GEM C67 CleanStar Bedienungsanleitung
GEMÜ C67 CleanStar
Manually operated diaphragm valve
Assembly instructions
Diaphragm replacement
EN
further information
webcode: GW-C67
www.gemu-group.com2 / 8GEMÜ C67
Information
1 Information
NOTICE
▶Only use the assembly instructions in conjunction with
the operating instructions.
2 Warning notes
Wherever possible, warning notes are organised according to
the following scheme:
SIGNAL WORD
Type and source of the danger
Possible
symbol for the
specific
danger
Possible consequences of non-observance.
Measures for avoiding danger.
Warning notes are always marked with a signal word and
sometimes also with a symbol for the specific danger.
The following signal words and danger levels are used:
DANGER
Imminent danger!
▶Non-observance can cause death or
severe injury.
WARNING
Potentially dangerous situation!
▶Non-observance can cause death or
severe injury.
CAUTION
Potentially dangerous situation!
▶Non-observance can cause moderate
to light injury.
NOTICE
Potentially dangerous situation!
▶Non-observance can cause damage to
property.
The following symbols for the specific dangers can be used
within a warning note:
Symbol Meaning
Corrosive chemicals
Hot plant components!
3 Diaphragm replacement – manual valve
WARNING
The equipment is subject to pressure!
▶Risk of severe injury or death.
●Depressurize the plant.
●Completely drain the plant.
WARNING
Corrosive chemicals
▶Risk of caustic burns
●Wear suitable protective gear.
●Completely drain the plant.
CAUTION
Hot plant components!
▶Risk of burns!
●Only work on plant that has cooled down.
3.1 Removing the diaphragm
CAUTION
●Check the fixing of the valve when installing it on a device or distribution installation.
1
1
3
4
5
2
1 = Handwheel
2 = Indicator ring
3 = Central nut
4 = Pipe connections
5 = Service tool
Diaphragm replacement – manual valve
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2
●Open the valve fully by turning the hand-
wheel anticlockwise.
NOTICE
▶The valve is open when the entire posi-
tion indicator (red ring) can be seen.
▶The valve is closed when some of the
position indicator can be seen (2–3
mm; dependent on the integrated travel
stop).
3
1. Place the service tool against the central
nut.
The service tool's locking device must
be pointing anticlockwise in order to
loosen the central nut.
2. Undo the central nut by turning it anti-
clockwise.
You can use a torque wrench to do this.
4
●Carefully undo the central nut by hand
and remove the operator from the valve
body.
Diaphragm replacement – manual valve
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GEMÜ C67
5
●Move the operator to the closed position
by turning the handwheel clockwise.
6
●Unscrew the diaphragm from the oper-
ator by turning it anticlockwise.
Diaphragm replacement – manual valve
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3.2 Mounting the diaphragm
1NOTICE
▶Install a new diaphragm whenever the
central nut is loosened.
Observe the information on the pack-
aging (risk of contamination).
1. Replace the enclosed O-ring if damaged
(e.g. mechanical or chemical stress,
brittleness).
2. Remove the protection cap from the dia-
phragm pin.
3. Take care not to scratch the diaphragm
face when doing so.
2
1. Replace the O-ring using an appropriate
tool.
2. Screw in the new diaphragm by turning
it clockwise, tightening until hand-tight.
3. Move the operator to the open position
by turning the handwheel anticlockwise.
3
1. Press the operator onto the valve body.
NOTICE
▶Pay attention to the position of the fix-
ing grooves in the body and the fixing
lugs on the operator. These must fit to-
gether exactly.
2. Position the central nut by hand and
tighten it clockwise until hand-tight.
Diaphragm replacement – manual valve
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6 / 8
GEMÜ C67
4
1. Place the service tool against the central
nut.
The service tool's locking device must
be pointing clockwise in order to tighten
the central nut.
2. Carefully tighten the central nut by turn-
ing it clockwise with a torque wrench
(see torque table).
Operator size 1 2 3
Torque (Nm) 10–12 14–16 25–30
3. Check the central nut after a week has
passed and retighten it if necessary to
avoid leakage.
Diaphragm replacement – manual valve
www.gemu-group.com 7 / 8 GEMÜ C67
GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
Fritz-Müller-Straße 6-8, 74653 Ingelfingen-Criesbach,
Germany
Tel. +49 (0)7940 123-0 · [email protected]
www.gemu-group.com
Subject to alteration
04.2019 | 88621230
*88621230*
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