Krone BiG X 770-3 - Setting the Start-Up Safety Mechanism

Start-up – Spout extension
501
14.1.6 Setting the start-up safety mechanism
7
X
5
1
2
3
4
6
Fig. 433
The start-up safety mechanism must be set via the compression spring (6) to match the
mounted spout extension. This prevents the forces on the spout from becoming too great if the
start-up safety mechanism triggers.
The following table lists the setting values for the prestressing dimension X of the compression
spring (6) depending on the spout extension:
Spout version
Prestressing dimension
8-row extension
124 mm
10-row extension
122 mm
12-row extension
120 mm
14-row extension
118 mm
The specified dimensions are guideline values and can be adjusted.
Setting the prestressing dimension of the compression spring (6):
• Loosen the counter nut (1).
• Continue turning the nut (2) until the required prestressing dimension X has been set.
Measure the prestressing dimension X from the upper side of the pressure sleeve (7) to the
support surface of the spring hanger (5).
• Tighten the counter nut (1).
• Check whether the disc (4) turns freely after making the setting.
• If this is not the case, set the axial play of the disc to 0-1 mm using the hexagon head screw
(3).