Setting Of Alarm Resume Time; Alarms & Safety Functions - Sanyo MDF-594C Instruction Manual

SETTING OF ALARM RESUME TIME

The alarm buzzer is silenced by pressing alarm buzzer stop key (BUZZER) on the control panel during
alarm.
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 3 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 (Initial setting 130) at the factory.
Table 3. Setting procedure (change from 30 minutes to 20 minutes)
Description of operation
1
Press the numerical value shift key
2
for about 5 seconds.
Set to F25 with the digit shift key
3
and numerical value shift key.
4 Press enter key.
Set to 130 with the digit shift key
5
and numerical value shift key.
6 Press enter key.
• The settable alarm resume time is between 10 and 60 minutes with 1 minute increment. (The setting is
110, 111, ------- 159, 160). The buzzer would not reset if the resume time is set in 100.
• The buzzer is ON when the resume time is changed in F25 while the resume time is counted (the
buzzer is silenced by alarm buzzer stop key (BUZZER)). The count of resume time is stopped.
• The setting cannot be changed during power failure.
• The set mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing enter key (ENT) is not memorized.
• It is selectable whether the buzzer is in conjunction with the remote alarm or not when the buzzer is
silenced by alarm buzzer stop key (BUZZER). (The remote alarm is not in conjunction with the buzzer
by factory setting.)
• The remote alarm is activated in conjunction with the buzzer if the third digit "1" is set to "0" in the step 5
above.
ALARMS & SAFETY FUNCTIONS
This unit has the alarm and safety functions shown in table below, and also self diagnostic function.
Table 4. Alarm and safety function
Alarm & safety
When the chamber temp. is
High temperature
approx. 10
alarm
than the set temp.
Power failure At power failure When
alarm power cord is disconnected.
Key operated
-----
ENT
ENT
Situation
o o
C (or 15 C) higher Alarm lamp blinks.
Alarm lamp blinks.
43
Indication after operation
The current chamber temperature is
displayed.
The first digit blinks.
The settable digit is shifted.
When pressed, the figure of settable
digit changes.
The current setting is displayed
and the first digit blinks.
The settable digit is shifted.
When pressed, the figure of settable
digit changes.
Alarm resume time is memorized
and the current chamber
temperature is displayed.
Indication Buzzer
Intermittent
tone with
12 min.
delay.
Intermittent
Tone.
Safety operation
Remote alarm
with 12 min.
delay.
Remote alarm.
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