75
GAS AUTO CHANGER (OPTION)
When the optional gas auto changer MCO-50GC is installed, two connecting ports for CO
2
gas pipes, A
and B are available. If two CO
2
gas cylinders are connected, the CO
2
gas supply line can be switched
when one of the CO
2
gas cylinders becomes empty.
Connecting CO
2
gas cylinders
1.
Prepare two CO
2
gas cylinders (CO
2
gas cylinder A and B) and attach the optional gas regulators
MCO-010R to both of the CO
2
gas cylinders.
Notes:
ꞏ
Use a liquefied CO
2
gas cylinder (at least 99.5 % pure). The siphon (dip tube) type cannot be used.
ꞏ
When MCO-010R is not available, attach gas regulators rated at 25 MPa(G) (250 kgf/cm
2
(G), 3,600
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.
Connect the connecting port A for CO
2
gas pipe
and the gas regulator for the CO
2
gas cylinder A
using the included gas tube.
3.
C
onnect the connecting port B for CO
2
gas pipe
and the gas regulator of the CO
2
gas cylinder B
using the included gas tube.
Note:
For connecting and removing the tube and
for connecting to the gas regulator MCO-010R,
refer to pages 19–20.
Note:
If the CO
2
gas is supplied to multiple O
2
/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 it may make
an explosive sound.
4.
After connecting the gas tube, make sure that no gas is leaking (ex. by using a gas leak detection
spray).
5.
For both CO
2
gas cylinders A and B, 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)).
Notes:
ꞏ
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 the escaping of gas. If gas lines come loose, the incubator must be repaired.
ꞏ
Close the valve of the CO
2
gas cylinder when the CO
2
gas is not in use.
Automatic CO
2
gas supply line switching
When an optional gas auto changer MCO-50GC is installed, CO
2
gas supply line indicator A and B is
displayed in the home screen. The CO
2
gas supply line currently in use is highlighted.
<Right side of the display>
Connecting port B for CO
2
gas pipe
Connecting port A for CO
2
gas pipe
CO
2
gas supply line indicator A and B
(
CO
2
gas supply line currently in use)
Lower right side
Summary of Contents for MCO-50ML
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