Sunlight HydroSave PzS Series User manual

Risk of explosion and fire.
Caution: Metal parts of the battery are
always under voltage. Do not place tools
or other metal objects on the battery!
Avoid short circuits!
Electrolyte is highly corrosive.
Batteries and cells are heavy.
Ensure secure installation!
Use only suitable handling equipment e.g.
lifting gear in accordance with VD 3616.
Dangerous voltage!
Batteries with this symbol can be recycled.
Treat batteries as special waste.
Do not mix them with other industrial
or household waste. Recycling can be
achieved through a recognized company
for battery recycling or by returning them
to the manufacturer, depending on the
agreement you have made.
Instructions for Use
Motive Power (Traction) Batteries with Positive Tubular Plates
Pz and PzB, Hydro ave Batteries
Read the instructions carefully and place
them close to the battery.
Work on batteries to be carried out by
skilled personnel only!
Disregarding the operation instructions, repair with non-original parts or using additives for the electrolyte will render
the warranty void.
Use protective glasses, protective gloves
and apron when working on batteries.
Pay attention to the accident prevention
rules as well as EN 50272-3 and
EN 50110-1.
No smoking!
Do not expose batteries to naked flames,
glowing embers or sparks, as it may
cause an explosion.
Do not expose batteries to naked flames,
glowing embers or sparks, as it may
cause an explosion.
Clothing contaminated by acid should be
washed in water.
afety Instructions
1. Nominal capacity C5 : See battery label
2. Nominal voltage : 2.0 V x number of cells
3. Discharge current : C5/5h
4. Final discharge voltage : 1.7 V x number of cells
Rating Data
5. Nominal electrolyte density*: 1.29 g/ml at 30°C
6. Rated temperature : 30°C
7. Nominal electrolyte level : upper step of plug**
* wi be reached within the first 10 cyc es
** see picture in point 3.1
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1. Commissio i g Filled a d
Charged Batteries
For commissioning of unfilled batteries see separate instructions.
The battery should be inspected to ensure it is in perfect condition.
The charger cables must be connected to ensure a good contact,
paying attention to the polarities. Otherwise battery, vehicle or
charger could be damaged. The tigheting torque for all the
connector bolts must be 25±2 N·m.
The level of the electrolyte must be checked after removing the
plugs. Plugs should be removed only by using the appropriate tool
to avoid damage. n case aqua filling plugs are installed the use of
the appropriate tool helps to avoid hitting the floating body and
cause damage in the floating mechanism . f the level is below the
top of the separator, it must first be topped up to the upper level
of the separator with purified water (D N 43530 part 4). The battery
is then charged as in point 2.2. After charging, the electrolyte
should be topped up to the nominal level with purified water.
2. Operatio
The standard which applies to the operation of traction batteries
is EN 50272-3: “Safety requirements for secondary batteries and
battery installations. Traction batteries” and provides requirements
on safety aspects associated with the installation, use, inspection,
maintenance and disposal of batteries.
2.1 Discharging
Be sure that all ventilation openings of the battery container,
compartment or cover are not blocked, so suitable ventilation of
the battery is achieved. Do not connect or disconnect the battery
socket under discharging or charging. To achieve battery's
optimum life, operating discharges of more than 80% of the rated
capacity should be avoided (deep discharge). This corresponds to
an electrolyte density of 1.14 g/ml 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 proce-
dures in accordance with D N 41773 and D N 41774 are permitted.
Connect only the battery assigned to a charger, suitable for the
size of battery, in order to avoid overloading of the electric cables
and contacts and prevent unacceptable gassing and escaping of
electrolyte from the cells. n the gassing stage the current limits
given in EN 50272-3 must not be exceeded. f the charger was not
purchased together with the battery it is best to have its suitability
checked by the charger’s supplier. When charging, proper
provision must be made for venting of the charging gases. The
removable covers provided for the battery must be removed prior
to charging so that the explosive mixture of gases loses its
flammability due to adequate ventilation. 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). Then switch on the
charger. When charging, the temperature of the electrolyte rises
by about 10°C, so charging should only begin if the electrolyte tem-
perature is below 45°C. The electrolyte temperature of batteries
should be at least +10°C before charging otherwise a full charge
will not be achieved. A charge is finished when the electrolyte den-
sity and the battery voltage have remained constant for two hours.
Batteries fitted with airlift system:
Please verify that the airlift system is in good operating condition
before beginning the recharge process. Do not recharge a battery
with a damaged system. Contact your charger’s supplier for further
details. The air pipe should never be removed during charging.
2.3 Equalizing Charge
Equalizing charges are used to safeguard battery's life and to main-
tain its capacity. They are necessary after deep discharges,
repeated opportunity recharges and charges to an U characteris-
tic curve. Equalizing charges are carried out following normal
charging. The charging current must not exceed 5 A/100 Ah of
rated capacity (End of charge: when there is no further increase of
cell voltage within 2 hours). Watch the temperature!!
