Alarms & Safety Functions - Sanyo BLOOD BANK MBR-304DR Instruction Manual

ALARMS & SAFETY FUNCTIONS
This unit has the alarms and safety functions shown in Table 2, and also self diagnostic functions.
Table 2 Alarms and safety functions
Alarm & Safety
High temperature If the upper or lower temperature sensor
senses a temperature ≧ 6
alarm
Low temperature If the upper or lower temperature sensor
senses a temperature ≦ 2
alarm
Protection of If the high-temperature thermostat
excessive high sensor senses a temperature
temperature approximately > 10
Protection of
If the alarm sensor senses a
excessive low
temperature approximately < 2
temperature
When the power to the unit is
Power failure alarm disconnected or power switch is
turned off.
Door alarm When the door is ajar or open.
When there is no key pressing in
Auto-return
each setting mode for 90 seconds.
If the temperature sensor of upper
monitor bottle is disconnected or
short-circuited.
If the temperature sensor of lower
monitor bottle is disconnected or
Thermal sensor short-circuited.
abnormality
If the defrost sensor is disconnected or
short-circuited.
If the over-temperature sensor is
disconnected or short-circuited.
Note:
The remote alarm is silenced by pressing the buzzer stop key (BUZZER) as the remote alarm is operated
in conjunction with the buzzer, except for the power failure alarm. All alarm functions will auto-reset.
The buzzer and remote contacts will re-activate if the condition which caused the alarm is not corrected
within 30 minutes.
Alarm conditions will remain active for about 24 hours on a fully charged back-up battery in the event of a
power failure. Two days operation is required to fully charge the battery after initial start-up if the power
has been off for an extended period.
The remote alarm contacts will remain active even if the battery is discharged.
Alarm test procedure
The alarm function can be checked by the following procedure:
1. Press alarm test (ALARM/TEST) key.
2. The audible and visual alarm indicators activate along with the remote alarm. The alarm condition
remains active for 30 seconds and then terminates automatically. The audible alarm (buzzer) cannot be
silenced by pressing the buzzer stop key (BUZZER).
3. Otherwise the alarm test can be terminated manually at any time during the rest by pressing the
ALARM/TEST key again.
Situation
Alarm lamp flashes.
o
C.
Alarm lamp flashes.
o
C.
o
C.
o
C.
Alarm lamp flashes.
Door check lamp is lit.
Monitor bottle temperature is
displayed.
Alarm lamp flashes.
E1 and monitor bottle temp.
are displayed alternately.
Alarm lamp flashes.
E2 and monitor bottle temp.
are displayed alternately.
Alarm lamp flashes.
E3 and monitor bottle temp.
are displayed alternately.
Alarm lamp flashes.
E4 and monitor bottle temp.
are displayed alternately.
19
Indication Buzzer
Intermittent tone
Intermittent tone
----- -----
----- -----
Intermittent tone
Intermittent tone
with 2 minutes
delay.
-----
Intermittent tone
Intermittent tone
Intermittent tone
Intermittent tone
Safety operation
Remote alarm
Remote alarm
Compressor ON.
Heater OFF.
Compressor ON.
Heater OFF.
Remote alarm.
-----
Finishing of calibration
mode.
Remote alarm.
Remote alarm.
Remote alarm.
Remote alarm.