New Holland T4.75F Operator's Manual page 46

Active-Carbon Air Filter
DANGER
Chemical hazard!
When replacing the filter, pay attention to the sticker on the filter. For correct operation, the specified
anti-pollen or active carbon filter must be used and cannot be interchanged.
Failure to comply will result in death or serious injury.
NOTICE: the active carbon air filters do not guarantee full
protection against all pesticides. As a result, using them
does not relieve you from having to comply with the safety
rules recommended for using each single product.
Even though it is possible to pressurize the inside of the
cab to restrict entry of chemical vapours, you must any-
how always follow the safety procedures set down by the
chemicals manufacturer and use appropriate Personal
Protective Equipment (PPE).
The use of active carbon filters ensures a comfortable and
clean work environment and provides suitable protection
against dust. However, do not use active carbon air filters
3 - CONTROLS/INSTRUMENTS
when working in very dusty areas; they could get clogged
very quickly and become ineffective.
When replacing the active carbon filters at the end of the
job, return them to the original packaging, making sure
they are carefully sealed.
The filters must never be cleaned. Their durability is
stated on the label applied by the manufacturer. They
must in any case be replaced every 200 h or 2 years.
Old filters must be disposed of in compliance with the laws
in force.
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D0007A