COLD ROOM CONTROLLER
USER MANUAL
www.ascontrols.com
INDIA
CRC-1001 / CRC-1001-C
DESCRIPTION
PARAMETER
Introduction
Pg.
No.
Index Index
01
DESCRIPTION
PARAMETER
Pg.
No.
02
Get to Know Your Controller
Parameter List
4
5
To set the cut-out point of the controller.
To set maximum allowable high temperature
limit.
SET POINT
P2
To set the Minimum Cooling Temperature.P3
To set the differential for compressor restart.
P4
To set probe calibration.
P5
To set time delay between relay restart time.
To set duration of defrost.
P6
P7
To set defrost frequency.
P8
To set power on defrost delay.
P9
To enable or disable Buzzer.
BUZ
To set under voltage limit.
UV
To set over voltage limit
OV
To set voltage differential.
V0
AL
Power on time delay for alarm.
5
6
6
8
8
10
7
7
7
8
9
9
9
10
To set time delay for voltage sensing.
V1
10
To set Over current limit.
OL
11
To set Under current limit.
UL
10-11
Key Introduction
5
To set Current sensing delay.
C2
11
D0
To enable or Disable HP sensing.
12
3
Main Programming Mode
5
Suggested wiring diagram for CRC-1001-C
To enable or disable LP sensing.
D1
To set fault sensing logic.
D2
To set LP sensing delay.
D3
To set reset mode for HP fault.
D4
To set Compressor Relay
status on Probe Failure.
E1
To set Evap fan status when
compressor is OFF.
E2
To set EVAP Fan operation at door open.
E4
End of programming.
EP
Technical Data
Suggested wiring diagram for CRC-1001
E3
To set Crankcase Heater operation
when compressor is OFF.
12
14
14
14
17
18
19
12
13
13
13
20
To set Display at defrosting.
E7
14
To set time delay to switch off the light .
LD
15
To change password.
PW
15
To set Unit ID. (For CRC-1001-C only)
Unit ID
16
Factory set parameter.
FS
15
Compressor run Hours.
CRH
15
Clear Compressor Run Hours.
CCRH
16
To activate Keypad Lock.
KEYPAD LOCK
16
Caution & Warranty
21
To enable/disable Power Switch.
PO
17
The CRC-1001/CRC-1001-C are single set point cold room
controllers. The Sub-Zero CRC-1001/CRC-1001-C are
aesthetically superior versions of their predecessors.
A number of parameters are displayed alphanumerically to set
up the instrument for each specific function.
The CRC-1001/CRC-1001-C controller can be used for
several applications with a measuring range from
O O
-50.0 C to50.0 C.
The controller controls the defrost in the system based on time
based where the compressor is stopped. It is also possible to
select the interval between defrosts and a maximum time out
after which the defrost is interrupted.
There are safety features which include shutting down the
system incase of a fault from a pressure control or similar
device.
A series of “safety controls” (delay at start-up, minimum disable
time, minimum time between activation) protects the
compressors from close starts. In case of probe error or
temperature alarm, the instrument signals the event through
acoustic signal and by closing the relay contact. By pressing
the mute key, the buzzer is silenced.
Introduction
03 04
Get to Know Your Controller
Items included
NO.
1.
2.
3.
4.
QTY
ITEMS
CONTROLLER
CATALOGUE
NTC SENSOR 3 METER
1
1
1
3
6 X 25 SCREW
R
CRC-1001
FAULT LOG VOLT
Amp.
HP/LP
UL/OL UV/OV
E
RST
PRG
SET
AUX
Dot Matrix LED Display
LED
Indications
Lamp
Key
Reset
Key
Defrost
Key
Program Mode
Key
Up / Volt.
Key
Down / Amp.
Key
Set Key
Power ON/OFF
Key
Fault
Log Key
N
C
E
Y
G
S
R
T
E
O
M
P
E
Key Introduction
Auxiliary/Fault Log Key
Alarm Reset Key
Defrost Key
RST
AUX
PRG
Program Key
Up/Volt Key
SET
Down/Amp. Key
Set Key
Power Key
Lamp ON/OFF Key
Press PRG Key to Enter Programming mode
/ ESC Key.
1> USER PROGRAM
MAIN SYSTEM PROGRAMMING MODE
Press AUX/FAULT LOG Key to View last
9 Fault Log.
3> FAULT LOG
05
SET POINT To set the cut-out point of the controller.
Display will change to set value.
The set point value can now be changed
by using the UP/DOWN key. After
desired value, press the SET key & you
will see “-- ” which confirms that the set
point has been stored in memory.
01
Press and hold SET key
for 2 seconds and
Release.
P3+0.5
P2-0.5
0.0ºC
SET
Min: MINIMUM Max : MAXIMUM
Fact. Set : FACTORY SETTING(DEFAULT)
Sr.
No.
Parameter setting method
Description of parameters and functions.
Parameter
Range
Min Max
Fact. Set
02
P2
Parameter
Function : To set maximum allowable
high temperature limit.
To change P2 parameter,
press the set key.
Use UP/DOWN key to set desired value.
Example : Setting this parameter
0
at 30.0 C will not allow the set point to go
0
above 30.0 C also if the temperature
0
reaches 30.0 C, the display will show HT
(High Temperature). The alarm will be
ON. But at power on till the AL delay is
over controller will not generate HT Alarm.
Once set at a particular value, this will
not allow the set point to go above this
value and below P3 setting.
03
P3
Parameter
Function : To set minimum allowable low
temperature limit.
Use UP/DOWN key to set desired value.
Example : Setting this parameter
0
at -30.0 C will not allow the set point to
0
go below -30.0 C also if the temperature
0
reaches -30.0 C, the display will show
LT (Low Temperature). The alarm will be
ON.
Once set at a particular value, this will
not allow the set point to go below this
value and above P2 setting.
To change parameter,
press the set key.
P3
Set Point
+0.5
50.0ºC 50.0ºC
-50.0ºC
Set Point
-0.5ºC
-50.0ºC
06
PRG
To set other parameter
Press & hold PRG key for
2 seconds
Display will show ‘P2’ and scroll the
description of the parameter.
To go to other parameters ,
use up / down keys.
Range
Min Max
Fact. Set
Sr.
No.
Parameter setting method
Description of parameters and functions.
Parameter
Range
Min Max
Fact. Set
Press RST Key to reset alarm relay & buzzer.
4> Mute
Press SET Key to Enter Set mode.
2> SET MODE
Press Defrost Key for manual defrost.
5> Manual Defrost
Press Down/Amp Key to see the compressor
current.
6> View Current
Press UP/Volt Key to see the voltage.
7> View Voltage
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