Alarm system
All alarm states of the equipment are states of the middle priority technical
alarm according to EN 60601-1-8. Each alarm state is indicated by the
corresponding visual and auditory signal (see Chapter 2 - Display Unit and
Chapter 3 - Technical Data).
Alarm states indicate a potential failure of the device. Therefore, it is not
possible to deactivate the alarm signals.
All alarm signals are non-latching – after the triggering event no longer exists
the alarm signals stop.
Low pressure. A decrease in outlet pressure is indicated by the alarm
PRESSURE (2) which sounds an alarm and illuminates the yellow indicator.
The alarm is activated if the outlet pressure does not reach the required level
and in the interval after the compressor is turned on until it reaches the
required pressure. If the alarm stays on, make sure that the air consumption
does not exceed outlet flow according to specification. If air consumption is
within normal parameters, contact a service centre.
High temperature. A cooling failure is indicated by the alarm TEMP (3)
which sounds an alarm and illuminates the yellow indicator. The device must
be immediately disconnected from the electrical mains and cooled down.
Cooling failure activation may indicate that the vent holes were covered, the
filter in the bottom part of the compressor is contaminated or the compressor
is in environment with higher temperature. If none of these circumstances
apply, a malfunction has occurred and service is required.
Power failure. The alarm MAINS (5) is activated upon the interruption in the
power supply to the compressor.
Operators must quickly secure a backup air source for the patient in the
event any of these signals activate during equipment operation.
Test of the alarm system functionality is performed automatically when the
equipment is switched on by a short testing activation of the visual and
auditory alarm signals (light up of LED indicator and auditory pulse).
Cleaning and replacing the filters
At least once a week take out and clean the suction filter (15) located on the
back side. Wash the filter in warm soapy water, rinse thoroughly and allow it
to dry. Insert the clean filters so that the intake openings are completely
covered by the filters.
Cleaning the compressor
To clean the compressor, use a detergent that contains no abrasives,
chemical solvents or other corrosive agents.
NP-DK50 DS-28_02-2021
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OPERATION