ThyssenKrupp DAF290 User Manual

OPERATING MANUAL DAF290 MAINTENANCE
ThyssenKrupp Aufzugswerke GmbH
7.8 Emergency "release from engaged position"
If the safety gear on the elevator car or counterweight has triggered, it can
occur that the driving force of the traction sheave is insufficient to move the
elevator; the ropes slip through.
Perform the following measures in this case:
• Switch off the drive and control system.
• Remove the traction sheave cover or rope fixing beam above the traction
sheave.
• Release the hydraulic jack on the pull side of the traction sheave and
place it in the mounting borehole in the machine base frame.
• Screw the pressure arm with centring pin facing downwards onto the front
of the traction sheave. Here, use the thread near the jack (see Fig. 7.6.2)
Engage the blocking clamp with lug in the ring groove under the brake disc
and bolt in the next thread above the pressure arm on the traction sheave.
(See Fig. 7.8.1)
• Tighten the 3 pressure bolts to clamp the ropes with the pressure piece.
• Operate the brake release lever on the brake magnet and pump the jack
to move the traction sheave in the desired direction until the safety gear
lock is released. (The drain valve must be closed; the centring pin of the
pressure arm must be located in the groove of the jack)
• After the pulling operation has been completed, remove the blocking
clamp and mount the rope fixing beam as well as the traction sheave
cover according to instructions.
Mounting the blocking clamp
Note: If the hydraulic jack travel or the traction sheave movement is not
enough to free the elevator car, secure it by applying the rope clamp. The
rope clamp must then abut with the recess on the machine base frame, the
other side of the rope clamp on the flat bar welded to the inside of the base
frame.
Lower the hydraulic jack, reset the pressure arm to the next securing thread
on the traction sheave above the hydraulic jack.
If there is not enough travel for the blocking clamp, this should also be reset.
Then repeat the procedure described until the elevator car is free.
Fig. 7.8.1
1
Lug
2
Pressure piece
3
Pressure bolts
1
2
3
29
10-2012
Product has been
replaced

ThyssenKrupp DAF290 Specifications

General

Brand	ThyssenKrupp
Model	DAF290
Category	DC Drives
Language	English