Thermo Scientific Revco Installation And Operation Manual

5
Thermo Scientific Revco Laboratory Refrigerators Installation and Operation
6.2 Display Functions
Table 2. Control Panel Display Functions (including optional alarm functions)
6.3 Alarm Setpoints
To enter programming mode, press Scan, hold for 5 seconds, and release. The first two values displayed are the warm and cold alarm
setpoints. Note that the alarm setpoints cannot be adjusted when the key switch is in the alarm position.
Table 3. Alarm Setpoint Programming Functions (with Alarm Option Only)
6.4 Service Mode Parameters
When the key switch is not turned to third (alarm) position, you can access service parameters by entering programming mode and
pressing Scan for an additional 5 seconds. On release of the button, the display will go blank, then display “SEr” with the service
wrench icon illuminated. Then the firmware checksum (read-only) will be displayed for about 4 seconds. Pressing Scan repeatedly
scrolls through the available service functions. While you are in service mode, the wrench icon is illuminated. For any flashing
parameter you can use
and to adjust the value.
CAUTION! Resetting any of the following parameter values could adversely affect the performance of your refrigerator.
These settings very rarely need to be changed for normal +4ºC operation. Be sure to call Service before making any
adjustments to parameter values.
Table 4. Programming Parameters
Function Meaning Sequence Display
Normal operation
Default display while refrigerator
is running
— Temperature display, thermometer show cabinet temperature.
Cold excursion
Show coldest cabinet temperature
since last startup or reset
Press
Thermometer, display show cold excursion while button is
pressed.
Warm excursion
Show warmest cabinet temperature
since last startup or reset
Press
Thermometer, display show warm excursion while button is
pressed.
Mute Silence audible alarm Press
Scan
Thermometer, display show cabinet temperature, alarm icon
continues to flash.
Reset
Return to default display after
excursion or alarm condition
Press and
simultaneously, hold
for five seconds
Excursion values are reset; thermometer, display show cabinet
temperature. Display blinks to confirm reset.
Alarm test
Test by simulating warm and cold
alarm conditions; key switch must be
in alarm mode
Press and
Scan
simultaneously, hold
for five seconds
Display and thermometer show simulated cabinet temperature,
alarms flash and sound as appropriate. Alarms clear when test is
completed.
Function Programming Sequence
Adjust cold alarm setpoint
Enter programming mode by pressing
Scan and holding for 5 seconds. On release, the current cold alarm
setpoint value flashes in the temperature display; use and to adjust it. The display automatically returns
to normal operating mode 30 seconds after the last key entry or after scrolling through all available functions
and parameters.
Adjust warm alarm setpoint
Enter programming mode and press
Scan repeatedly. The current warm alarm setpoint value then flashes in
the temperature display; use and to adjust it. The display automatically returns to normal operating
mode 30 seconds after the last key entry or after scrolling through all available functions and parameters.
Parameter Display Notes
1. Offset Value
Center air temperature calibration. Default value is 0 (maximum + or -
2.9).
2. Cut On Cut (2 sec.); On (2 sec.); then value
Cabinet temperature at which compressor starts to cool down to
setpoint. Default value is 6ºC.
3. Differential dIF (2 sec.); then value
Cut on – differential = temperature at which compressor stops after
achieving cabinet temperature setpoint. Default value is 3.
4. Defrost Interval dEF (2 sec.); Int (2 sec.); then value Range 1 to 12 hours; default value is 01.
5. Defrost Duration dEF (2 sec.); dur (2 sec.); then value Range 5 to 30 minutes; default value is 15.
6. Defrost HIgh-tempTermination dEF (2 sec.); HI (2 sec.); then value
Temperature at evaporator at which defrost cycle terminates; default
value is 4ºC.
7. Short Cycle Delay SHO (2 sec.); Cyc (2 sec.); then value Range 0 to 15 minutes; default value is 0.
8. Control Probe Temperature Cnt (2 sec.); Prb (2 sec.); then value Display only.
9. Network address nEt (2 sec.); Adrt (2 sec.); then value Can only be modified by RS-485 communications software.
10.Defrost Probe Temperature dEF (2 sec.); Prb (2 sec.); then value Display only.

Thermo Scientific Revco Specifications

General

Brand	Thermo Scientific
Model	Revco
Category	Refrigerator
Language	English