Dräger Primus SW 4.5n Instructions For Use Manual page 182

Remedying faults
WARNING
Risk of patient awareness
If a complete gas supply failure occurs, fur-
ther operation is guaranteed by supplying the
anesthesia machine with ambient air. Anes-
thetic agents will no longer be delivered and
the inspiratory gas composition will be di-
luted.
Carefully monitor the gas mixture and, if nec-
essary, use IV anesthetics.
WARNING
Risk of gas supply contamination
When the central gas supply is connected, the
smallest internal leakage can cause contami-
nation of the supply gases.
Disconnect the compressed gas hoses from
the terminal unit if the central gas supply fails
during operation.
The failure of the central gas supply may lead to the
failure of connected devices.
CAUTION
Risk of increased ambient gas concentrations
If the breathing bag is not attached, expiratory an-
esthetic agents can escape from the breathing
system.
Ensure sufficient ambient air circulation.
The cylinder valve on the corresponding reserve
gas cylinder must be closed again after restoring
the central gas supply.
CAUTION
Risk of supply failure
If the valves remain open when connected to the
central gas supply, gas may be withdrawn from
the reserve gas cylinders.
Close cylinder valves whenever the central supply
is sufficient.
182
Instructions for use Primus SW 4.5n