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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.
• Is the Incubator plugged in?
• Is there a power outage, or has a circuit breaker interrupted the
power?
The key is not working.
• Is the key lock function turned OFF?
An alarm has occurred. When starting operation:
• Does the chamber temperature match the set value?
• Does the CO
2
/O
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. 4.3 psiG)?
(2) Is the secondary pressure for the N
2
/O
2
gas pressure regulator at the
specified value of 0.05 MPaG (0.5 kgf/cm
2
G, 7.1 psiG)?
(3) Is the gas tube properly connected?
During operation:
• Is the upper limit alarm temperature set at least 1°C higher than the
chamber set temperature?
• 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.
• Has the gas tube come loose, or is there a gas leak?
• Has the CO
2
/O
2
gas concentration setting been changed?
• 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.
• Is the ambient temperature less than 5°C different from the set value
for the chamber temperature?
• Is the outer door closed with the gastight split doors or inner door left
open?
The gas concentration does
not match the set value.
• 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, 4.3 psiG)?
• Is the secondary pressure for the N
2
/O
2
gas pressure regulator at the
specified value of 0.05 MPaG (0.5 kgf/cm
2
G, 7.1 psiG)?
• Is the gas tube blocked?
The chamber temperature
does not rise.
• Is there enough water in the humidifying pan? (Be sure to use sterile
distilled water.)