10.4.9.2 Battery checking and care
Even so-called 'maintenance-free' batteries need a degree of care to obtain their maximum opera‐
tional life.
The outside of the battery and the terminals should be cleaned regularly with a soft cloth. This avoids
current leaks and minimises the discharge rate.
Material Terminal grease
Distilled water
Cleaning cloth
Protective gloves
Eye protection
Precondition The machine is shut down.
The machine is standing level.
The machine is fully vented, the pressure gauge reads 0 bar.
Machine is cooled down.
➤ Open the left-hand door.
1. Clean the casing and terminals.
2. Lightly grease the terminals to prevent corrosion.
3. Check that connections are tight and tighten if necessary.
Check the battery electrolyte level:
The acid quantity is generally sufficient for the life of the battery. Nevertheless, the fluid level should
be checked annually. The level should be up to the mark, 1 cm above the plates.
Replace the battery immediately if the casing leaks.
WARNING
Battery destruction!
Topping up with pure acid will increase the electrolyte concentration and can destroy the battery.
➤ Top up only with distilled water.
➤ Check the electrolyte level.
If the level does not reach the mark -
➤ top up with distilled water.
➤ Close the door.
Winter operation:
Batteries are particularly stressed in winter. Only a fraction of the normal starting energy is available
at low temperatures.
10 Maintenance
10.4 Engine
No.: 9_9425 01 E
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
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