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C. Slip clutch adjustment
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Introduction
The slip clutch on the drive unit is a safety device which
allows the chain to stop if the load becomes excessive . It
has two purposes:
• Prevent damage to products on conveyor
• Prevent damage to conveyor
Note
The slip clutch is not a personal safety de vice . It is primarily intended to protect the equipment.
Where a slip clutch is fitted, it must be adjusted so that it
does not slip whenever th e drive unit is started under full
load. The installation is carried out as follows:
Preparations for adjustment
1 Stop the conveyor.
2 Ensure that the conveyor cannot be started acciden-
tally. For example: unplug the electric power plug.
3 Remove any load on the conveyor.
Caution
If you try to adjust the slip clutch when there is still load
on the conveyor, the accumulated tension in the chain
can cause severe injuries when you release the clutch.
Table 1. Adjustment of slip clutch
Traction force, Fmax (N)
No.
Note
XSXLX85/XM,
XH, XK,
X180/X300
0 300 300 300 600
1 400 400 400 800
2 500 500 500 1000
3 700 700 1150
4 800 800 1300
5 1550
6 1050 1050 1700
7
8 1250 1250 2000
9
10 1400 2200
11
12 1500 2400
13
14 1650 2500
Standard and direct drives 1/2”:
Slip clutches marked 3904324,
5052769, 3925774, 5052827
XT XK H
Standard drives 5/8”:
Slip clutches marked
3925071, 5052772
Adjustment procedure (see Figure 1)
1 Remove the drive unit protection cover.
2 Use an Allen key, 3 mm, to loosen the screw (1) on the
slip clutch so that the adjustment nut (2) can be freely
rotated.
3 Turn the adjustment nut (2) clockwise with a hook
spanner (see Figure 2) until the arro w on the nut is
aligned with the desired Fmax value (3). See Table 1
for correct values.
Note: On delivery, the clutch is always set to “0”.
4 Tighten the screw (1).
5 Re-install the drive unit protection cover.
Figure 1. Slip clutch (exploded view)
Figure 2. Hook spanner 5053980
468 C. Slip clutch adjustment
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