20
INSTALLATION
Connecting CO
2
gas cylinder
WARNING
When connecting a gas cylinder to the incubator,
confirm the gas type
.
Confirm that the connections
are secure and that no gas will leak
.
Be sure to use the specified pressure
. Using an incorrect gas or
pressure may result in explosion or fire, or in gas poisoning or oxygen deprivation due to qas leak.
Install the incubator in a location with adequate ventilation.
If adequate ventilation cannot be provided,
then install an alarm system using CO
2
and O
2
densitometers.
1.
Get a CO
2
gas cylinder ready and install an optional gas regulator MCO-010R.
Note:
·
Use a liquefied CO
2
gas cylinder (at least 99.5 % pure). The siphon (dip tube) type cannot be used.
·
When MCO-010R is not available, install a gas regulator rated at 25 MPa(G) (250 kgf/cm
2
(G), 3600
psi(G)) for the primary side, and 0.25 MPa(G) (2.5 kgf/cm
2
(G), 36 psi(G)) for the secondary side.
2.
Using a gas tube that is provided, connect the
connecting port A for CO
2
gas pipe and the gas
regulator of the CO
2
gas cylinder.
When the the optional automatic CO
2
cylinder
changeover kit (MCO-21GC) is installed, refer to
page 79 for gas tube connection.
Note:
·
By using 2 tube bands that is provided, connect the gas tube tightly to prevent it from coming off.
·
Make sure that the gas tube is not folded.
·
If the CO
2
gas is supplied to multiple CO
2
incubators from a single gas cylinder, a CO
2
solid will be
formed in the gas regulator. The gas regulator safety valve will operate, and there may an explosive
sound.
3.
After connecting the gas tube, make sure that no gas is leaking (ex. by using a gas leak detection
spray).
4.
Adjust the secondary side pressure of the gas regulator to 0.03MPa(G)~0.1 MPa(G) (0.3 kgf/cm
2
(G)~1
kgf/cm
2
(G), 4.4 psi(G)~14.5 psi(G)) while CO
2
gas is injecting.
Recommended pressure: 0.03 MPa (0.3 kgf/cm
2
(G), 4.4 psi(G)).
Note:
As the pressure increases, the CO
2
gas density control range will increase. Excessive pressure may
cause gas supply lines inside the incubator to come loose, which may result in gas poisoning or oxygen
deprivation due to gas leak. If gas lines come loose, the incubator must be repaired.
5.
When there is no CO
2
gas left and the CO
2
gas empty alarm is activated, replace the empty gas cylinder
to a new one.
Note:
When an optional gas auto changer MCO-21GC is installed, it switches the empty CO
2
gas supply
line to the other automatically. Refer to page 80~81.
Note:
·
The gas lines connected to the incubator will degrade over time. If any deterioration or abnormalities are
found during inspection, replace the lines immediately.
·
Close the valve of the CO
2
gas cylinder when the CO
2
gas is not in use.
Connecting port A for CO
2
gas pipe
Lower right side
