OHM ELECTRIC COOL CABI OCA-S2300AC, Instruction Manual, Page: 32 / 44

10
4-5 Parameter setting
Normally, there is no need to change the setting of the parameters. If necessary, follow the
procedures described below.
Push the SET button for more than 3 seconds in a status that the internal temperature is indicated.
The parameters are indicated in the following order. Press SET button to
move to the next parameter. Display a parameter desired to be changed and
set the value using UP and DOWN buttons. Set the parameter by pressing
SET button.
- Differential Initial setting
：
5
℃
Setting range: 3 – 10
℃
This indicates the temperature difference against the setting
temperature at which the compressor stops
Caution : Setting of the temperature and the differential value should
be made so as to avoid repetition of compressor ’ s on/off operation
of more than 5 times in an hour.
- Compulsory cooling operation time Initial setting: 30 sec
Setting range : 0 – 99 sec
This indicates the time of compulsory operation time when UP and
DOWN buttons are pressed for 3 seconds or more at the same time.
- High Temp. Alarm setting Initial setting : 45
℃
Setting range: 0 – 99
℃
This indicates the temperature at which High Temp. Alarm turns ON.
- Differential for Alarm Initial setting : 2
℃
Setting range : 1 – 20
℃
This is a differential for setting High Temp Alarm.
AL – dA = the temperature at which the alarm turns off
- Maintenance-reminder Initial setting: 0 Setting range : 0-99
This is the function to remind you maintenance works
in a timely manner.
0 : This function is ineffective
1-99 : 1 means 100 hours. Notification period can be set
between 100 to 9900 hours.
*Time measurement in the control board is made on
an hour basis.
As an example, if this is set to 99, notification is made in
9900 hours after power input, which is nearly equivalent
to 412 days for a unit in 24-hour operation.
- Compulsory cooling operation setting at power input
Initial setting: 0 Setting : 0 or 1
This is to set the compulsory operation when power connection
is made.
0 : Compulsory operation at power input is effective
1 : Compulsory operation at power input is ineffective
- Setting for restoration method from abnormal heat radiation alarm.
Initial setting: 0 Setting : 0 or 1
Select 0 or 1 for setting manual or auto restoration from abnormal
heat radiation alarm.
0 : Manual restoration
1 : Automatic restoration
Refer to “ 5. Alarm/Safeguard (2)
in page 15
” to clear the alarm.
- Setting of maintenance timer Initial setting: 1 Setting : 0 or 1
Set the contact output behavior at the set time for notification
of maintenance work.
0 : Contact output is ineffective
1 : Contact output is effective
Attention:
In case Auto restoration is selected, cooling operation will restart when
the overheat detector in the refrigerant circuit is reset. However, the
contact output and the alarm code indication will not be reset. Early
maintenance is recommended. Repeated Auto restoration without
solving the cause of problem may result in trouble of the product.