Fig. 40 Battery charger
1
Voltmeter
2
Ammeter
3
Motor overload protection switch
4
Safety cut-out
Activating the battery charger:
1. Switch on the overload protection switch.
2. Switch on the safety cut-out.
The meters indicate the charging voltage and current.
Checking battery charger function
The charger function should be checked weekly.
Instruments
Voltmeter
Ammeter
Display
Charging voltage [V
DC]
Charging current [A
DC]
Value
≥26.6
>0.5
Tab. 60 Battery charger control
CAUTION
Cutting the supply voltage of the battery charger.
Starter batteries discharge through a connected battery charger. This can result in a total discharge
and destruction of the batteries.
➤ If the supply voltage is switched off: also switch off the motor protection switch and cut-off.
➤ Check the readings on the voltmeter and ammeter.
If deviations are found: contact an authorised electrician.
7
Initial Start-up
7.10 Activating the battery trickle charging
76
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E