SUNWARD SWDE200B - Troubleshooting Machine Problems; General Problem Shooting Guide

SWDE120A DOWN-THE-HOLE DRILLING RIG OPERATOR’S MANUAL BOOK
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Check the specific gravity of electrolyte;
Attention
The same as the above mentioned notices and relevant measures on special condition.
Attention
Don’t place metal object across the connecting posts to check the electricity currency of battery.
Check it by voltage meter or gravimeter
Attention: Always disconnect the cathode pole from ground at first and connect it at last.
【IMPORTANT】
Check the specific gravity of electrolyte after cooling down to air temperature rather than after
finishing operation.
Check the electrolyte specific gravity of each cell.
The lowest gravity limitation of the electrolyte depends on the temperature of the electrolyte.
The gravity should be controlled within the scope as the following table. If the gravity is lower
than the limitation, charge the battery.
Recommended Gravity Scope Corresponding to Electrolyte Temperature
Liquid
Temperat
ure
68
0
F
-4
0
F
20
0
C
-20
0
C
1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32
Gravity of Electrolyte
7.8.2 Battery Replacement
Your machine has two 12- voltage batteries with cathodes poles connected to ground.
If one of them does not work, replace it with a new one of same specification.
For example, don’t replace the battery that needs not maintenance with the one need maintenance.
Because the specification is different, their charging speed would be different. This difference
would result in over loading and invalidity of the other battery.