DEMAG DC-Com 1, Operating Instructions Manual

Page: 67 / 116

Lifting and lowering (2+2) m/cycle = 4 m/cycle
Operating time per day 8 h/day
Days per inspection interval 250 days/inspection interval
Tab. 45
Calculation
T
i
=
10 • 4 • 8 • 250
60 • 4
Tab. 46
With operating time read: 334
With estimated operating time: 333,3
In the operating time as read/estimated above, the chain hoist has transported the following loads:
Fig. 35
B Loading L Load t Time
Tab. 47
Adding the load spectrum modules k
m
together results in the load spectrum factor k
mi
= 0,119
Thus, the actual duration of service amounts to S [h] = k
mi
x T
i
x f =
● With operating time read 0,119 x 334 x 1,1 = 43,72
● With estimated operating time 0,119 x 333,3 x 1,2 = 47,6
For classification in FEM group of mechanisms 1Am (see DC-Com data plate) with a theoretical duration of serv‐
ice of 800 hours (see table below) the hoist has a theoretical remaining duration of service of
● With operating time read 756,28 hours
● With estimated operating time 752,4 hours
Documentation:
Enter these values in your test and inspection booklet or crane installation test and inspection booklet. This entry
may appear as follows:
Date Operating hours Load [%] km factor Load spec‐
trum factor
Actual dura‐
tion of serv‐
ice
Use
Theoretical
duration of
service
Remaining
use
From To T
i
value
[h]
full 3/4 1/2 1/4 none k
mi
f S
[h]
D [h] Group
of mech.
D - S
[h]
3.1.- 30.12.- Read 334
5 10 20 15 50
0,119 1,1 43,72 800/1Am 756,28
0,05 0,042 0,025 0,002 -
3.1.- 30.12.- Estimated 333,3
5 10 20 15 50
0,119 1,2 47,6 800/1Am 752,4
0,05 0,042 0,025 0,002 -
Tab. 48
214
80
2 44/291
113
67