Case WX145 Operator's Manual page 103

SECTION 2
CONDITIONS FOR
INTENSITY
The air intakes ports are on the rear of the cab and
should neither be covered nor contaminated.
The filter element for outside air and the evaporator
slats must be clean.
The cab door and panes must be closed.
NOTE: the air in the air conditioner is not only
cooled but also dried, this avoids the steaming of
the cab panes and increases the operator comfort
and safety.
INSTRUCTION FOR A CORRECT USE
First of all to eliminate the heat stagnation.
Ventilate the cab then proceed with the cooling (with
windows and door closed).
Set for maximum cooling:
recirculation, maximum blower output, minimum
temperature, average air distribution.
When the inside room is sufficiently cooled, set the
normal cooling:
blower to level 1 or 2, wished temperature, air from
outside instead of recirculation.
Clearing off the window misting:
set air conditioning to ON, set full heating output, full
blower out put and direct air blow toward the win-
dow panes.
Preventing the glass panes misting:
with cold and moist weather, work with air condition-
ing activated, direct air flow toward the panes, tem-
perature and blower set according to needs.
Protection against exhausts and dust:
with air very dusty and with poisonous exhausts,
activate the air conditioner and space out the opera-
tion with periods of recirculation.
Temperature:
a temperature of 20-23 °C (68-73.4 °F) is the best,
minimum 18 °C (64.4 °F). If you have to dismount or
to climb into the cab with very hot weather, increase
the temperature to 25 °C (77 °F).
2-44
A GOOD COOLING REFRIGERATING AGENT R 134a
If handled in a wrong manner the refrigerating agent
R 134a can be dangerous. Therefore it is important
the following warning and directions are adhered to.
The refrigerating agent R 134a has a boiling point of
12 °C (53.6 °F).
Never expose any part of the air conditioning sys-
tem to flames or excessive heat, because of the risk
of fire or explosion and the production of phosgene
gas.
Never disconnect or disassemble any part of the air
conditioning system as escaping coolant can cause
frostbite.
If coolant comes into contact with your skin, use the
same treatment as for frostbite.
Warm the exposed area of skin with your hand or
lukewarm water 32 °C (89.6 °F), cover loosely with
a bandage to protect against infection and consult a
doctor immediately.
If coolant comes into contact with your eyes, rinse
them immediately with cold water for at least 5 min-
utes and consult a doctor immediately.
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