Weh TW711 User manual

WEH®- We Engineer Hightech
Type TW711 / TW712
Operating instructions ⋅Betriebsanleitung
WEH®Connector for pressure and function testing of fuel lines on
pipes with collar or bead
WEH®Adapter zur Druck- und Funktionsprüfung von Kraftstoff-
leitungen an Rohren mit Bund oder Sicke

Die deutsche Version ist das Original.
Hersteller: WEH GmbH Verbindungstechnik - im Nachfolgenden „WEH“ genannt.
LANGUAGES
TYPE TW711 / TW712 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
WEH®Connector for pressure and function testing of fuel lines on pipes with
collar or bead
TYP TW711 / TW712 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 28
WEH®Adapter zur Druck- und Funktionsprüfung von Kraftstoffleitungen an
Rohren mit Bund oder Sicke
AE
DE
The German version is the original.
Manufacturer: WEH GmbH Precicion Connectors – hereinafter referred to as “WEH”.

Type TW711 / TW712
WEH®Connector for pressure and function testing of fuel lines on
pipes with collar or bead
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 9
2. INTENDED USE 9
3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION 10
4. TECHNICAL DATA 12
5. STORAGE 13
5.1 Safety instructions for proper storage 13
5.2 Storage 14
6. REQUIRED TOOLS 14
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Operating instructions
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The German version is the original.
Manufacturer: WEH GmbH Precision Connectors - hereafter referred to as 'WEH'.
7. INSTALLATION 15
7.1 Safety instructions for installation 15
7.2 Installing the media line 16
7.3 Checking the connection for leak tightness 16
8. OPERATION 17
8.1 Safety instructions for operation 17
8.2 Connection 18
8.3 Disconnection 19
9. INSPECTION | MAINTENANCE 20
9.1 Safety instructions for inspection and maintenance 20
9.2 Maintenance intervals 21
9.3 Overview of minimum intervals for inspection and maintenance 21
9.4 Maintenance 22
10. TROUBLESHOOTING 24
11. DISPOSAL 26
12. ACCESSORIES | SPARE PARTS 26
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1. INTRODUCTION
Dear Customer,
Thank you for deciding to use our products.
The WEH®TW711 and TW712 Connectors have been developed for pressure and
function test of components with bead, collar or male thread.
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.
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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
instructions 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
maintenance. 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 yourself are solely responsible for the proper performance of the replacement or
repair. WEH is not responsible for the performance or any damage and/or losses
arising from it. WEH assumes no guarantee, warranty, product liability or other lia-
bility for any replacement or repair of the WEH®Product 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. Other-
wise, there is a particular risk of endangering yourself and third parties.
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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
installation, operation and maintenance of this WEH®Product.
Caution: Incorrect application poses a risk to the user's health and can cause property
damages. The consequences of incorrect application could include the following:
- the connector or parts of the connector become loose under pressure
- media that may be under pressure, hot or toxic, can escape
- connection hoses vibrate dangerously
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.
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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.
2. INTENDED USE
- The WEH®TW711 and TW712 Connectors have been developed for pressure and
function test of components with bead, collar or male thread. The connectors come
in many different sizes and forms.
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® Connector has been specially developed for your application and
requirements that you specified when placing your order. The connector only works
properly together with your connection and may only be attached to this connection.
- 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
considered to be similar to piping. This WEH®Product may not be used as safety
accessory. 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 classification 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.
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3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION
WEH®TW711 Connector
Pos� Description
1 Sliding sleeve
2 Lower part
7 Front seal (inside)
Definition of ports
B1 Media inlet
1
7
B1
2
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WEH®TW712 Connector
Pos� Description
1 Sliding sleeve
2 Lower part
7 Front seal (inside)
Definition of ports
B1 Media inlet
1
7
B1
2
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4. TECHNICAL DATA
Please note: Depending on the application, the technical data of your WEH®Product
may differ from these operating instructions. Please therefore observe the marking on
the WEH®Product itself.
Characteristics Basic version
Nominal bore (DN) 3.5mm
