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T-365
4–2
4.1.1
Key Pad
The key pad (
) is mounted on the control box door. The key pad consists of eleven push button switches
that act as the user’s interface with the controller. Descriptions of the key pad switch functions are provided in
.
Figure 4.2 Key Pad
CODE
SELECT
PRE
TRIP
ALARM
LIST
MANUAL
DEFROST/
INTERVAL
ENTER
BATTERY
POWER
ALT
MODE
RETURN
SUPPLY
C
F
Table 4–1 Key Pad Description
KEY
FUNCTION
Code Select
Accesses function codes.
Pre-Trip
Displays Pre-trip selection menu.
Discontinues Pre-trip in progress.
Alarm List
Displays alarm list and clears the
alarm queue.
Manual Defrost /
Interval
Displays selected defrost mode.
Depressing and holding the Defrost
Interval key for five (5) seconds will
initiate defrost using the same logic
as if the optional manual defrost
switch was toggled on.
Enter
Confirms a selection or saves a se-
lection to the controller.
Arrow Up
Change or scroll a selection up-
ward. Pre-trip advance or test inter-
ruption.
Arrow Down
Change or scroll a selection down-
ward. Pre-trip repeat backward.
Return / Supply
Displays non-controlling probe tem-
perature (momentary display)
Celsius / Fahren-
heit
Displays alternate English/Metric
scale (momentary display). When
set to F, pressure is displayed in
psig and vacuum in “/hg.” “P” ap-
pears after the value to indicate
psig and “i” appears for inches of
mercury.
When set to C, pressure readings
are in bars. “b” appears after the
value to indicate bars.
Battery Power
Initiate battery backup mode to al-
low set point & function code selec-
tion if AC power is not connected.
ALT Mode
This key is pressed to switch the
functions from the temperature
software to the DataCORDER Soft-
ware. The remaining keys function
the same as described above ex-
cept the readings or changes are
made to the DataCORDER pro-
gramming.
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