is selected, QUEST operation may be suspended as indicated by one of
the suspension codes listed above. If QUEST is not “OFF” and is not suspended,
“On” will be displayed.
Cd51 Automatic Cold
Treatment (ACT) Mode
Parameter Selection
Automatic Cold Treatment (ACT) mode:
Cd51 increments of (1 day)_(1hr), Display: default “0_0 “
“done” mm-dd this will be display is ACT has completed
“ACt” value “On” “OFF” or “----“Display /Select: default “OFF“
“trEAt” value °C / °F on 0.1 degree increments Display/Select: default “0.0°C“
“DAyS” value “0 – 99” increments of 1 Display/Select: default “0”
“ProbE” value Probe positions ex ’1 2 _ 4’ ’1 _ 3 _’ Display: default “---- “
“SPnEW” value °C / °F on 0.1° increments Display/Select: default “10.0°C “
Initially Cd51 will display current countdown timer increments of (1 day)_(1hr),
default “0_0.
See
for procedure to set ACT using Cd51.
Press the ENTER key to take the interface down into a hierarchy of parameter
selection menus (act, treat, days, probe and spnew setting).
Press the ENTER key in any of the parameter selection menus to commit
selection of the currently displayed parameter and cause the interface to
descend into the next parameter selection menu. All parameter selection menus
alternate between a blank display and the current selection in the right hand
display.
Press the CODE SELECT key in a selection menu to cancel the current selection
activity and ascend back up to the next higher selection menu (or to Cd51 display
mode if that is the next higher).
If the operator does not press any key for five seconds, the interface reverts to
normal system display and the current selection menu is cancelled, but any
previously committed changes are retained.
Parameter with the exception of “Act” may not be altered if Cd51 is re-entered if
“Act” is “On”. When ACT has completed including reaching the new setpoint
“done” on the left display and the MONTH DAY of completion on the right display
will be displayed as the second entry in the menu. Turning ACT off clears this
entry. This action also resets Cd51 to initial time remaining. ACT must then be
turned on to view or modify the additional parameters.
Whenever any auto pre-trip test or Trip Start is initiated, ACT mode goes to OFF.
Table 4–8 Controller Function Codes (Continued)
Code Title
Description
