6
Major service interval guide.
Work impact considerations
Severity index
Wide M Wide L
Jack-knife boom pole. 15% N/A
High dust and sand environment. 10% 10%
High salinity environment. 10% 10%
Aluminium fence installed. 5% 5%
Mobile pole support installed. 15% 15%
Ambient temperature above 40
o
C or below 0
o
C. 5% 5%
Operation regularly interrupted by safety beam circuit trigger. 15% 15%
Operation regularly interrupted by the Emergency Stop circuit trigger. 15% 15%
Speed set to above 50%. 15% 15%
Safety overload force level set to above 50%. 10% 10%
0
100.000
200.000
300.000
cicli di manovr e
400.000
500.000
10 20 30 40 50
60 70 80 90 100
Severity index (%)
manoeuvre cycles
Using the above table, total up the applicable work impact consider-
ations to calculate the site’s severity index. Apply the totalled up se-
verity index % to the graph on the right to estimate the total expected
number of operations before first major service.
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