EP Equipment EPT20-15ET, Service Manual

Page: 121 / 128

110
REV. 09/2016
SERVICE MANUAL - BATTERY
B
3. Make sure that the "+" and "-" output termin-
als are not sulfated (with white salt).
-
-
-
Slight sulfation: clean top of the element with
a damp cloth.
Severe sulfation: the battery must be remov-
ed for powerful cleaning; the battery base
should also be cleaned.
Very severe sulfation (or a large amount
of electrolyte overflow): please contact the
after-sales service department as soon as
possible.
DO NOT arbitrarily discharge acidic wast-
ewater after cleaning, dispose such water
in accordance with national laws and
regulations!
B1-4 Storage
-
-
When the battery is not used for a long time,
the battery should be
fi lled up and stored in a
dry, frost-free space.
Regular equalizing charge may help extend
the service life of battery and ensure that the
capacity won't be reduced.
B1-5 Troubleshooting
-
-
Upon battery or charger failure, please prom-
ptly notify the after-sales service department.
Refer to battery failure analysis to facilitate
troubleshooting and elimination.
Battery Fault Analysis
Fault Negative Phenomena Cause Handling Methods
Insuf fi cient
Battery
Charge
1. Low static voltage
2. Low density, cannot meet
the requirements after being
charged
3. Short working time
4. When running, the instrume-
nt displays quick drop of
capacity 1. Charger voltage and current
are set too low
2. Insuf
fi cient initial charge
3. Charger failure
1. Adjust and repair the
charger
2. Battery supplemental
charge
3. Battery needs to be
replaced in severe situations
Electrolyte
has been
improperly
added to the
battery - In case of high intensity:
1. Electrolyte density is not
less than 1.300g/cm3 after
charging
2. Battery static voltage is
higher
3. Initial capacity is good, but
reduced after a period of use
4. Electrolyte is turbid
- Low density:
1. Electrolyte density is still
lower than the speci
fi ed
value after charging
2. Battery capacity is low
- Adding impure liquid:
1. Battery capacity is low
2. Electrolyte is turbid and of
abnormal color
3. Battery with severe self-
discharge
1. Initial adding of electrolyte
with excessive high or low
density
2. Liquid level reduces, adding
errors, failed to add pure water
in accordance with provisions,
but mistakenly adding dilute
acid
3. Initial adding of liquid is
impure (containing impurities
and with odor) 1. Replace the battery
electrolyte
2. Battery needs to be
replaced in severe situations