Genie S-40 Maintenance Manual page 51

April 2016
10 Check the ambient air temperature and adjust
the specific gravity reading for each cell as
follows:
• Add 0.004 to the reading of each cell for
every 10° F / 5.5° C above 80° F / 26.7° C.
• Subtract 0.004 from the reading of each cell
for every 10° F / 5.5° C below 80° F / 26.7°
C.
Result: All battery cells display a specific
gravity of 1.277 or greater. The battery is fully
charged. Proceed to step 11.
Result: One or more battery cells display a
specific gravity from 1.218 to 1.269. The
battery is still usable, but at a lower
performance. The battery will need to be
recharged more often. Proceed to step 11.
Result: One or more battery cells display a
specific gravity from 1.217 to 1.173. The
battery is approaching the end of its life.
Proceed to step 11.
Result: The difference in specific gravity
readings between cells is greater than 0.1 OR
the specific gravity of one or more cells is less
than 1.177. Replace the battery.
11 Check the battery acid level. If needed,
replenish with distilled water to 1/8 inch / 3
mm below the bottom of the battery fill tube.
Do not overfill.
12 Install the vent caps and neutralize any
electrolyte that may have spilled.
Part No. 1268489
Quarterly Maintenance Procedures
S Booms • Z Booms
Maintenance Manual
39