2.4 Temperature
An electrolyte temperature of 30°C is specified as the rated
temperature. Higher temperatures shorten the life of the battery,
whilst lower temperatures reduce the available capacity. The upper
temperature limit is 55°C and is not acceptable as an operating
temperature.
2.5 Electrolyte
The rated electrolyte density is related to a temperature of 30°C
and the nominal electrolyte level in the cell in fully charged condi-
tion. Higher temperatures reduce the electrolyte density, whilst
lower temperatures increase it. The temperature correction factor
is -0.0007 g/ml per °C, e.g. an electrolyte density of 1.28 g/ml at
45°C corresponds to an electrolyte density of 1.29 g/ml at 30°C.
3. Mai te a ce
3.1 Daily
Charge the battery after every discharge. Towards the end of
charge the electrolyte level should be checked and if necessary
topped up to the specified level with purified water.
Do not fill the battery with electrolyte. The electrolyte level must
not fall below the anti-surge baffle or the top of the separator.
n the case of HydroSave batteries with electrolyte level sensors,
the illuminated lamp should be observed daily. See relevant
instructions of electrolyte level sensor. Fill-in with water immedi-
ately after the lamp blinks red. Check the electrolyte level (visual
inspection by opening the vent plug or by the position of the float
indicator of the aquamatic plug) and top-up with demineralised
water at the end of the charge. Τhe level sensor monitors a
selected pilot cell. This means that attention should be paid to the
rest of the cells according to the additional instructions under "3.3
Monthly Maintenance".
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4. Care of the Battery
The battery should always be kept clean and dry to prevent track-
ing currents. Any liquid in the battery tray must be cleaned and dis-
posed of as prescribed. Damage to the insulation of the tray should
be repaired after cleaning, to ensure that the insulation value com-
plies with EN 50272-3 and to prevent tray corrosion. f it is neces-
sary to remove cells, it is recommended to call our Service Dept.
5. Storage
f batteries are taken out of service for extended periods of time,
they should be stored in a fully charged condition in a cool, dry
room (temperature from 0°C to 30°C). To ensure that the battery
is protected from sulphation, the following charging methods are
available:
1. a monthly equalizing charge as in point 2.3
2. float charging at a charging voltage of 2.27 V x the number
of cells. The storage time should be taken into account
when considering the life of the battery.
6. Malfu ctio s
f malfunctions are found on the battery or the charger, our Service
Dept. should be notified immediately. The measurements taken in
point 3.3 will facilitate fault finding and their elimination. A service
contract with us is a good way to detect and prevent potential
problems in advance.
3.2 Weekly
Visual inspection after recharging for signs of dirt and any mechan-
ical damage should be made. f the battery is charged regularly with
an U characteristic curve an equalizing charge must be carried out
(see point 2.3).
3.3 Monthly
At the end of the charge, the voltages of all cells should be meas-
ured and recorded, with the charger switched on. After charging
is completed, the electrolyte density and temperature in all cells
should be measured and recorded. f significant changes from
earlier measurements or differences between the cells are found,
further testing and maintenance by our Service Dept. should be
requested.
3.4 Annually
n accordance with EN 1175-1, at least once per year, the insulation
resistance of the truck and the battery must be checked by an
electrician. The tests on the insulation resistance of the battery
must be conducted in accordance with EN 1987-1. The insulation
resistance of the battery shall be at least 50Ω multiplied by the
nominal battery voltage, in compliance with EN 50272-3. For
batteries up to 20 V nominal voltage the minimum value is 1000 Ω.
Batteries fitted with airlift system:
During the annual maintenance, check the correct operation of
the air pump.
8. Automatic Water Filli g System
8.1 Benefits
Use of the Automatic Filling System ensures that the battery's
electrolyte level is maintained at its nominal value. The charging
gasses escape through ventilation openings of the refilling plugs.
8.2 Operation
Each cell is equipped with an automatic water filling plug that con-
sists of a valve and a float and controls the topping up process to
maintain the optimal electrolyte level. The valve allows the flow of
water into each cell and the float seals the valve when the correct
electrolyte level has been reached. The filling plug shows a white
dot, if the float has sealed the valve. The electrolyte density may be
measured by opening the plug cover and inserting the hydrometer
probe through the plug’s relevant opening. For a fault-free operation
of the water refilling system, please consult the instructions below.
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7.1 Reduction of Vehicle Power
Damaged cell: After charging, the cell voltages should be above
2.1 V and the electrolyte density between 1.27 and 1.30 g/ml.
f a single cell voltage is below 2.0 V and its electrolyte density
below 1.20 g/ml, the cell should be considered damaged. n this
case, contact our Service Dept.
Damaged charger: f the electrolyte density of all cells after charg-
ing is below 1.27 g/ml, the charger may have a defect. Charge
again and check its functionality or contact our Service Dept.
Frequent electrolyte overspilling: Reduction of electrolyte density
may be caused by overspilling. Please consult the relevant points
of the present instructions of use for correct filling.
Damaged or loose connections between cells or at the battery’s
end poles: A loose inter-cell connection reduces the cell voltage
substantially, generating heat and destroying the connector and/or
the cell. Measure cell voltages under load (e.g. lifting system of the
forklift) and check all connections.
