7-16 BA 35203_04 * 3.0 * 35203_04_07_Wartung.fm
7 Maintenance
Important information on operation with biodegradable oils
• Use only the tested and approved biodegradable hydraulic fluids
– see “Fluids and lubricants” on page 7-12. Always contact the
manufacturer for the use of products other than those that have been
recommended. In addition, ask the oil supplier for a written declaration
of guarantee. This guarantee is applicable to damage occurring on the
hydraulic components that can be proved to be due to the hydraulic
fluid.
• If biodegradable oil is topped off, only use biodegradable oil of the
same variety. In order to avoid misunderstandings, a label providing
clear information is located on the hydraulic oil reservoir (next to the
filler inlet) regarding the type of oil currently used! Replace missing
labels!
The joint use of two different biodegradable oils can affect the quality of
one of the oil types. Therefore, make sure the remaining amount of
initial hydraulic fluid in the hydraulic system does not exceed 8 % when
changing biodegradable oil (manufacturer indications).
• Do not add mineral oil. The content of mineral oil should not exceed
2% by weight in order to avoid foaming problems and to ensure
biodegradability of the biodegrable oil.
• For operation with biodegradable oils, the same oil and filter
replacement intervals apply as to mineral oils
– see “Maintenance plan” on page 7-3.
• The condensate in the hydraulic oil tank has to be drained by an
authorised specialist workshop every 500 hours of operation; and in
any case before the cold season starts.
The water content must not exceed 0.1 % by weight.
• The instructions in this Operator’s Manual concerning environmental
protection are also valid for the use of biodegradable oil.
• If additional hydraulic attachments are installed or operated, use the
same type of biodegradable oil for these attachments to avoid mixtures
in the hydraulic system.
Subsequent change from mineral oil to biodegradable oil must be
performed by an authorised service centre or by a dealer.
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