Heating System - New Holland T4.75F Operator's Manual

Heating system

Adjustable vents
On the roof inside the cab there are four adjustable vents
(1). The vents can be adjusted independently to direct hot
or cold air on the windscreen and side windows inside the
cab. To open, press on one side and turn the vent to direct
the air flow where required.
Air re-circulation vents
Air may be selected from inside or outside the cab by
adjusting the side recirculation vents (1) which can be
placed in two positions:
• Vents closed: air is drawn from outside the cab through
the lateral filters. Fresh air drawn into the cab from
outside is always filtered.
• Vents open: the greater part of the air is drawn from
inside the air through the vents.
NOTE: With the fan in operation and doors, windows, and
recirculation vents closed, the pressure inside the cab is
greater than the external pressure. Consequently, air can
only enter the cab through the lateral filters, after suitable
filtering.
Ventilation and heating
By turning the temperature adjustment knob (1) counter
clock-wise (fully to the left), the circulation of hot air in the
cab is interrupted; by turning the knob clockwise (fully to
the right), maximum cab air temperature is selected. With
the electric fan (2) is possible change the quantity of air
leaving by the adjustable vents.
The electric fan switch is powered up when the starter key
is ON position.
A Electric fan OFF.
B Low speed.
C Medium speed.
D High speed.
3 - CONTROLS/INSTRUMENTS
3-4
1
MOIL13TR00497AA
2
MOIL13TR00498AA
3
MOIL13TR00499AA