Damaged battery socket: Battery sockets may wear out by
mechanical abuse and excessive heat. Prompt replacement is
required.
7.2 Low Insulation Value due to Defective Battery
Container Coating
Mechanical impacts and/or excessive overspillage of electrolyte
may cause a low insulation value of the battery. n case the battery
tray needs repair or replacement contact our Service Dept.
7.3 High Temperature (>55°C) after Charging
During battery charging, temperature raises by 10°C. f it is more:
- at least one cell has a low voltage and the charger overcharges
the battery
- the charger is defected or has a defect setting of safety cut-offs.
Frequent overcharging reduces service life of the battery.
7.4 Battery Explosion
At the end of charging the battery emits hydrogen. To avoid risk of
explosion, the battery room has to be properly ventilated according
to EN 50272-3. No flames or sparks should be near the battery. For
better ventilation the cover of the battery compartment has to be
open during charging. n case of explosion, inspect all the battery
cells for structural damages and replace damaged cells. Contact
our Service Dept.
7.5 Fire in the Battery
All active parts in a battery are insulated for their life cycle. Due
to poor electrical contact of the terminal cables or inter-cell
connectors, mechanical wear out of the terminal cables or
creeping currents on top of the cells may cause intense heating or
even fire. Shut-off power immediately. After extinguishing the fire,
the battery has to be carefully inspected and damaged parts must
be replaced. Contact our Service Dept.
7. Diag osis a d Problem Solvi g

Y TEM UNLIGHT .A.
Headquarters
2 Ermou & Nikis Str., Syntagma Sq.
105 63 Athens, Attica, Greece
T [phone]
F [phone]
ervice Department
366 Tatoiou Street
136 73 Acharnes, Attica, Greece
T [phone]
F [phone]
Manufacturing Plant
Neo Olvio
672 00 Xanthi, Greece
T [phone]
F [phone]
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9. Airlift System
9.1 Benefits
The airlift system prevents stratification of the electrolyte in the bat-
tery cells and reduces charging times, reduces temperature in-
crease during charging, reduces water loss and reduces the
charging factor. The airlift system is essential in heavy duty appli-
cations with high operating temperatures.
9.2 Operation
The acid circulation is performed by air pressure, delivered in each
cell of the battery. For this function, a membrane pump in the
charger produces an air flow, which passes through hoses and
special plugs and is guided into each cell. The air supply is ad-
justed in accordance to the number of cells in the battery. Optimum
charging factor setting is 1.07.
9.3 Repair and Maintenance
f at the monthly electrolyte density check, some cells have lower
electrolyte density, the overall condition of the air lift tubing has to
be checked. Some chargers incorporate an alarm indication if the
system does not perform properly. Some chargers switch over to
the normal charging characteristic (charging factor 1.18 to 1.20), if
leaks are detected. Faulty parts have to be replaced only by origi-
nal parts to ensure correct function of the air lift system.
8.3 Manual or Automatic Connection
The battery should be topped up shortly before the end of charging
(1 - 2h) to achieve a good mixing with the electrolyte and the correct
level. Filling takes place, when the quick-coupling of the water tank
is connected to the quick-coupling of the battery.
- f manual connection is used, the battery should only be connected
to the water supply once per week to avoid overfilling.
- f the charger incorporates a watering function, the quick couplings
of the battery and the charger are connected before charging
and the water flow is controlled by the charger’s PCB board
which operates an electromagnetic valve.
8.4 Filling Time
The filling time depends on the battery's usage and its operating
temperature. t takes in average a few minutes and can be checked
by the plug’s white level indicator. After filling, the connection to
the water supply has to be closed.
8.5 Working Water Pressure
For a proper function of the automatic filling system, the water pres-
sure should be between 0.2 and 0.6 bar. f gravity is used, the dis-
tance between the upper edge of the battery and the lower edge
of the tank should be at least 2m.
8.6 Purity
The topping up water must be purified according to D N 43530-4.
The water used to refill the batteries must have a conductance of
not more than 30 μS/cm. The tank and pipes must be cleaned be-
fore operating the system.
8.7 Piping ystem on the Battery
The piping system to the individual battery cells must follow the
battery's electrical circuit. The system should not be modified in
any way otherwise serious safety or operation problems may arise.
8.8 Operating Temperature
Operating automatic water filling System is not allowed in areas
with an ambient temperature constantly below 0°C.
8.9 Flow Control (optional)
A flow indicator, built into the water supply pipe of the battery, pro-
vides visual checking of the filling process. During filling, the water
flow causes the built-in disc in the flow indicator to turn. When all
the plugs are closed, the disc stops, thus indicating that the filling
process is complete.
1 Water tank
2 Leve switch
3 Aqua fi ing point with manua va ve
4 Aqua fi ing point with automatic va ve
5 Charger
6 Fema e quick-coup ing
7 Ma e quick-coup ing
8 Ion exchange cartridge with
conductance meter
and automatic va ve
9 Connection
for tap water
10 Exit cab es