Doosan DL200, Operation And Maintenance Manual

Page: 214 / 256

OP000509 Inspection, Maintenance and Adjustment
4-70
12,000 HOUR / SIX YEAR
SERVICE
Hose In-service Lifetime Limit (European
Standard ISO 8331 and EN982 CEN)
European regulations state that the in-service life of any
hydraulic hose may not exceed six years.
DOOSAN
recommends the following:
• Hoses at the customer premises cannot be stored
more than 2 years before being discarded or
installed on a machine.
• In-service lifetime of hoses fitted on a machine
can never exceed 6 years, but replace hoses
described in “Replace Pipes and Hoses” on
page 4-65, every year. Always replace hoses
having exceeded the allowed in-service lifetime
irrespective of the external appearance/wear.
• Always store hoses in a dark place at a maximum
of 65% relative humidity, between 0°C (32°F) and
35°C (95°F) but as close as possible to 15°C
(59°F) and away from copper, manganese or tube
generating Ozone.