GEM iComLine CleanStar C57 HPW, Installation, Operating And Maintenance Instruction

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18 Troubleshooting / Fault clearance
Fault Possible cause Fault clearance
Working medium escapes
from leak detection hole*
Diaphragm faulty Replace bonnet and diaphragm
Diaphragm globe valve
doesn't open or doesn't
open fully
Bonnet faulty
Replace bonnet
GEMÜ recommends to replace the diaphragm
Diaphragm incorrectly mounted
Remove bonnet, check diaphragm mounting,
replace diaphragm if necessary
Foreign matter between
diaphragm and valve seat
Remove bonnet, remove foreign matter, check
diaphragm and valve body for damage and
replace parts if necessary
Diaphragm globe valve
leaks downstream (doesn't
close or doesn't close
fully)
Operating pressure too high
Operate diaphragm globe valve with control
pressure specified in data sheet
Valve seat damaged
Check valve seat for damage, if necessary
replace valve body and diaphragm
Foreign matter between
diaphragm and valve seat
Remove bonnet, remove foreign matter, check
diaphragm and valve body for damage and
replace parts if necessary
Bonnet faulty
Replace bonnet
GEMÜ recommends to replace the diaphragm
Diaphragm faulty Replace diaphragm
Diaphragm globe valve
leaks between bonnet and
valve body
Bonnet / valve body damaged Replace bonnet / valve body
Bolting between valve body and
bonnet loose
Retighten bolting between valve body and
bonnet
Valve body connection to
piping leaks
Incorrect installation Check installation of valve body in piping
Union nuts loose Tighten union nuts
Valve body leaks Valve body faulty
Check valve body for damage, replace valve
body if necessary
Handwheel cannot be
turned
Bonnet faulty
Replace bonnet
GEMÜ recommends to replace the diaphragm
Diaphragm globe valve is secured
with lock out device
Remove lock out device
* see chapter 9 "Construction"
Note for returns:
Legal regulations for the protection
of the environment and personnel
require that the completed and
signed goods return declaration
is included with the dispatch
documents. Returned goods can
be processed only when this
declaration is completed.
17 Information
Note on staff training:
Please contact us at the address
on the last page for sta ff training
information.
Should there be any doubts or
misunderstandings in the preceding text,
the German version of this document is the
authoritative document!
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C57 HPW