Nilfisk Alto 05211F Manuale Utente

   Operator's Manual - SCRUBTEC 770 / 784 / 795

Charging the batteries in an area without adequate ventilation could 
result in an explosion.  To prevent an explosion, charge the batteries 
only in an area with good ventilation.

Lead acid batteries generate gases which could explode.  Keep 
sparks and fl ames away from batteries.  NO SMOKING!
To charge the batteries, follow this procedure:
1.  Make sure the key switch is in the “OFF” position.
2.  Before charging the batteries, the battery compartment needs to 

be vented.  To vent compartment, tip up the recovery tank until 
it locks in the open position (see fi gure #8).  To close the tank, 
pull up on the arm and then slowly lower the tank to the closed 
position.

Before raising tank, be sure tank is empty.

Do not operate or perform maintenance on the machine while the 
recovery tank is in the open position.  The tank can be accidentally 
bumped and it may slam shut.
3.  Put the charger on a fl at surface.  Make sure the vents on the 

sides are at least two inches away from walls and other objects.  
Make sure there are no objects near the vents on the bottom of 
the charger.

4.  Disconnect the battery pack connector from the batteries.
5.  Connect the DC connector on the charger to the battery pack 

connector.  See fi gure #8A.

6.  Connect the battery charger AC cord located at the rear of 

the machine to a 10 amp (min) 230V properly grounded wall 
receptacle.

7.  Observe indicator light to ensure the charging process has 

started.  Flashing light(s) indicates that the batteries are being 
charged.  Steady on green light indicates the batteries are fully 
charged.

NOTE:  Make sure you plug into a circuit that is not loaded by other equipment.  Wall breakers may be tripped and no charge will 
occur.

Never charge a GEL battery with an unsuitable battery charger.  Carefully follow the instructions given by the manufacturer of the 
batteries and battery charger.
NOTE: To prevent permanent damage to the batteries, avoid their complete discharge.  Never leave the batteries completely 
discharged, even if the machine is not being used.  When recharging the batteries, keep the recovery tank open.  After every 20 
recharging cycles, check the level of the electrolyte and if necessary top off with distilled water.