7.3.2. Check of the accumulator
Indicator of degree of state of charge and level of electrolyte of the unattended DELCO accumulator
Interpretation of the symbols applied on the label of the accumulator
| 1 – at service of the accumulator it is necessary to follow rules on to safety measures, stated in the operation manual, 2 – in the accumulator is available the corroding acid it is also necessary to be careful that acid did not spill from the accumulator, 3 – do not use naked flame about the accumulator, |
4 – during the work with the accumulator use goggles, 5 – you keep the accumulator in the place inaccessible for children, 6 – at utilization hand over the accumulator only in points intended for this purpose, 7 – do not throw out the accumulator together with household garbage, 8 – the gases emitted at accumulator charging are explosive |
It is necessary to make check of density of electrolyte in the accumulator each 3 months to define load ability of the accumulator.
Check is made by the densitometer. When determining density of electrolyte it is necessary to consider accumulator temperature. At a temperature of electrolyte below 15 °C on each 10 °C less than this temperature subtract value 0,007 from the measured density. For each 10 °C over 15 °C add 0,007.
Electrolyte density in the accumulator has to be in the following limits:
|
Temperature
|
It is above 25 °C
|
It is below 25 °C
|
| Full charge |
1,210 – 1,230
|
1,270 – 1,290
|
| Charging for 70% |
1,170 – 1,190
|
1,230 – 1,250
|
| Discharged |
1,050 – 1,070
|
1,110 – 1,130
|
Measure density of electrolyte in each can. The difference in density 0,04 or more between two any banks indicates loss of electrolyte or sulphation of plates.
If electrolyte density between two any banks differs more than on 0,04, the accumulator is subject to replacement. If density of electrolyte is lower demanded, but identical in all banks, the accumulator needs to be charged.
In case of use of the unattended accumulator the condition of the accumulator can be checked only the voltmeter. In accumulators with the built-in indicator of degree of state of charge the condition of the accumulator is determined by color of the indicator. Green color of the indicator corresponds to a full charge of the accumulator. Black color of the indicator indicates the need of accumulator charging. Light or bright yellow color of the indicator testifies to the low level of electrolyte in the accumulator (see rice. Indicator of degree of state of charge and level of electrolyte of the unattended DELCO accumulator).
On the accumulator there is a sticker with the warning symbols (see rice. Interpretation of the symbols applied on the label of the accumulator).