Zetor 3321 SUPER, Operator'S Manual

Page: 170 / 233

169
ELECTRICAL INSTALLATION
A 194 A 195
BATTERY
Battery is located behind the front mask
of bonnet and is accessible after re-
moving the side shields. Battery switch
is assembled as an option. Battery
switch is located on the right hand side
of engine compartment.
If the tractor is out of operation
for longer period of time, it is
necessary to change the battery
at least once in three month
because of the battery selfdis-
charging and the spacing current
of AEV warning lights breaker. It
is recommended to disconnect
the battery by means of the
battery disconnecting switch in
case the tractor is put out of
action.
BATTERY MAINTENANCE
Check the electrolyte level after each charging or minimally once per 6 month.
Add the electrolyte only by distilled water to be its level 5 mm above separators (A).
Add water basically before operation to assure good mixing of electrolyte. The
electrolyte density is; by charging to 1,28 g.cm
-3
that corresponds to 32
“
B
°
(in tropic
countries 1,23 g.cm
-3
i.e. 27
“
B
°
). Electrolyte might be frozen at discharged battery in
winter season and the battery will be destroyed (B). Never let battery in discharged
status. Clean battery terminals and grease it slightly by vaseline (every 100 hours in
summer season). Farther instructions are mentioned in the battery instruction
manual.
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