DEMAG DC-Com 1 Operating Instructions Manual page 67

Lifting and lowering
Operating time per day
Days per inspection interval
Tab. 45
Calculation
10 • 4 • 8 • 250
T =
i
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
Tab. 47
Adding the load spectrum modules k
Thus, the actual duration of service amounts to S [h] = k
● 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
From To T value
i
[h]
3.1.- 30.12.- Read 334
3.1.- 30.12.- Estimated 333,3
Tab. 48
60 • 4
L Load
together results in the load spectrum factor k
m
Load [%] km factor
full 3/4 1/2 1/4
5 10 20 15
0,05 0,042 0,025 0,002
5 10 20 15
0,05 0,042 0,025 0,002
(2+2) m/cycle = 4 m/cycle
8 h/day
250 days/inspection interval
t
x T x f =
mi i
Load spec‐ Actual dura‐
trum factor tion of serv‐
none k f
mi
50
0,119 1,1 43,72
-
50
0,119 1,2
-
Time
= 0,119
mi
Theoretical Remaining
duration of use
ice service
Use
S D [h] Group D - S
[h] of mech. [h]
800/1Am 756,28
47,6 800/1Am 752,4
67