SCHUNK WBL 85 Balfour Beatty, Maintenance And Operating Manual

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Troubleshooting
Single Arm Pantograph WBL 85 Balfour Beatty
Page 18 WBL 85-15kV
8. Troubleshooting
8.1 General Information
Adjustment works are referred to in the “Adjustment Work“ chapter.
8.2 Trouble Table
Check air bellow,
exchange broken air
bellow.
(also see defect: Bellow
drive defective)
Replace cables.
(also see
defect: Cable torn)
Exchange valve unit.
Replace pneumatic tube.
Check pantograph for
damages, and eliminate
damages.
Replace defective bearings.
Adjust turning capacity of
pan head.
(also see # 10.7, adjust
turning capacity of pantograph head)
Replace cables, adjust
bellow to achieve straight
expanding line.
(also see
# 10.3, adjusting the bellow drive)
Replace cables and
grease in area of cam disk
with non-water-soluble
grease.
Tighten screws.
Exchange leaking hose
with new hose line.
Air bellow damaged.
Cable torn.
Pneumatic control unit
defective.
Pneumatic tube defect.
Inner friction of panto is
too high.
Parallel guide bar is poorly
adjusted.
Bellow drive is improper
adjusted; bellow does not
expand straight-lined.
Cables are not greased
Screws are loose.
Hose line leaking.
Pantograph does not
rise or lower.
Uneven wear of carbon
strip.
Cable torn.
Bellow drive defective.
Defect Reason(s) Correction