CSR-20 & CSR-40, September 1999
General Description
The
µ
P-D controller is a programmable microprocessor that
controls all unit functions to maintain the cargo at the proper
temperature. The controller contains the following basic fea-
tures:
1.
Two digital displays:
• SETPOINT: Five alpha numeric characters: Numerical
tens, ones and tenths position, a C for Celsius or F for
Fahrenheit for temperature display.
• TEMPERATURE: Five alpha numeric characters:
Numerical hundreds, tens, ones and tenths position, a C
for Celsius or F for Fahrenheit for temperature display.
2.
Ten control keys:
• SELECT: Press to select prompts and display screens
from controller menu.
• UP: Press to increase the setpoint or scroll UP through
controller menu.
• DOWN: Press to decrease the setpoint or scroll DOWN
through controller menu.
• ENTER: Press to load the setpoint (or other setting) and
execute other controller tasks.
• C/F (Temperature): Press to view alternate temperature
scale in display.
• RET/SUP (Temperature): Press to view alternate
return/supply sensor temperature.
• DEFROST: Press to prepare to initiate a manual defrost.
• PRETRIP: Press to prepare to initiate a Full Pretrip
Test.
• SOT (Start of Trip): Press to prepare to place Start of
Trip marker in the datalogger.
• ALARM: Press to view alarm codes that are present.
4
µµ
P-D Controller
µµ
P-D Controller
1. Status Indicator Lights
2. Setpoint (Left) Display
3. Temperature (Right) Display
4. Keypad
®
THERMO KING
IN RANGE
DEFROST SUPPLY RETURN PWRLMT ALARM
HEAT
NULL
MOD
COOL
SETPOINT
TEMPERATURE
DATA
DATA
°C
°F
RET
SUP
P
!
SELECT
UP
DOWN
ENTER
TEMPERATURE
DEFROST PRETRIP
SOT
ALARM
1
2
3
4
5
6
7
8
9
10
THERMOGUARD
µ
P-D
❇ ❇ ❇ ❇ ❇
❇ ❇ ❇ ❇ ❇
:
°
:
°
-
-
-
-
-
-
-
-
3
2
1
4
