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 Instructions for use Fiamm Motive Power Water Less

®

 / Water Less

®

 20

ENGLISH

 Rating Data

1.  Nominal capacity C

See type plate

2.  Nominal voltage: 

2.0 V x No of cells

3.  Discharge current 

C

5

 /5h

4.  Nominal S.G. of electrolyte*:

  Type PzM / PzMB: 

1.29 kg/l

5.  Rated temperature: 

30°C

6.  Nominal electrolyte level: 

up to electrolyte level mark ”max.”

* Will be reached within the first 10 cycles.

 1.  Commissioning filled and charged batteries

For commissioning of unfilled batteries see separate 

instructions! The battery should be inspected to ensure 

it is in perfect physical condition. The charger cables must 

be connected to ensure a good contact, taking care that the 

polarity is correct. Otherwise battery, vehicle or charger could 

be damaged.

For the assembly of harness cables or in case of the replacement 

of a connector the following torque must be applied:

       M 10 perfect connector 

25 ± 2 Nm

In case the interval between delivery (see manufacturing date 

on type plate) and commissioning is longer than 8 weeks or 

the electrolyte level sensor is indicating low electrolyte level 

(see table point 3.1.1), the electrolyte level has to be checked. 

If the battery is equipped with a single point water topping up 

system (optional), for the removal of the BFS plugs only the 

appropriate tool must be used. Otherwise the floats of plugs 

may be permanently damaged, which can cause overflow 

of the cells. If the electrolyte level is below the top of the 

separator, it must first be topped up to this height with 

purified water (IEC 62877-1 : 2016). Then the battery can be 

charged as in item 2.2.

The electrolyte should be topped up to the specified level 

with purified water. Fiamm Motive Power Water Less

®

/ Water 

Less

®

 20 batteries are fitted with an electrolyte level indicator.

  2.   Operation

EN 62485-3 “Traction batteries for industrial trucks” is the 

standard which applies to the operation traction batteries in 

industrial trucks.

 2.1  Discharging

Be sure that all ventilation holes are not sealed or covered.

Electrical connections (e.g. plugs) must only be made or 

broken in the open circuit condition. To achieve the optimum 

life for the battery, operating discharges of more than 80% of 

the rated capacity should be avoided (deep discharge). This 

corresponds to an electrolyte specific gravity of 1.14 kg/l at 

30°C at the end of the discharge. Discharged batteries must 

be recharged immediately and must not be left discharged. 

This also applies to partially discharged batteries.

 2.2  Charging

Only direct current must be used for charging.

All charging procedures in accordance with EN 41773-1 and 

EN 41774 are permitted. Only connect the battery assigned 

to a charger, suitable for the size of battery, in order to avoid 

overloading of the electric cables and contacts, unacceptable 

gassing and the escape of electrolyte from the cells. In the 

gassing stage the current limits given in EN 62485-3 must 

not be exceeded. If the charger was not purchased together 

with the battery it is best to have its suitability checked by 

the manufacturers service department. When charging, 

proper provision must be made for venting of the charging 

gases. Doors, battery container lids and covers of battery 

compartments must be opened or removed. During the 

charge the battery must be removed from the closed battery 

compartment on the truck. The ventilation must comply to 

EN 62485-3 standard. The vent plugs should stay on the cells 

and remain closed. With the charger switched off connect up 

the battery, ensuring that the polarity is correct. (positive to 

positive, negative to negative). Now switch on the charger. 

When charging the temperature of the electrolyte rises by 

about 10°C, so charging should only begin if the electrolyte 

temperature is below 45°C.

 

•  Pay attention to the operation instruction and 

 

  fix them close to the battery. 

 

•  Work on batteries to be carried out by skilled 

 

  personnel only!

 

•  Use  protective  glasses  and  clothes  when 

 

  working on batteries. Pay attention to the 

 

 accident prevention rules as well as 

 

  EN 62485-3 and EN 50110-1.

 

•  No smoking!

 

•  Do  not  expose  batteries  to  naked  flames, 

 

  glowing embers or sparks, as it may cause the 

 

  battery to explode.

 

•  Acid splashes in the eyes or on the skin must be 

 

  washed with water. In case of accident consult 

 

  a doctor immediately!

 

•  Clothing  contaminated  by  acid  should  be 

 

  washed in water.

 

•  Risk of explosion and fire, avoid short circuits! 

 

•  Caution: Metal parts of the battery are always 

 

  live. Do not place tools or other metal objects 

 

  on the battery!

 

•  Electrolyte is highly corrosive.

 

•  Batteries and cells are heavy.

 

•  Ensure  secure  installation!  Use  only  suitable 

 

  handling equipment e.g. lifting gear in 

 

  accordance with VDI 3616.

 

•  Dangerous electrical voltage!

 

•  Pay attention to the hazards that can be caused 

 

  by batteries.

Traction batteries with positive tubular plates type PzM / PzMB

Ignoring the operation instructions, repair with non-original parts or using additives for the electrolyte will render the 

warranty void.

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