Wen TW01 User manual

WEH®- We Engineer Hightech
Type TW01
Operating instructions ⋅Betriebsanleitung
WEH®Connector for pressure and vacuum tests in straight tubes,
bores and components with female threads
WEH®Adapter zur Druck- und Vakuumprüfung in Glattrohren,
Bohrungen und Bauteilen mit Innengewinde

Die deutsche Version ist das Original.
Hersteller: WEH GmbH Verbindungstechnik - im Nachfolgenden „WEH“ genannt.
LANGUAGES
TYPE TW01 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
WEH®Connector for pressure and vacuum tests in straight tubes, bores
and components with female threads
TYP TW01 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 38
WEH®Adapter zur Druck- und Vakuumprüfung in Glattrohren, Bohrungen
und Bauteilen mit Innengewinde
AE
DE
The German version is the original.
Manufacturer: WEH GmbH Precicion Connectors – hereinafter referred to as “WEH”.

Type TW01
WEH®Connector for pressure and vacuum tests in straight tubes,
bores and components with female threads
CONTENTS
1. INTRODUCTION 6
1.1 For your guidance 6
1.2 General information 7
1.3 Warranty and liability 7
1.4 General safety instructions 8
1.5 Definition of qualified personnel 8
2. INTENDED USE 9
3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION 10
4. TECHNICAL DATA 14
5. STORAGE 15
5.1 Safety instructions for proper storage 15
5.2 Storage 16
6. REQUIRED TOOLS 16
MD-10187-L51-R1.2.0-03
Page 4
Operating instructions
AE

The German version is the original.
Manufacturer: WEH GmbH Precision Connectors - hereafter referred to as 'WEH'.
7. INSTALLATION 17
7.1 Safety instructions for installation 17
7.2 Installation of media line and pilot pressure line 18
7.3 Installation of accessories for manual pressurization of the pilot pressure 19
7.4 Checking the connection for leak tightness 19
8. OPERATION 20
8.1 Safety instructions for operation 20
8.2 Connection 21
8.3 Disconnection 24
9. INSPECTION | MAINTENANCE 26
9.1 Safety instructions for inspection and maintenance 26
9.2 Maintenance intervals 27
9.3 Overview of minimum intervals for inspection and maintenance 27
9.4 Maintenance 28
10. TROUBLESHOOTING 32
11. DISPOSAL 34
12. ACCESSORIES | SPARE PARTS 34
MD-10187-L51-R1.2.0-03 Page 5
Operating instructions AE

1. INTRODUCTION
Dear Customer,
Thank you for deciding to use our products.
The WEH®TW01 Connector has been especially developed for pressure and vacuum
tests in straight tubes, bores and components with female threads.
Observe and follow all instructions and warnings in these operating instructions�
Non-observance may result in personal injury and/or property damage�
1�1 For your guidance
The markings and symbols contained in these operating instructions have the following
meanings:
- Items are indicated by a dash
ÎCalls for action are indicated by an arrow
Figures
The illustrations and/or images used in these operating instructions are particularly provided
for illustrative purposes only and may differ in some details from the actual product. For
binding information, please refer to your individual orders.
Abbreviations
For explanation of abbreviations and definitions of terms see Technical Appendix of the
corresponding catalog or www.weh.com
Definition of signal words
Caution: A section marked with 'Caution' warns you about hazards that could result in a
slight, usually reversible personal injury if you do not comply with this instruction.
Attention: Sections marked ‘Attention’ warn you of situations that could lead to property
damage and disruptions in operation if you do not comply with the instruction.
Note: Sections marked ‘Note’ indicate that malfunctions in operation may occur if you
do not comply with the instruction.
Please note: Sections marked with ‘Please note’ provide you with additional information
for smooth operation.
MD-10187-L51-R1.2.0-03
Page 6
Operating instructions
AE

