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643
1 General
information
Prerequisites to ensure that the GEMÜ valve
functions correctly:
Correct transport and storage
Installation and commissioning by trained
personnel
Operation according to these installation,
operating and maintenance instructions
Recommended maintenance
Correct installation, operation, servicing and
repair work ensure faultless valve operation.
The descriptions and instructions
apply to the standard versions.
For special versions not described
in these installation, operating
and maintenance instructions the
basic information contained herein
applies in combination with any
additional special documentation.
All rights including copyright
and industrial property rights are
expressly reserved.
2 General safety information
The safety information does not take into
account:
Unexpected incidents and events, which
may occur during installation, operation
and servicing.
Local safety regulations which must be
adhered to by the operator and by any
additional installation personnel.
Contents
1
General information
16
2
General safety information
16
2.1
Information for service
and operating personnel
17
2.2 Warning
notes
17
2.3
Symbols used
17
3 De
fi
nition of terms
18
4
Intended area of use
18
5
Condition as supplied
to
customer
18
6
Technical data
18
7 Order
data
19
8 Manufacturer's
information 20
8.1 Transport
20
8.2
Delivery and performance
20
8.3 Storage
20
8.4 Tools
required
20
9
Functional description
20
10 Construction
20
11
Installation and operation
21
11.1 Installing the valve
21
11.2 Operation
22
11.3 Shaft
extension
22
12
Assembly / disassembly
of spare parts
23
12.1 Valve
disassembly
(removing bonnet from body)
23
12.2 Removing the diaphragm
23
12.3 Mounting the diaphragm
23
12.3.1 General information
23
12.3.2 Mounting a concave diaphragm 24
12.3.3 Mounting a convex diaphragm
24
12.4 Bonnet
mounting
on the valve body
25
13 Commissioning
25
14
Inspection and servicing
26
15 Disassembly
26
16 Disposal
26
17 Returns
26
18 Information
27
19 Troubleshooting
/
Fault
clearance
27
20 Sectional
drawing
and spare parts
28
21
EC declaration of conformity 29
Summary of Contents for 643 Series
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