Panasonic MCO-170AICL Operating Instructions Manual page 82

Symptom
Normal cultures are not possible,
and the CO gas density is
2
suspect.
CO gas is not being injected.
2
The CO gas density is slow to
2
recover.
UV lamp lights when the outer
door is open.
The outer door does not open.
Items to check and countermeasures
 Is the ambient air environment around the incubator normal? Is there a source of polluted
gas in the vicinity?
 The CO
control method for the incubator is the ON-OFF method. CO
2
intermittently injected as the gas density in the chamber approaches the set value.
Injections may be stopped for periods of approximately 15 seconds, but that is not an
error.
 The gas is not injected until the temperature of the CO
approx. 1 hour, after turning ON the power switch or recovering from power failure.
 A HEPA filter is used for the incubator CO
when the CO gas pressure is normal, it is possible that the HEPA filter may be clogged.
2
Contact our sales representative or agent.
 Is there little gas remaining in the CO
 Is the secondary pressure for the gas regulator at the specified value of 0.03 MPa(G)
2
(0.3 kgf/cm (G), 4.3 psi(G))?
 Is the gas tube blocked?
 Is the duct securely attached? Attach the duct properly to the 4 points hooks. (Fig. 1)
 Is the fan attached properly? Confirm if the fan is pushed all the way to the motor shaft.
(Fig. 2)
 Does something push the door switch?
MCO-170AICUVHL, or when the optional MCO-170EL is installed:
 When the power switch is OFF, the electric lock is locked and the outer door does not
open. Either turn ON the power switch or use the accessory unlock key to override the
electric lock.
 During decontamination the outer door is electrically locked and does not open.
sensor becomes stable enough
2
gas piping. If gas density is slow to recover
2
gas cylinder?
2
gas is
2
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