1�2 General information
ÎFirst read these operating instructions to avoid misuse and resulting damage.
- In these operating instructions you will find all the necessary information and instruc-
tions for the WEH®Product.
ÎThen check the contents of your delivery. Each delivery must contain:
- a delivery note
- an original WEH Test report (not applicable to spare parts)
- WEH operating instructions
ÎIf any documents are missing, please contact WEH or your responsible distributor.
1�3 Warranty and liability
- Our General Terms and Conditions apply.
ÎPlease read these operating instructions and safety instructions carefully and follow
the information contained therein.
- The information in these operating instructions reflects to the state of knowledge at
the time of printing. Failure to comply may void the warranty. Any side agreements
to these operating instructions require the written approval of the Head of the Quality
Department at WEH.
- Violation of these operating instructions result in the lapse of all warranty claims.
WEH will accept no liability for consequential damage, in particular damage due to
personal injury and/or other legal interests.
Caution: WEH®Products may only be repaired by WEH.
ÎContact WEH or the responsible distributor if the WEH®Product requires mainte-
nance. Special maintenance work that may be performed by the operator is described
in these operating instructions and is specially marked.
ÎOnly use original WEH®Spare parts. These are exactly suited to the intended appli-
cation and subject to strict quality controls.
- You are responsible for the correct operation of the replacement or repair. WEH is not
responsible for the performance or any damage and/or losses arising from it. WEH
assumes no warranty, product liability or other liability for any replacement or repair
performed by you or a third party. If you or a third party does not have the necessary
skills and qualification for proper performance, you must refrain from performing
replacement or repair. Otherwise, there is a particular risk of endangering yourself
and third parties.
MD-10187-L51-R1.2.0-03 Page 7
Operating instructions AE

1�4 General safety instructions
ÎAlways comply with all applicable local, national and international requirements,
stipulations, decrees, laws, standards, provisions, directives, norms, regulations,
prohibitions and instructions as well as all applicable industrial, quality and technical
standards. In particular, make sure that you and all users comply with the applicable
requirements related to occupational health and safety as well as product safety
requirements and that all required permissions, certificates and approvals have been
obtained.
ÎThese operating instructions should be provided to anyone responsible for the instal-
lation, operation and maintenance of this WEH®Product.
ÎContact WEH before using the WEH®Product if the instructions in these operating
instructions are unclear in any way.
ÎTake appropriate safety measures if operating conditions exist that could endanger
the user.
ÎIn case of any damage that may affect the proper functioning of the WEH®Product, do
not use the WEH®Product until the situation has been clarified. Disassembly of the
WEH®Product may only be performed by WEH.
ÎComply with the assembly data indicated in these operating instructions. Tightening
with higher torques/assembly turns can result in damage or even fractures when the
system is pressurized.
ÎDo not use any auxiliary materials or cleaning agents other than those indicated in
these operating instructions. Using other auxiliary materials or cleaning agents may
cause damage to the WEH®Product or to downstream components.
- WEH is not responsible for damage caused by external forces or other external
influences.
- It is assumed that only transport and storage facilities suitable for the storage of the
WEH®Product are used.
1�5 Definition of qualified personnel
- Qualified personnel, as defined by these instructions, are persons who, based on
their professional training, their knowledge (including the relevant standards and
regulations), experience and manual skills, can independently assess and properly
perform assigned work tasks (in conjunction with WEH®Products) and can thus
independently recognize and prevent potential dangers at an early stage.
MD-10187-L51-R1.2.0-03
Page 8
Operating instructions
AE

2. INTENDED USE
- The WEH®TW01 Connector has been especially developed for pressure and vacuum
tests in straight tubes, bores and components with female threads.
- The WEH®TW01 Connector quickly establishes a leak-free connection for pressure
and vacuum test, allowing liquid or gaseous medium to be supplied through the
connector and the test piece to be tested, filled or purged.
- The WEH®Connector is not suitable for emptying containers under pressure.
ÎAlways ensure that the WEH®Product is used only for its intended use.
Please note in particular the technical data of the WEH®Product in Chapter 4 as well
as the marking on the WEH®Product itself.
- This WEH®Product is generally classified as pressure accessory in accordance
with Article 2 (5) of the Pressure Equipment Directive 2014/68/EU and is consid-
ered to be similar to piping. This WEH®Product may not be used as safety acces-
sory. Furthermore, it is pointed out, that this WEH®Product is designed and placed
on the market in accordance with the requirements of Article 4 (3) of the Pressure
Equipment Directive 2014/68/EU. The assessment with regard to a different classi-
fication can, however, be made on request.
Caution: Any use beyond the scope of application is considered as unintended use
and may result in personal injury and/or property damage.
MD-10187-L51-R1.2.0-03 Page 9
Operating instructions AE

