SCHUNK WBL 85 Balfour Beatty - User Manual

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Single Arm Pantograph

Model: WBL 85 - Balfour Beatty

Permaquip, SRS

Issue: 1/00 Made available: 25/05/00 Description no.: 4-991B.5111

Designed: Techdok Zauner GmbH Checked/approved: Santner

Description

Maintenance- and

Operating Manual

Main Page

Questions and Answers

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Rachel SanchezOct 25, 2025
Why is there excessive air leakage in my SCHUNK Industrial Equipment?
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  Theresa ButlerOct 25, 2025
  Excessive air leakage in your SCHUNK Industrial Equipment can stem from several issues. It could be due to a leaking bellow cylinder, requiring you to exchange the bellow cylinder and check bellow joints to find the reason for the leakage. Other potential causes include a defective pressure regulator (note that a normal air leakage of the pressure regulator is 0.5 l / min), a defective monitoring valve on the pan, or a defective restrictor in the compressed air line, each requiring replacement of the respective component. The compressed air line or signal horn themselves might be defective and need replacement. Also, check if the contact force or the monitoring valve on the pan are poorly set and readjust the setting. The pan head spring stop might be incorrectly set, so readjust the setti...
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Emily PerezNov 9, 2025
What to do if there is uneven wear of carbon strip in SCHUNK Industrial Equipment?
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  Daniel HollandNov 9, 2025
  If you notice uneven wear of the carbon strip in your SCHUNK Industrial Equipment, several factors could be responsible. First, check the air bellow for damage and replace it if broken. It could also be caused by a defective pneumatic control unit, in which case you should exchange the valve unit. Other potential causes include a defect in the pneumatic tube (replace the pneumatic tube), high inner friction of the panto (check the pantograph for damages and eliminate them), or a poorly adjusted parallel guide bar (adjust the turning capacity of the pan head). Additionally, an improperly adjusted bellow drive (bellow does not expand straight-lined) might be the reason, so replace the cables and adjust the bellow to achieve a straight expanding line. If the cables are not greased, replace th...