Chicago Pneumatic CPS 750, Instruction Manual, Page: 65 / 94

Instruction Manual
1310 3012 02 65
CPS
4.13.1 Electrolyte
Electrolyte in batteries is a sulphuric acid solution in distilled water.
The solution must be made up before being introduced into the battery.
4.13.2 Activating a dry-charged battery
•
Take out the battery.
•
Battery and electrolyte must be at equal temperature above 10 °C (50 °F).
•
Remove cover and/or plug from each cell.
•
Fill each cell with electrolyte until the level reaches the mark on the battery. If there is no mark on the
battery, the level must be above the plates for at least 10 mm (0.4 in) to 15 mm (0.6 in).
•
Rock the battery a few times so that possible air bubbles can escape; wait 10 minutes and check the
level in each cell once more; if required, add electrolyte.
•
Refit plugs and/or cover.
•
Place the battery in the compressor.
4.13.3 Recharging a battery
Before and after charging a battery, always check the electrolyte level in each cell; if required, top up with
distilled water only. When charging batteries, each cell must be open, i.e. plugs and/or cover removed.
Apply with preference the slow charging method and adjust the charge current according to the following
rule of thumb:
Battery capacity in Ah divided by 20 gives safe charging current in Amp.
4.13.4 Battery maintenance
•
Keep the battery clean and dry.
•
Keep the electrolyte level above the plates or at the indicated level. Level above plates at least 10 mm
(0.4 in) to 15 mm (0.6 in). Top up with distilled water only.
•
Keep the terminals and clamps tight, clean, and lightely covered with petroleum jelly.
Read the safety instructions carefully.
Always pour the sulphuric acid carefully into the distilled water; never pour the water
into the acid.
Use a commercial automatic battery charger according to its manufacturer’s
instructions.