Alarms & Safety Functions - Sanyo MPR-1013R - Commercial Solutions Lab Instruction Manual

ALARMS & SAFETY FUNCTIONS
This unit has the alarms and safety functions shown in Table 5, and also self diagnostic functions.
Table 5. Alarms and safety functions
Alarm & Safety
If the chamber temperature deviates
High temperature
from the set temperature +2
alarm
o
+14
If the chamber temperature deviates
from the set temperature -2
Low temperature
o
-14 C.
alarm
If the chamber temperature is lower
than 0
When the chamber temp. is higher
Over-heat
than 28
protection
temp. is lower than about 18
When the chamber temp. is lower than
Over-cooling
o
-1 C. (Reset when the chamber
protection
temp. is higher than 8
When the power to the unit is
Power failure alarm
disconnected.
Door alarm When the door is open.
When there is no key pressing in
Auto-return
each setting mode for 90 seconds.
Key lock When the key lock is "ON".
If the thermal sensor is disconnected
or short-circuited.
Thermal sensor If the defrost sensor 1 is disconnected
abnormality or short-circuited.
If the defrost sensor 2 is disconnected
or short-circuited. (MPR-1013,1013R
only)
When power failure or disconnected
Memory back-up
the power cord.
Note:
The remote alarm is silenced by pressing the buzzer stop key (BZ) as the remote alarm is operated in
conjunction with the buzzer, except for the power failure alarm.
When more than two alarm conditions occur simultaneously, the lowest number error code has priority on
the error display.
After a power failure, the unit will resume operation with the set value that was in place before power
failure occurred.
The over-cooling protection may activate when the set temperature is 2
temperature will rise to 8
Situation
o
C or up to
C.
o
C or up to
o
C.
o
C. (Reset when the chamber
o
C)
o
C)
o
C, but this is not malfunction.
Indication
ALARM lamp is flashed.
Intermittent tone with
Temperature indicator is
15 minutes delay.
flashed.
Intermittent tone with
ALARM lamp is flashed.
15 minutes delay.
Temperature indicator is
flashed.
Intermittent tone
-----
-----
-----
Intermittent tone with
Door check lamp is lit.
2 minutes delay.
Chamber temperature is
displayed.
-----
ALARM lamp is flashed.
o o
E01 and 50 C (or -50 C) Intermittent tone
are displayed alternately.
ALARM lamp is flashed.
E02 and chamber temp. Intermittent tone
are displayed alternately.
ALARM lamp is flashed.
E03 and chamber temp. Intermittent tone
are displayed alternately.
-----
o
18
Buzzer Safety operation
Remote alarm with 15
minutes delay.
Remote alarm with 15
minutes delay.
Remote alarm
Inside fan, drain pan
----- heater, defrost heater
OFF
----- Compressor OFF
----- Remote alarm.
-----
Finishing of each setting
-----
mode.
Change of setting is
-----
disable.
Remote alarm.
Operation by the defrost
sensor
Remote alarm.
Unit keeps running.
Remote alarm.
Unit keeps running.
----- Set value memorized
C. In this case, the chamber