6
Typical remaining Battery capacity
Accuracy is dependent upon the lifetime and
condition of the battery, as well as, the condition
of the unit. Outside variables such as temperature
may also affect accuracy.
Battery Capacity Output
> 50 % 4 LEDs lit.
30 - 50% 3 LEDs lit.
20 - 30% 2 LEDs lit.
< 20% 1 LED lit.
Battery Low; (min. 1 minute of operation left
based on 500+ mmHg/free flow). 1 LED flashes.
During charging: indicates approx. achieved
battery capacity.
Capacity Output*
< 75% The LED’s will be lit sequentially
75 - 80% 3rd LED’s lit and 4th flashing
> 80% 4 LED’s lit.
*Note: If no battery is installed, the battery status
indicator will be fully lit for approx. 5 sec. until it
is turned off.
During the Device Test
Indicates which step of the test is currently in
progress or which corresponding test result is
being displayed:
LED 1 (lower LED) lit = STEP 1,
LED 2 lit = STEP 2 etc.
3.3 TEST-Button
This button allows you to run a
4-step user initiated Device Test
program to identify whether the
LSU is operating satisfactorily or if it needs
service (see section 7).
3.4 Power Sources
The LSU is delivered with an AC Power Cord for
connection to AC mains and a DC Power Cord
for connection to DC mains.
The device can be operated from the internal
battery, and can be operated or charged from
one of the following external Power Sources:
• AC mains when used with the AC Power
Cord: 100-240 VAC (50 / 60 Hz).
• DC mains when used with the DC Power
Cord: 12-28 VDC.
A Wall Bracket to hold the LSU during operation
and (optional) charging is available separately
(see section 10).
AC Connector Socket
DC Connector Socket
External power connection will cause
the External Power Indicator to be lit.
Always check that it is lit when
connecting external power or
inserting the LSU into the Wall Bracket.
3.5 Automatic Power-save Function
The LSU has an Automatic Power-
save Function that switches the pump
motor off.
While in this mode, the Power ON Indicator will
flash slowly (approx. once per second).
This function will be activated when the
Operating Knob is set to 200, 350 or 500+
mmHg and the actual vacuum level has been
continuously higher than 120 mmHg for more
than 2 minutes.
To exit the Power-save Mode and revert to
normal operation, set the Operating Knob to
any other position and then go back to required
setting.
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