English6Typical remaining Battery capacityAccuracy is dependent upon the lifetime andcondition of the battery, as well as, the conditionof the unit. Outside variables such as temperaturemay 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 leftbased on 500+ mmHg/free flow). 1 LED flashes.During charging: indicates approx. achievedbattery capacity.Capacity Output*< 75% The LED’s will be lit sequentially75 - 80% 3rd LED’s lit and 4th flashing> 80% 4 LED’s lit.*Note: If no battery is installed, the battery statusindicator will be fully lit for approx. 5 sec. until itis turned off.During the Device TestIndicates which step of the test is currently inprogress or which corresponding test result isbeing displayed:LED 1 (lower LED) lit = STEP 1,LED 2 lit = STEP 2 etc.3.3 TEST-ButtonThis button allows you to run a4-step user initiated Device Testprogram to identify whether theLSU is operating satisfactorily or if it needsservice (see section 7).3.4 Power SourcesThe LSU is delivered with an AC Power Cord forconnection to AC mains and a DC Power Cordfor connection to DC mains.The device can be operated from the internalbattery, and can be operated or charged fromone of the following external Power Sources:• AC mains when used with the AC PowerCord: 100-240 VAC (50 / 60 Hz).• DC mains when used with the DC PowerCord: 12-28 VDC.A Wall Bracket to hold the LSU during operationand (optional) charging is available separately(see section 10).AC Connector SocketDC Connector SocketExternal power connection will causethe External Power Indicator to be lit.Always check that it is lit whenconnecting external power orinserting the LSU into the Wall Bracket.3.5 Automatic Power-save FunctionThe LSU has an Automatic Power-save Function that switches the pumpmotor off.While in this mode, the Power ON Indicator willflash slowly (approx. once per second).This function will be activated when theOperating Knob is set to 200, 350 or 500+mmHg and the actual vacuum level has beencontinuously higher than 120 mmHg for morethan 2 minutes.To exit the Power-save Mode and revert tonormal operation, set the Operating Knob toany other position and then go back to requiredsetting.