5-18 BA 35101/02/03 EN – Edition 1.0 * 35101_02_03b510.fm
Maintenance
5.8 Checking hydraulic pressure lines
Safety instructions regarding pressure line checks
Caution when checking hydraulic lines, especially when searching for leaks.
Hydraulic oil escaping under high pressure can penetrate the skin and cause
serious injuries.
☞ Always consult a doctor immediately, even if the wound seems insignificant
– otherwise serious infections could set in!
☞ Always observe the following instructions:
• Retighten leaking screwed fittings and hose connections only when the
system is not under pressure; i.e. release the pressure before working
on pressurised lines!
• Never weld or solder damaged or leaking pressure lines and screw con-
nections. Replace damaged parts with new ones!
• Never search for leaks with your bare hands, but wear protective gloves!
• Have damaged flexible lines replaced by authorised workshops only!
The entrepreneur/owner of the machine must ensure that flexible lines are replaced in
appropriate intervals, even if no safety-relevant defects can been detected on the flexible
line.
Flexible lines must be inspected by an expert (competent person) before the first commis-
sioning, and then at least once a year for safe working condition.
• Leakages and damaged pressure lines must be immediately repaired or replaced by an
authorised workshop or after-sales staff.
This not only increases the operating safety of your machine but also helps to protect
the environment
• Replace hydraulic hoses every 6 years from the date of manufacture, even if they do
not seem to be damaged
In this respect, we recommend that you observe all the relevant safety regulations for
hydraulic lines, as well as the safety regulations regarding accident prevention and occu-
pational health and safety in your country. Also observe DIN 20066, part 5.
The date of manufacture (month or quarter and year) is indicated on the flexible line.
Example:
The indication “1 Q/10” means manufactured in the 1st quarter of 2010.
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