9 | P a g e
C4 Troubleshooting
Leakage of flange connection
Incorrect length of flange
screws
Flange screws not properly
tightened
Valve not centered correctly
Flange sealing surfaces
between pipeline/fitting not
exactly parallel
Flange sealing not correctly
centered
Incorrect flange sealing material
See this Instruction Manual,
Section B5
Wedge not closing 100 %
Damaged wedge
See supplied drive instruction
manual
Replace wedge
Plate does not open/close
100 %
Drive fault
Drive circuit fault (provided end
switch or mechanical stop)
Wedge leaking due to deposits
Wedge mechanically damaged
Wedge nut worn
See supplied drive instruction
manual
Replace wedge nut
Relubricate spindle
If replacement parts are used for maintenance/repairs that are not original Hawle replacement parts
and/or the instructions regarding operation, maintenance and repairs are not observed by the user,
Hawle Armaturenwerke GmbH will not provide a warranty for damages to the fitting.
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