35
TROUBLESHOOTING
If the incubator does not seem to be working properly, check the following items before calling for service.
Malfunction Check/Remedy
The incubator does not
operate at all.
•
The incubator is not plugged correctly into a power outlet.
•
The circuit breaker at the power source is active or a power
failure has occurred.
The key operation is disable
•
The key lock function is set in ON mode.
If the alarm function and the
buzzer operates
[At the beginning of operation]
•
The chamber temperature is not equal to the set value.
•
The chamber CO
2
density is not equal to the set value.
a. The secondary pressure of the gas regulator is not equal to
the set value (0.03 MPa(G), 0.3 kgf/cm
2
(G), 4.4 psi(G)).
b. The gas tube is not connected securely between the gas
regulator and the incubator.
[During operation]
•
The high limit temperature alarm is not set at least 1
o
C higher
than the set chamber temperature.
•
The set temperature value was changed, or the door was left
open for a long period. Or a low temperature load was placed
inside the incubator. In this case, if the incubator is left as it is,
the alarm will eventually clear itself.
•
The gas tube has slipped off or the gas leaks.
•
The set value of the gas density was changed.
•
The gas cylinder is empty. Check the primary pressure of the
CO
2
cylinder once a week. (The primary pressure of less than
3.8 MPa(G) (38 kgf/cm
2
(G), 551 psi(G)) means a little gas in the
cylinder. Replace the cylinder soon.)
It is used near an electric product which emits an
electromagnetic wave.
If the chamber temperature
is not equal to the set
temperature
•
The ambient temperature must always be at least 5
o
C less than
the set temperature.
•
The outer door was closed while the inner door was left open.
It is used near an electric product which emits an
electromagnetic wave.
If the CO
2
gas density does
not coincide with the set
value
•
The secondary pressure is not set to 0.03 MPa(G) (0.3
kgf/cm
2
(G), 4.4 psi(G)).
•
The gas tube is clogged or chinked.
•
The humidifying pan is not filled with sterile distilled water.
(Always use sterile distilled water.)
It is used near an electric product which emits an
electromagnetic wave.
If the chamber humidity does
not rise
•
The humidifying pan is not filled with sterile distilled water.
(Always use sterile distilled water.)
If the CO
2
consumption is
too much
•
The outer and inner doors are opened frequently.
•
There is any gas leakage at the connection or pin hole on the
gas tube. It is recommended to replace the gas tube once a
year.
•
The gasket of the inner door is not completely sealed.
•
The access port at the upper left corner is opened.
If normal cultivation cannot
be done and chamber gas
density is suspect
•
The environment around the incubator is not normal. The
source of the contaminated gas is nearby.
•
The incubator is installed in an enclosed space.
