Nederman 920/1500, Installation And Service Manual

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Trolley Return Unit 920/1500 EN
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26. Fit the idler pulley unit in the rail as follows, see Figure 16:
a) RH: Loosen the screws ‘a’, and turn the idler pulley 180°. Refit screws ‘a’ on the
other side.
b) Slide in the idler pulley unit into the rail close to the disconnection arrow. Do not
tighten the idler pulley to the rail.
c) Refit the rail connection sleeve.
27. Fit the wire.
a) Make a simple knot on the middle of the wire.
b) Thread the wire around the idler pulley in the idler pulley unit. See Figure 17.
c) Thread the lower part of the wire through the driving slot on the suction trolley,
see Figure 8 item ‘a’.
d) Thread the upper wire around the drive unit drive pulley and idler pulleys, see
Figure 17 and Figure 19..
e) Hang the upper wire over the guide pulley, see Figure 7. Pull and tighten the
wire so that it becomes adapted to the length of the rail.
f) Make sure both loose ends of the wire are of equal length so that the connecting
knot is being placed symmetric to the first knot. Join the wire ends by the double
eight knot as shown in Figure 18.
· Make an 8 on one wire end and let the other wire end follow the 8 backwards
· Tighten carefully.
Figure 16
Idler pulley unit
a
Connection sleeve
Adjusting screw
Spring
Vehicle travel direction
Figure 17
Figure 18