Instruction manual

14 P1885E/EN 2008-04 86c_Wartung en bedingt.fm, 02.04.2008
Maintenance
6
6.1.1 Calculating a customer-specific maintenance plan
A service interval W(1,2,3) depends on the following factors:
T2, S and VS are variable factors and can differ depending on the specific application.
Example for service interval W2:
After 500,000 rundowns (V),
a specific rundown time of 1.8 seconds (T1)
with an actual fastening time of 3 seconds (soft joint) and
3 completed shifts per day and 750 rundowns per shift:
You have to carry out the maintenance measures marked W2 after an operating time of
133 days.
Factor Value assumed in
6.1, "Maintenance
plan"
Description
V V1 = 100,000
V2 = 500,000
V3 = 1,000,000
Number of rundowns after a maintenance measure is pre-
scribed by Cooper Power Tools.
T1 1.8 seconds Specific rundown time, measured in life and endurance tests.
T2 2 seconds Actual rundown time, depending on the hardness of the joint.
S 1; 2; 3 Number of shifts per day.
VS 750 Number of rundowns per shift.
W123,,()
VT
1
×
T
2
S× VS×
------------------------------=
W2
500000 1 8,×
33× 750×
---------------------------------=133
days()=