2 • Safety Instructions
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80113-401_V24023
2023-05
WARNING
Gas pressure too high
Risk of accidental tissue damage due to unnecessarily severe or un-
wanted freezing.
Increased pressure can damage the instrument head and instrument
tube.
An acoustic signal and a warning are output. Excessive gas pressure
can be caused by an equipment fault, or if the gas bottle is too warm
or too full.
Do not place the CO
2
bottle close to a heat source. Heaters or air
conditioners are examples of heat sources. Do not actively heat
the CO
2
bottle, e.g. using a fan heater. Do not expose the CO
2
bot-
tle to direct sunlight.
Operate and store the CO
2
bottle upright.
Close the bottle valve, use a different gas bottle or allow the gas
bottle to cool in a location under 25 °C.
If the error message continues to appear after these measures
have been implemented, close the bottle valve and inform Tech-
nical Service. The unit is defective. You must not use a defective
unit.
NOTICE
Pressure in the gas bottle too low
If you operate the CO
2
bottle at a room temperature below 15 °C, the
bottle pressure and the flow of CO
2
will be too low. The unit can no
longer operate at full power.
Work at a room temperature above 15 °C.
If the pressure is too low, this may also indicate that the gas bottle
is empty. If this is the case, replace the gas bottle.
CO
2
bottle with dip tube, horizontal CO
2
bottle
Liquid CO
2
escapes. Pressure in the unit is too high.
The unit may be damaged.
Do not use a CO
2
bottle with a dip tube.
Operate the CO
2
bottle upright.
Risks due to gas
CAUTION
Dangerous CO
2
concentration in room
A high concentration of CO
2
in the air can cause suffocation. CO
2
is
heavier than air. If discharge is not controlled, dangerous accumula-
tions can develop close to the ground.
Observe the national regulations regarding concentrations of CO
2
permitted in the workplace.
Connect the Erbe waste gas tube to the waste gas nozzle on the
unit. Direct the waste gas into the anesthetic suction system or
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