GEM C67 CleanStar Manuale utente

GEMÜ C67 CleanStar

Manually operated diaphragm valve

Assembly instructions

Diaphragm replacement

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 = Handwheel

2 = Indicator ring

3 = Central nut

4 = Pipe connections

5 = Service tool

Diaphragm replacement – manual valve

www.gemu-group.com 3 / 8 GEMÜ C67

●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).

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.

●Carefully undo the central nut by hand

and remove the operator from the valve

body.

Diaphragm replacement – manual valve

www.gemu-group.com

4 / 8

GEMÜ C67

●Move the operator to the closed position

by turning the handwheel clockwise.

●Unscrew the diaphragm from the oper-

ator by turning it anticlockwise.

Diaphragm replacement – manual valve

www.gemu-group.com 5 / 8 GEMÜ C67

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.

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.

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

www.gemu-group.com

6 / 8

GEMÜ C67

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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