3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION
Product description
TW01 for non-threaded application
Pos� Description
1 Housing
2 Spacer
7 Front seal
Definition of ports
B1 Media inlet
P1 Pilot pressure port - inlet
GMounting bore
7
2
1
G
B1
G
P1
MD-10187-L51-R1.2.0-03
Page 10
Operating instructions
AE

TW01 for threaded application
Pos� Description
1 Housing
2 Spacer
7 Front seal
8 Main seal
Definition of ports
B1 Media inlet
P1 Pilot pressure port - inlet
GMounting bore
G
B1
G
P1
7
2
1
8
MD-10187-L51-R1.2.0-03 Page 11
Operating instructions AE

TW01 twin connectors for non-threaded application holes
Pos� Description
1 Housing
2 Spacer
7 Front seal
Definition of ports
B1 Media inlet
P1 Pilot pressure port - inlet
GMounting bore
7
2
1
G
B1
GP1
B1
MD-10187-L51-R1.2.0-03
Page 12
Operating instructions
AE

Product description accessories
Pneumatic coupling and control-/ bleeding valve
Pos� Description
3 Control-/ bleeding valve
4 Pneumatic coupling
Definition of ports
P1 Pilot pressure port - inlet
P2 Pilot pressure port - outlet
Hand slide valve and thread extension
Pos� Description
5 Thread extension
6 Hand slide valve
Definition of ports
P1 Pilot pressure port - inlet
P2 Pilot pressure port - outlet
Elbow 90°
Definition of ports
P1 Pilot pressure port - inlet
P2 Pilot pressure port - outlet
3
4
P1
P2
5
6
P1
P2
P1
P2
P1
P2
MD-10187-L51-R1.2.0-03 Page 13
Operating instructions AE

4. TECHNICAL DATA
Characteristics Basic version
Max. allowable operating
pressure PS Vacuum up to 9 bar
Pilot
pressure
TW01 BG01 6 - 9 bar compressed air
TW01
general 6–12bar compressed air
Temperature range +5°C to +80°C
Leak rate 1 x 10-3 mbar x l/s
Part materials corrosion-resistant surfaces, natural anodized aluminium
Sealing materials Main seal in Chloroprene / O-ring in NBR
Urethane seal for applications with increased wear
MD-10187-L51-R1.2.0-03
Page 14
Operating instructions
AE

5. STORAGE
5�1 Safety instructions for proper storage
ÎMake sure that you always comply with these following safety instructions and
storage time.
Attention: Improper storage of the WEH®Product can significantly reduce the maxi-
mum service life.
ÎProtect the WEH®Product against damage, contamination, inappropriate storage
and excessive temperature fluctuations.
ÎStore the WEH®Product, the accessories and spare parts in the original packaging
until they are used for the first time and during periods when they are not being used.
ÎStore the WEH® Product within a temperature range of -40 °C up to +40 °C.Storage
temperatures outside this range may affect the service life of the WEH®Product.
ÎDo not store the WEH®Product in the vicinity of heat sources. Avoid humidity and
condensation. The ideal relative air humidity for storage is approx. 65%.
ÎDo not store the WEH®Product together in the same space with solvents, chemicals,
acids, fuels or disinfectants.
ÎProtect the WEH®Product against light, in particular direct sunlight, oxygen, ozone,
heat, UV radiation, and other negative environmental influences. The service life of
parts made of elastomer or plastic may be substantially reduced by such environ-
mental factors.
ÎDo not stack WEH®Products. For storage and retrieval, follow the first-in-first-out
(FIFO) principle.
MD-10187-L51-R1.2.0-03 Page 15
Operating instructions AE

