Alarms, Safety, And Self-Diagnosis - Sanyo MCO-19M Service Manual

ALARMS, SAFETY, AND SELF-DIAGNOSIS

The Incubator supports the following alarms, safety functions, and self-diagnostic functions.
Table 1: Alarms and Safety Functions for Culture Operations
Alarm or safety
function
Upper limit
The chamber temperature exceeds the
temperature
upper limit alarm temperature set value.
alarm
Automatic set
The chamber temperature is out of the
temperature
automatic set temperature alarm setting
alarm
range (±1.0 to ±5.0
Automatic set
The chamber CO
CO
2
of the automatic set CO
concentration
alarm setting range (±0.5% to ±5.0%).
alarm
Automatic set
The chamber O
O
2
the automatic set CO
concentration
alarm setting range (±0.5% to ±5.0%).
alarm
There are no key operations for approx.
Auto-return
90 s in a setting mode.
Key lock
The key lock is ON.
Door alarm
The outer door is open.
The CO concentration does not
CO gas 2
2
increase when the CO
cylinder empty
opened.
) gas
N (or O The O concentration does not increase
2 2 2
cylinder empty
when the N
The CO gas supply is switched
CO line
2
2
automatically to the reserve cylinder
changeover
(only when the MCO-21GC is installed).
) line
N (or O The N /O
2 2 2 2
changeover
automatically to the reserve cylinder.
Connection
The CO concentration keeps
mistake of 2
increasing when the CO
CO line and
2
closed.
N (or O ) line
2 2
Selection
The O concentration keeps keep
Mistake of
2
changing into the opposite direction
N gas and
2
when the N
O gas.
2
The chamber temperature sensor is
disconnected.
Chamber
temperature
sensor error
The chamber temperature sensor is
short-circuited.
The sensor box temperature sensor is
Sensor box
disconnected.
temperature
sensor error
The sensor box temperature sensor is
short-circuited.
The ambient temperature sensor is
Ambient
disconnected.
temperature
The ambient temperature sensor is
sensor error
short-circuited.
CO sensor
The Vref or Vgas output voltage for the
2
error
CO sensor is abnormal.
2
55
Conditions
OVERHEAT indicator lights.
Warning :High Temp or
Warning :Low Temp
is displayed in the message display
o
C).
field.
concentration is out Warning :High CO
2
concentration Warning :Low CO
2
in the message display field.
concentration is out of Warning :High O
2
concentration Warning :Low O
2
in the message display field.
Top screen is displayed.
Key Lock is displayed on the standby
operation setting screen.
Door
message display field.
Err01: CO
valve is
2
the message display field.
Err02: N
/O valve is opened. in the message display field.
2 2
Err01: CO
the message display field.
The text flashes for the empty CO
supply line.
Err02: N
gas supply is switched in the message display field.
The text flashes for the empty N
gas supply line.
Err03: CO
valve is
2
displayed in the message display field.
Err04: N
displayed in the message display field.
/O valve is opened.
2 2
Err05
is displayed in the message display
field.
Err06
is displayed in the message display
field.
Err07: CO
is displayed in the message display
field.
Err08
displayed in the message display field.
Err09: AT Sensor Open is displayed in
the message display field.
Err10: AT Sensor Short is displayed in
the message display field.
Err11: CO
Err12: CO
displayed in the message display field.
Display
Density or
2
Density is displayed
2
Density or
2
Density is displayed
2
： Open is displayed in the
Gas Empty is displayed in
2
/O Gas Empty is displayed
2 2
Gas Empty is displayed in
2
gas
2
/O Gas Empty is displayed
2 2
/O
2 2
Gas Connect Abnormal is
2
/O Gas Connect Abnormal is
2 2
： Temp Sensor Open
： Temp Sensor Short
S Box Temp Sensor Open
2
： CO S Box Temp Sensor Short is
2
Sensor Vref Abnormal or
2
Sensor Vgas Abnormal is
2
- 162 -
Buzzer Safety operation
Heater OFF
Continuous tone Remote alarm
operates
Intermittent tone
Remote alarm
after set alarm delay
operates after delay
time (0 to 15 min)
of 0 to 15 min.
has elapsed
Intermittent tone
Remote alarm
after set alarm delay
operates after delay
time (0 to 15 min)
of 0 to 15 min.
has elapsed
Intermittent tone
Remote alarm
after set alarm delay
operates after delay
time (0 to 30 min)
of 0 to 30 min.
has elapsed
The setting mode is
-----
canceled.
Setting changes are
-----
prohibited.
The CO valve is
2
Intermittent tone closed.
after set alarm delay The N /O
2 2
time (1 to 30 min) closed.
has elapsed The heater turns
OFF after 1 min.
Remote alarm
Intermittent tone
operates.
Remote alarm
Intermittent tone
operates.
The CO gas supply
2
is switched.
〃
Remote alarm
operates.
The N /O
2 2
supply is switched.
〃
Remote alarm
operates.
The CO valve is
2
closed.
〃
The N /O
2 2
closed.
The CO valve is
2
closed.
〃
The N /O
2 2
closed.
The heater turns
OFF.
〃
Remote alarm
operates.
The heater turns
OFF.
〃
Remote alarm
operates.
CO valve is closed.
2
〃 Remote alarm
operates.
CO valve is closed.
2
Remote alarm
〃
operates.
Remote alarm
〃
operates.
Remote alarm
〃
operates.
CO valve is closed.
2
Remote alarm
〃
operates.
valve is
gas
valve is
valve is