Welder User Manual

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