Sanyo MBR-1404G Instruction Manual page 19

OPERATING INSTRUCTIONS
Alarm, safety function, and self diagnostic function
This unit has the alarm and safety functions shown in Table 2, and also self diagnostic function.
Table 2 Alarm and safety functions
Kind of alarm
or safety
High If the upper or lower
temperature temp. sensor senses a
alarm temperature ≧6
Low If the upper or lower
temperature temp. sensor senses a
alarm temperature ≦2
If the high-temp.
Over-temp. thermostat sensor
(high) alarm senses a temperature
approximately＞10
Interruption of power to
Power failure
unit or power switch is
alarm
turned off.
Outer door is ajar or
Door alarm
open.
No key operation on
Auto return control panel for ≧90
seconds.
Upper temperature
sensor goes open or
short circuit.
Lower temperature
sensor goes open or
Thermal short circuit.
sensor
abnormality
Defrost sensor goes
open or short circuit.
Over-temp. sensor goes
open or short circuit.
Note: The remote alarm contacts will activate in conjunction with the audible alarm. The remote alarm
contacts can be deactivated while pressing the BUZZER key when the unit is in alarm, except in a power
failure alarm where the contacts will remain in an alarm condition until the power failure is corrected. 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 set procedure
Press the ALARM TEST key. The audible and visual alarm indicators will activate along with the remote
alarm contacts. The alarm condition will remain active for 90 seconds and then terminate automatically.
Otherwise the alarm test can be terminated manually at any time during the rest by pressing the ALARM
TEST key a second time.
Situation
o
C. Alarm lamp flashes.
o
C.
Unit should already be
in alarm. No further
indication required.
o
C.
Alarm lamp flashes.
Temp. indication off.
Door check lamp is lit.
Monitor bottle temp. is
displayed.
Alarm lamp flashes.
Monitor bottle temp.
E1 are alternately
displayed.
Alarm lamp flashes.
Monitor bottle temp.
E2 are alternately
displayed.
Alarm lamp flashes.
Monitor bottle temp.
E3 are alternately
displayed.
Alarm lamp flashes.
Monitor bottle temp.
E4 are alternately
displayed.
Indication Buzzer
Intermittent tone.
Unit should
already be in a
high temp. alarm.
Intermittent tone.
Intermittent tone
after a delay of 2
minutes.
Intermittent tone
18
Safety operation
Remote alarm is
active.
Remote alarm is
active.
Compressor ON.
Heater OFF.
Remote alarm is
active.
Not affected.
Calibration mode
-----
is canceled.
Remote alarm is
active.