O
PERATING MANUAL
DAB530
M
AINTENANCE
/
SERVICE
ThyssenKrupp Aufzugswerke GmbH
7.9
Replacing the rope pulley
Important:
Before starting work, secure the counterweight and elevator car
against uncontrolled movement. The power supply to the installation must be
switched off. No tensile force or torque may be acting on the traction sheave
and rope pulley (DW).
Relieve the load on the rope pulley by lifting the ropes with the hoist (chapter
9); secure the rope arrangement with the blocking clamp.
Remove the rope support on the rope pulley (DW).
Pull the ropes with blocking clamp to the side and tie in place.
Attach the rope pulley to the lifting gear; turn back the setting screw (Fig. 5.1,
Item 1) on the axle bracket side; remove the axle bracket; slightly raise the
rope pulley (DW) with the lifting gear and pull out the axle.
Use the lifting gear to carefully lift the rope pulley out of the machine base
frame and place it down.
Place the new pulley with the lifting gear carefully in the installation position
in the frame. Observe the rope arrangement.
Align the axle borehole of the rope pulley (DW) as flush with the mounting
boreholes in the frame. Fit the axle and secure with the axle bracket. Detach
and remove the lifting gear.
Align the ropes on the rope pulley (DW) according to the rope grooves.
Lower the hoist to tension the ropes.
Fit the rope support; remove the blocking clamp.
Tighten the side setting screws for the position of the rope pulley (DW) above
the axle bracket until the rope pulley is clamped in place. Then turn the
setting screw back by half a revolution (play backlash). Secure this setting
with lock nuts.
(Can be omitted if there are HeliCoil inserts in the threads of the setting
screws)
Check the alignment of the grooves from the traction sheave to the rope
pulley (DW).
The grooves must be arranged offset by half the groove gap dimension (half
of the distance from one groove centre to the next). Fig. 3.1-5: dimension 10
applies to 20 mm groove clearance
If there are deviations, correct the setting by moving the rope pulley (DW) to
the side over the axle with the setting screws (Fig. 5.1).
48
Version 03/2017
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