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20 Troubleshooting /
Fault clearance 25
21 Sectional drawing
and spare parts 26
22 EC Declaration of Conformity 27
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 2
2 General safety information 2
2.1 Information for service and
operating personnel 2
2.2 Warning notes 3
2.3 Symbols used 3
3 Defi nition of terms 4
4 Intended area of use 4
5 Condition as supplied
to customer 4
6 Technical data 4
7 Order data 6
8 Manufacturer’s information 9
8.1 Transport 9
8.2 Delivery and performance 9
8.3 Storage 9
8.4 Tools required 9
9 Functional description 9
10 Construction 9
11 Installation and operation 10
11.1 Installing the diaphragm valve 10
11.2 Operation 11
11.3 Setting the seal adjuster
and the stroke limiter 12
12 Assembly / disassembly
of spare parts 15
12.1 Valve disassembly
(removing bonnet from body) 15
12.2 Removing the diaphragm 15
12.3 Mounting the diaphragm 15
12.3.1 General information 15
12.3.2 Mounting a concave diaphragm 18
12.3.3 Mounting a convex diaphragm 19
12.4 Bonnet mounting
on the valve body 19
13 Special versions 20
13.1 Special version with
electrical locking device 20
13.2 Special version with
mechanical locking device 20
13.3 Special version for mounting
of proximity switches 21
14 Commissioning 23
15 Inspection and servicing 23
16 Disassembly 24
17 Disposal 24
18 Returns 24
19 Information 24
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