Zetor Proxima Series Operator's Manual page 11

ELECTRICAL INSTALLATION
54. No additional interventions
into the tractor
equipment (connection of other
electrical appliances) are allowed
because of its
overloading!
55. The values of electrical installation
are:
Nominal voltage
Ground minus pole
Using of starting trucks or starting aid
devices with different voltage or polarity
causes serious failures of tractor.
56. It is necessary to be careful when
manipulating with the battery and to
avoid short circuits. Turn off the battery
switch at tractors equipped with this
switch when manipulating
battery.
57. Tractors must not be run with
disconnected battery, because serious
failure of tractor could occur.
SAFETY INSTRUCTIONS FOR USERS
electrical
possible
12 V =
( - ) pole
with the
10