5�2 Storage
ÎFollow the safety instructions in Chapter 5 and observe the following storage times.
The appropriate storage period applies from the date of delivery (i.e. the date of
invoicing or goods issue date as recorded by WEH or its distributor). If the
WEH®Product is installed in a complete system, the storage time depends on the
component with the shortest storage time.
Up to 3 years
ÎBefore use, check the surfaces of the external seals for cracks.
Attention: Any elastomer seals with fine cracks on the surface must
be replaced.
Note: If you should have any doubts about the aging state of the
stored WEH® Product, please contact WEH.
Attention: Before commissioning, check the WEH® Product for leak
tightness. On this topic, see Chapter 7. Installation on page 17.
> 3 years - Before use, all elastomer seals must be replaced.
ÎFor this, send the WEH®Product to WEH for maintenance.
6. REQUIRED TOOLS
Part no� Description Installation Mainte-
nance
-- Suitable open-ended spanner
(suitable for the relevant spanner widths) X
-- Suitable calibrated torque wrench
(suitable for the corresponding torque) X
-- Suitable open-ended spanner insert
(suitable for the relevant spanner widths and torque spanner) X
-- Slotted screwdriver X
MD-10187-L51-R1.2.0-03
Page 16
Operating instructions
AE

7. INSTALLATION
7�1 Safety instructions for installation
ÎCheck the information provided in these operating instructions and the label on the
WEH® Product. The information must conform to your application.
ÎOnly connect the WEH®Product to faultless connections.
ÎCheck the WEH®Product for transport damages, contamination and other damage. If
you should detect anything wrong with the WEH®Product, it may no longer be used.
Replace the WEH®Product or send it to WEH for maintenance.
ÎRemove transport securing devices (such as protection caps) before installing the
WEH®Product. Transport securing devices serve the purpose of protecting the
product and connection ports during transport and storage. The transport securing
devices are not, for example, designed to withstand pressure or to be used as plugs.
ÎEnsure that the system is depressurized. Installation must only be effected in
depressurized condition.
ÎAvoid using excessively short media lines and narrow bending radii. Lateral forces
may cause leakages or damage to components and make it more difficult to attach
the WEH®Connector properly.
ÎUse arrestor cables, partitions, etc. for additional safety where being used for
hazardous applications or under hazardous conditions.
ÎUSIT rings should be used to seal the ports.
ÎBefore installation, check if the counterparts are designed to withstand the assembly
data (see Chapter 7.2 Installation of media line and pilot pressure line) that WEH deter-
mined for this WEH®Product.
Note: The assembly data (torques, assembly turns etc.) are values which apply exclu-
sively to the components delivered by WEH.
MD-10187-L51-R1.2.0-03 Page 17
Operating instructions AE

ÎConnect the WEH®Connector to a suitable securing device (mechanical connection
via cylinder, rigid fixture, or other means) at the mounting bores “G” on the back of
the connector (or other secure fixture) so that the connector is securely connected
to the test piece when pressurized and can not come loose.
For the tightening torque, please refer to the table below.
Caution: The safety device must be designed to withstand the loosening force that
occurs (plus an appropriate safety tolerance).
Example of the loosening force: The test piece has an inner diameter of
1/2” (= 12.7 mm) and is tested at a maximum of 5 bar.
Loosening force* = pressure x area 0.5 N/mm2x 12.72x n : 4 = 63.33 N (without
consideration of friction forces)
7�2 Installation of media line and pilot pressure line
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 10.
ÎUnscrew the protection caps from the connection ports.
ÎClamp the WEH®Connector in a vice with aluminium clamping jaws to mount the
media line and pilot pressure line.
Note: The WEH®Connector must not be damaged during clamping.
ÎScrew the pilot pressure port ‘P1’ pressure-tight onto the connection port of the pilot
pressure line.
For the tightening torque, please refer to the table below.
ÎScrew the ‘B1’ media inlet pressure-tight to the port for the media line.
For the tightening torque, please refer to the table below.
Ports Torque
M5 5 Nm ± 2 Nm
M6 6 Nm ± 2 Nm
G1/8“ female thread 10 Nm ± 2 Nm
G1/2“ female thread 50 Nm ± 2 Nm
G3/4" female thread 60 Nm ± 2 Nm
ÎPlease note the connection size marked on your product.
- Other connection sizes are available on request.
MD-10187-L51-R1.2.0-03
Page 18
Operating instructions
AE

