Nussbaum HF 3S 12000, Operating Manual

Page: 33 / 64

OPI-POWER LIFT HF 3S 12000-V1.0-EN 33
Time frame
Maintenance
type position
Person in
charge
Maintenance plan
Annually
1
12
11
10
9
8
7 6 5
4
3
2
1 x / 12
Trained ser-
vice personnel
Hydraulic hose lines
Storage and duration of use
Excerpt from DIN20066:2002-10
• For permitted loading, hoses undergo a natural
change. This limits the duration of use.
• Improper storage, mechanical damage and unper-
mitted loads are the most frequent cause of break-
downs.
• The duration of use of a hose line including any stor-
age time should not exceed six years.
Hose lines are to be replaced if/when,
• damage to the outer coating up to the insert (chafe
marks, cuts, cracks)
• the outer coating becomes brittle (crack formation)
• deformation from the natural shape in the depres-
surized and pressurized conditions
• leakage
• damage or deformation of the mounting fixture
• meandering of the mounting fixture
• the lifetime has been exceeded
Repair of the hose line using the implemented hose /
mounting fixture is not permitted.
Extending the replacement intervals given in the
guideline is possible if the inspection for safe-work con-
dition is done in adjusted, shortened time frames, if re-
quired and by competent personnel.
If there is an extension of the replacement interval, no
situation may occur which could result in injury of em-
ployees or other personnel.
Annually
1
12
11
10
9
8
7 6 5
4
3
2
1 x / 12
Trained ser-
vice personnel
Excerpt from BGR237:
Specifications for the hydraulic hose lines.
Normal specification:
Recommended exchange intervals:
6 years (operation duration including max. 2 years
storage time).
Increased demands e.g. by
• Increased usage times e.g. multi-shift, short cycle
times and pressure impulses.
• Increased exterior and interior (due to media) influ -
ences which significantly reduce the lifetime of the
hose lines.
Recommended exchange intervals:
6 years (operation duration including max. 2 years
storage time)