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 cloths
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 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 fluid 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 access 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_6975 00 E
Service Manual Screw Compressor
M135 SIGMA CONTROL MOBIL
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