Zetor PROXIMA PLUS 90 2012, Operator'S Manual

Page: 29 / 212

28
GETTING TO KNOW THE TRACTOR
E120 G121 E122
CONTROL OF AIR CIRCULATION IN
THE CABIN (D)
a - Ambient (outdoor) air is sucked
through the filters into the cabin; suck-
ing of air from inside is closed;
b - Air is sucked from inside and ex-
hausted to the cabin again (inner cir-
culation for fast adjustment of tem-
perature in the cabin).
Intake of air from outdoor is com-
pletely closed and there is no
overpressure in the cabin to pre-
vent penetration of non-filtrated
air into the cabin!
Use this control position for nec-
essary period only!
CORRECT FUNCTION OF THE
HEATING AND A/C SYSTEMS
It is necessary to create overpressure in
the cabin for correct function of heating
or air-conditioning. Therefore it is rec-
ommended to close all windows, doors
and upper cover.
FAST WARMING-UP OF THE CABIN
SPACE
Proceed as follows:
1. Turn the heating valve control (A) to
the right (fully open heating valve).
2. Set the air circulation in the cabin
control (D) to position of inner recir-
culation.
3. Select the desired speed of the fans
(position 1, 2, 3) using the fan control
(B).
4. Adjust angles of the air outlets to pre-
vent direct blowing of persons in the
cabin.