Service Instruction Manual

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: [phone]
FAX: [phone]
125/130
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
8.3.1 STEP 1: Operating hours per inspection interval, T
i
60
2
∗
∗
∗
∗
∗
=
V
JTNH
T
i
- H = average hoisting height [m]
- N = number of work cycles per hour [cycles/h]
- T = daily working time [h]
- V = hoisting speed [m/min]
- J = working days during inspection interval [days]
8.3.2 STEP 2: Actual load spectrum factor per inspection interval, K
mi
Load spectrum factor can be calculated using following table:
Load % Lifting time % Factor k
3
Load spectrum
factor
100 % * 1 =
+ +
80 % * 0.51 =
+ +
60 % * 0.22 =
+ +
40 % * 0.06 =
+ +
20 % * 0.01 =
+ +
0 % * 0 =
= =
Sum: 100% Sum:
Divide by 100: /100 =
Load spectrum factor, K
mi
:
8.3.3 STEP 3: Partial duration of service, S
i
[hours]
When the load spectrum factor of inspection interval K
mi
and the operating hours per inspection interval T
i
are identified, the Partial duration of service, S
i
can be calculated as follow:
imii
TKS
∗
∗
=
2.1
8.3.4 STEP 4: Actual duration of service, S [hours]
Actual duration of service can be calculated when the earlier partial duration of inspection intervals is
known.
i
SSSS
+
+
+
=
...
21