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TROUBLESHOOTING
If the Incubator does not seem to be working properly, check the following items before calling for service.
Symptom Items to check and countermeasures
The Incubator does not
operate at all.
x Is the Incubator plugged in?
x Is there a power outage, or has a circuit breaker interrupted the
power?
The key is not working.
x Is the key lock function turned OFF?
An alarm has occurred. When starting operation:
x Does the chamber temperature match the set value?
x Does the CO
2
gas concentration in the chamber match the set value?
(1) Is the secondary pressure for the CO
2
gas pressure regulator at the
specified value of 0.03 MPaG (0.3 kgf/cm
2
G)?
(2) Is the CO
2
gas supply pipe properly connected?
During operation:
x Is the upper limit alarm temperature set at least 1qC higher than the
chamber set temperature?
x Has the temperature setting been changed? Has the door been left
open for a long time? Has a low-temperature object been placed in the
chamber? If any of these is the case, the alarm will be automatically
cleared if you wait.
x Has the CO
2
gas supply pipe come loose, or is there a gas leak?
x Has the CO
2
gas concentration setting been changed?
x Is the gas cylinder empty? Check the primary pressure of the gas
cylinder once a week. (When the primary pressure is 3.8 MPa (38
kgf/cm
2
G) or lower, it is a sign that there is little gas remaining.
Replace the cylinder soon.)
The chamber temperature
does not match the set value.
x Is the ambient temperature less than 5qC different from the set value
for the chamber temperature?
x Is the outer door closed with the inner door left open?
The CO
2
gas concentration
does not match the set value.
x Is the secondary pressure for the CO
2
gas pressure regulator at the
specified value of 0.03 MPaG (0.3 kgf/cm
2
G)?
x Is the CO
2
gas supply pipe blocked?
The chamber temperature
does not rise.
x Is there enough water in the humidifying pan? (Be sure to use sterile
distilled water.)
A large quantity of CO
2
gas is
being consumed.
x Are the doors being frequently opened and closed?
x Check whether gas is leaking from connectors due to deterioration of
the CO
2
gas supply pipe, or whether there may be any pinhole leaks.
The CO
2
gas supply pipe is a replaceable part, and it is recommended
that it be replaced once a year.
x Is the packing seal for the inner door defective?
x Is the access hole open?