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 minimizes 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 psig.
The machine is cooled down.
➤ Open the left-hand door.
1. Clean the casing and terminals. Do not use a wire brush!
2. Lightly grease the terminals to prevent corrosion.
3. Check that the batteries and cable connections are properly seated and tighten if necessary.
Checking 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, 0.4 inches above the plates.
Replace the battery immediately if the casing leaks.
1.
Battery destruction!
Topping off with pure acid will increase the electrolyte concentration and can destroy the bat‐
tery.
➤ Top off only with distilled water.
2. Check the electrolyte level.
If the level does not reach the mark -
➤ Top off with distilled water.
➤ Close the door.
Winter operation
The batteries are particularly stressed in winter. Only a fraction of the normal starting energy is
available at low temperatures.
1.
Danger of batteries freezing!
Discharged batteries are subject to frost damage and can freeze at 14 °F.
➤ Check battery charge with a acid density tester.
➤ Recharge the batteries.
➤ Clean the battery terminals and apply terminal grease.
10 Maintenance
10.4 Engine maintenance
No.: 901765 05 USE
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
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