26
SETTING THE BUZZER SUSPENDED PERIOD
An abnormality is indicated again by the buzzer sounding after a certain period has elapsed (the buzzer
recovery time) if the alarm mode continues even after the buzzer has already been silenced by pressing
the buzzer stop key (BUZZER). Always set the “buzzer suspended period” to avoid incorrect recognition of
alarm mode.
Setting range of buzzer suspended period:
between 10 and 60 minutes in 10-minute intervals (display of setting: between 010
and 060) or no recovery (display of setting; 000)
Initial setting (factory setting): 30 minutes (display of setting: 030)
The buzzer does not sound again when the setting is 000. However, the buzzer will operate if other alarm
status is detected.
Example: Change the buzzer suspended time to 20 minutes from 30 minutes
► Following shows a sample setting. Set the desired suspended time according to the condition of use.
Operation
Key operated
Display after operation
1 -----
-----
The current chamber temperature is
displayed.
2
Press the up arrow key for 5
seconds.
F00 is displayed and the first digit
blinks.
3 Press the up arrow key 5 times.
The display is changed to F05 from
F00.
4 Press the scroll key once.
The second digit blinks.
5 Press the up arrow key twice.
The display is changed to F25 from
F05.
6 Press the “set” key.
SET
The current setting (030) is displayed
and the second digit blinks.
7
Press the up arrow key and scroll
the figure to 2.
The display is changed to 020 from
030.
8 Press the “set” key.
SET
Suspended time is memorized and
the current chamber temperature is
displayed.
The unit will return from setting mode to temperature display mode automatically after 90 seconds if no
key is operated (auto-return function). In this case, the setting is not changed.
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.
