Nilfisk-Advance Advance SC750 ST

Service Manual: SC750, SC800, SC 750 ST, SC800 ST
Form Number 56043150 Page 49
Removal and Installation
Batteries
If the set of baeries has 50 or more cycles on them, do not put a new baery into the set. Either replace with all new
baeries or use a good used baery. As baeries age, their maintenance requirements change. As they age they usually
require longer charging me and a higher nish rate. The newer baery mixed in with old baeries will end up being
overcharged, which will cause it to fail prematurely.
WARNING!
Use extreme cauon when working with baeries. Sulfuric acid in baeries can cause severe injury if allowed to contact
the skin or eyes. Explosive hydrogen gas is vented from the baeries through openings in the baery caps. This gas can
be ignited by any electrical arc, spark or ame. Do not install any lead-acid baery in a sealed container or enclosure.
Hydrogen gas from overcharging must be allowed to escape.
When servicing baeries
• Remove all jewelry
• Do not smoke
• Wear safety glasses, rubber gloves and a rubber apron
• Work in a well-venlated area
• Do not allow tools to touch more than one baery terminal at a me
• ALWAYS disconnect the negave (ground) cable rst when replacing baeries to prevent sparks.
• ALWAYS connect the negave cable last when installing baeries.
CAUTION!
Electrical components in this machine can be severely damaged if the baeries are not installed and connected properly.
Only Nilsk-Advance, a qualied electrician, or the baery manufacturer should install baeries.
1. Empty the recovery tank and p it up.
2. Turn the key switch o and disconnect the main baery pack connector.
3. Remove the baery cables.
a. Do not allow metal tools to connect between baery cables or posts.
b. Prevent cable ends from touching other cable ends or posts.
4. Remove baery.
5. Install baery.
6. Reconnect baery cables making sure that they are connected properly. Refer to the diagram molded into the
lower side of the recovery tank.