Page 71 of 85
viasis 3003 user manual
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8 Maintenance
8.1 Cleaning the front window pane
Attention: To clean a dirty front window pane use always a liquid antistatic
detergent or an antistatic cleansing towel!
Otherwise the transparent plastic front pane can be electrostatic charged up to sev-
eral kilovolts (frictional electricity) especially when using dry paper or synthetic textile towels.
The discharge pulse may destroy the semiconductor components in the microwave transceiver.
A damaged or destroyed microwave transceiver reduces the measurement distance range or
leads to a complete failure of the measurement display.
8.2 Charging and testing the lead acid battery
The battery is discharged, if the voltage level drops below 10,7 Volt. The battery is separated
below this level through the integrated low level discharge protection. Recharge the empty
battery immediately to avoid irreversible chemical destruction.
Attention: The batteries shall be stored only in loaded condition at dry loca-
tions!
The self-discharging of our delivered batteries is with 0,1% (at 20°C) of the loaded
capacity per day very low, so that charged batteries can be stored also for longer times (½
year) without any problems.
The battery voltage level can be checked under load condition at power on („188“ is displayed
and the battery voltage value follows) and when you connect a laptop or PC and use the test
function „
main battery
“, see also chapter 6.8, but without load. Is the battery voltage level
below 11,3 Volt the viasis will not start operation.
For the battery loading you should use our automatic battery charger, which stops loading at
the high level battery voltage of about 13,8 Volt. If you use a battery charger with no overload
protection, it might destroy the battery chemically if a voltage level of 13,8 Volt is exceeded.
Reverse connection of batteries and charger are impossible with the viasis battery connectors
which allow a plug in the coupling only in the correct way.
Attention, if you use third party chargers:
When connecting the cables of the
battery, take care of the right polarity! Connect the black minus pole of the
charger to the black minus pole of the battery and the red plus pole of the
charger to the red plus pole of the battery. Lead-acid gel batteries can be charged reverse
and herewith destroyed. Additionally the next connection to the viasis will cause a short
circuit and blow the fuse in such a case.
The time to load a completely empty 17 Ah battery with our battery chargers (load currents 2
Ampere) is approximately 10 hours to 90% of the battery capacity. The time to load the bat-
tery to full capacity (charger LED load control extinguishes) can be much longer.
