GEM 8257, Installation, Operating And Maintenance Instructions

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8257
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13 Troubleshooting / Fault clearance
Fault Possible cause Fault clearance
No function Power supply not OK Check power supply and connection with
product label
Solenoid coil faulty Check continuity, replace solenoid coil if
necessary
Operating pressure too high Check operating pressure, reduce if necessary
Diaphragm faulty
Replace diaphragm
Control aperture
contaminated
Clean solenoid valve, fi t strainer in front if
necessary
Armature blocked Clean the armature and bush, replace the
armature if necessary
Solenoid
valve leaking
Main valve seat leaking Clean main valve seat, replace diaphragm if
necessary
14 Disposal
G
All valve parts must be disposed of according to relevant local or national
disposal regulations / environmental protection laws.
G
Pay attention to adhered residual material and gas di ff usion from penetrated
media.
Parts Disposal
Valve bodies, valve covers in accordance with material identi fi cation
Screws, armatures, bushes, compression
springs
as metallic core scrap
O-rings, diaphragms, sealing and plastic parts as domestic waste type commercial waste
Solenoid coil
as electrical scrap
15 Returns
G
Clean the solenoid valve.
G
Request a goods return declaration form from GEMÜ.
G
Returns must be made with a completed declaration of return.
If not completed, GEMÜ cannot process
credits or
repair work
but will dispose of the goods at the operator's expense.
Note for returns:
Legal regulations for the protection of the environment and personnel require that
you include the completed and signed goods return declaration with the dispatch
documents. Your returned goods can be processed only when this declaration is
completed.