20
SETTING OF RINGBACK OF ALARM BUZZER
The alarm buzzer operates again after certain period (ringback time) even if the alarm buzzer is silenced
by pressing the alarm buzzer stop key (BUZZER) when the same alarm status is continued. Set the
ringback time to prevent the misidentify the alarm status.
Setting range of ringback time: between 10 minutes and 60 minutes (10 minutes interval)
Display of setting: between 010 and 060 (000 display shows no ringback)
Initial setting (factory setting): 30 minutes
The alarm buzzer will not recover once the alarm buzzer is silenced by pressing the alarm buzzer stop
key (BUZZER) when the ringback time is set to 000. However, the alarm buzzer will operate if other
alarm status is detected.
Example: Change the ringback time to 20 minutes from 30 minutes
►
Following shows a sample setting. Set the desired ringback time according to the condition of use.
Description of operation
Key operated
Indication after operation
1
-----
The current chamber temperature is
displayed.
2 Press up arrow key for 5 seconds.
F00 is displayed and the first digit
blinks.
3 Press up arrow key 5 times.
The display is changed to F05 from
F00.
4 Press scroll key once.
The second digit blinks.
5 Press up arrow key twice.
The display is changed to F25 from
F05.
6 Press set key.
SET
The current setting (030) is displayed
and the second digit blinks.
7
Press up arrow key and scroll the
figure to 2.
The display is changed to 020 from
030.
8 Press set key.
SET
Ringback time is memorized and
the current chamber temperature is
displayed.
The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation (auto-return function). In this case, the setting is not accepted.
The setting should be performed during normal operation, not during alarm status.
OPERATION CHECK AFTER RECOVERY
After recovery from a power failure, the unit will resume operation automatically with the setting before
power failure. Accordingly, there is no need for re-set however, always check the running status after
recovery.
The set value is memorized by nonvolatile memory during power failure.