7�3 Installation of accessories for manual pressurization of the pilot pressure
Installation of the pneumatic coupling (Pos� 4) and control - / bleeding valve (Pos� 3)
ÎScrew the pilot pressure port 'P2' of the control - / bleeding valve (Pos. 3) pres-
sure-tight to the pilot pressure port 'P1' of the WEH®Connector.
For the tightening torque please refer to the table on Page 16.
ÎScrew the pilot pressure port ‘P1’ of the pneumatic coupling (Pos. 4) pressure-tight
onto the connection port of the pilot pressure line.
For the tightening torque please refer to the table on Page 16.
Installation of the hand slide valve (Pos� 6) and, if necessary, the thread extension (Pos� 5)
ÎScrew the pilot pressure port 'P2' of the hand slide valve (Pos. 6) pressure-tight to
the pilot pressure port 'P1' of the WEH®Connector.
For the tightening torque please refer to the table on Page 16.
Note: For small body sizes where, for reasons of space, the hand slide valve can not
be screwed directly into the pilot pressure port 'P1' of the WEH®Connector, a thread
extension (Pos. 5) can be screwed in between. First screw the thread extension to
the hand slide valve, then screw the extension into the connector.
ÎScrew the pilot pressure port ‘P1’ of the hand slide valve (Pos. 6) pressure-tight onto
the connection port of the pilot pressure line.
For the tightening torque please refer to the table on Page 16.
Installation of the Elbow 90°
ÎScrew the pilot pressure port 'P2' of the elbow pressure-tight to the pilot pressure
port 'P1' of the WEH®Connector.
For the tightening torque, please refer to the table on Page 16.
ÎScrew the pilot pressure port ‘P1’ of the elbow pressure-tight onto the connection
port of the pilot pressure line, the hand slide valve (Pos. 6) or the control - / bleeding
valve (Pos. 3). For the tightening torque please refer to the table on Page16.
7�4 Checking the connection for leak tightness
ÎConnect the connector to a closed test piece.
ÎSlowly apply the operating pressure to the connector and media line.
Caution: The test piece must be closed.
ÎCheck the connector, the connection to the media line, the connection to the pilot
pressure ports and the connection to the test piece for leak tightness.
Attention: Do not use a leak detection spray that contains ammonia, since this could
cause corrosion of the connector.
MD-10187-L51-R1.2.0-03 Page 19
Operating instructions AE

8. OPERATION
8�1 Safety instructions for operation
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 10.
ÎApply pressure to the WEH®Connector only once it has been connected to a test
piece.
ÎDo not use excessive force when actuating.
ÎFollow the steps in exactly the right order when connecting and disconnecting the
WEH®Connector.
ÎAttach and detach the WEH®Connector only when it is not under pressure.
ÎConnect the WEH®Connector only to test pieces in full working order.
ÎAlign the WEH®Connector correctly with the test piece to prevent damage to the
front seal and the seals caused by any sharp edges that the test piece may have.
ÎThe seals of the WEH®Connector are designed to grip the test piece. Keep fingers
and other objects away from the seals when actuating the connector.
Caution: Possible consequences of failing to observe this instruction may include:
– Risk of fingers being crushed while connecting
– Risk of personal injury and damage to property by parts that may become
detached under high pressure
– Risk of personal injury by media escaping at high pressure
– Risk to human safety by hoses not being secured
ÎThe WEH®Connector is not fitted with an integrated shut-off valve and thus will not
prevent the loss of test medium when disconnecting. Therefore it is important to
disconnect the connector only under absolutely safe conditions.
ÎDo not supply test pressure or pilot pressure if the WEH®Connector is not connected
to a test piece.
Attention: The WEH®Connector is actuated by compressed air. This acts on a piston
which expands the front seal (Pos. 7), thus creating the pressure-tight connection.
An integrated stroke limitation prevents overstreching of the front seal and thus pos-
sible damage to the seal if the connector is subjected to pilot pressure without being
connected to a test piece.
ÎMake sure that the test pressure is not built up until the required pilot pressure for
sealing is reached. It should also be ensured that the test pressure can be quickly re-
leased if the pilot pressure drops below the minimum pressure required for sealing.
MD-10187-L51-R1.2.0-03
Page 20
Operating instructions
AE