Setting Of Alarm Resume Time - Sanyo MDF-C8V Service Manual

SETTING OF ALARM RESUME TIME

The alarm buzzer is silenced by pressing alarm buzzer stop key (BUZZER) key on the control panel
during alarm condition (The remote alarm is not silenced). The buzzer will be activated again after
certain suspension if the alarm condition is continued. The suspension time can be set by following the
procedure shown in the Table 5 below.
The example in the table is based on the assumption that the desired duration is 20 minutes.
Note: The duration is set in 30 minutes at the factory.
Table 5 Setting procedure for alarm resuming time (change from 30 minutes to 20 minutes)
Description of operation
1 -----
Press numerical value shift key for
2
5 seconds.
Set the figure to F25 with the
3 digit shift key and numerical value
shift key.
4 Press set key.
Set the figure to 020 with the
5
numerical value shift key.
6 Press set key.
The settable alarm resume time is 10, 20, 30, 40, 50, or 60 minutes (The setting is 010, 020, 030, 040,
050, or 060). The buzzer would not reset if the reset time is set in 000.
It is recommended to set the alarm resume time when the freezer is not under alarm condition. The
new setting is effective on the next alarm condition.
The setting cannot be changed during power failure.
The remote alarm during power failure or buzzer and remote alarm during alarm test cannot be
silenced.
The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing the set key (SET) is not memorized.
17
Key operated
---- The current chamber temperature is
displayed.
The first digit is flashed.
Pressing the key shifts the digit which can be set.
When pressed, the figure of settable
digit increases.
The current setting is displayed.
SET
The middle digit is flashed.
When pressed, the figure of settable
digit increases.
Alarm resume time is memorized and
SET the current chamber temperature is
displayed.
50
Indication after operation