Max. allowable operat-
ing pressure PS 10 bar
Temperature range +5°C to +100°C
Medium Petrol, diesel, compressed air
Part materials Wear-resistant stainless steel, corrosion-resistant surfaces
Sealing material FKM
Design With or without integrated shut-off valve
Actuation Manual actuation via sliding sleeve
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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
maximum 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
environmental factors.
ÎDo not stack WEH®Products. For storage and retrieval, follow the first-in-first-out
(FIFO) principle.
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5�2 Storage
ÎFollow the safety instructions in Chapter 5.1 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 15.
> 3 years - Before use, all elastomer seals must be replaced.
For this, send the WEH®Product to WEH for maintenance.
6. REQUIRED TOOLS
Part no� Description Installation Maintenance &
Lubrication
-- Suitable open-ended spanner
(suitable for the relevant spanner widths) X
-- Calibrated torque wrench
(suitable for corresponding torque) X
-- Suitable open-ended spanner insert (suitable for the relevant spanner widths and
torque spanner) X
W136538 WEH®O-ring picker set*X
E99-40 WEH®Lubricant X
*The WEH® O-ring picker is manufactured from plastic and has to be considered as a
consumable product.
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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 Installing the media line) that WEH determined for this
WEH®Product.
Note: The indicated assembly data (tightening torques, assembly turns etc.) are values
that apply only to the components delivered by WEH.
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7�2 Installing the media line
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 10.
ÎUnscrew the protection cap from the port.
ÎClamp the WEH®Connector in a vice with aluminium clamping jaws to mount the
media line.
Note: The WEH®Connector must not be damaged during clamping.
ÎScrew the ‘B1’ media inlet pressure-tight to the port for the media line.
For the tightening torque, please refer to the table below.
Connection Torque
G1/8“ female thread 10 Nm ± 2 Nm
ÎPlease note the connection size marked on your product.
- Other connection sizes are available on request.
7�3 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 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.
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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 caused by any sharp edges that the test piece may have.
ÎOnce the connection has been made, always test the connection by tugging a little
on the WEH®Connector to make sure that is fully engaged and that the clamping
jaws are gripping correctly before introducing the pressurized test medium.
ÎThe clamping jaws of the WEH®Connector are designed to grip the test piece. Keep
fingers and other objects away from the clamping jaws 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
ÎFor WEH®Connectors without an integrated shut-off valve, test medium may escape
when disconnecting. Therefore it is important to disconnect the connector only
under absolutely safe conditions.
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8�2 Connection
ÎGrip the connector by its sliding sleeve (Pos. 1). Make sure that the clamping jaws
are open and protrude from the sliding sleeve (Pos. 1).
ÎBe careful to place the connector straight onto the test piece. Doing so will prevent
any damage to the front seal caused by any sharp edges on the test piece and en-
sure a correct connection.
ÎPush the connector at the sliding sleeve (Pos. 1) forward
onto the test piece (Figure 1). The connector must engage
with a clearly audible click. The retaining ring must be visible
(Figure 2) and the outer edges of the external diameter of the
clamping jaws must no longer be visible (Figure 3 and
Figure 4).
Attention: If the connector does not click into place, the
outer edges of the external diameter of the clamping jaws
are visible or the circlip is not visible, then the connector is
not correctly connected. The connector may spring out of
place and medium may escape.
ÎPull gently on the lower part of the connector (Pos. 2)
(red arrow Figure 5) in the direction opposite that of the
connection to make sure that the connector is properly
connected.
- The connector is now connected pressure-tight to the test
piece.
ÎTo start the testing procedure, apply pressure to media
inlet ‘B1’.
Figure 1
Figure 4Figure 3Figure 2
visible
Figure 5
pull backwards
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8�3 Disconnection
ÎAfter the end of the testing procedure, fully vent the media
line.
Caution: First depressurize the system before releasing
the connection.
ÎGrip the connector by its sliding sleeve (Pos. 1).
ÎPull the sliding sleeve (Pos. 1) back (Figure 6). The
connection to the test piece is released and the connector
can be removed by pulling it straight back.
Attention: In the event that you cannot remove the
connector from the test piece:
- Wait a few moments
- Never use excessive force
- Do not use any tools (e.g. hammer)
Figure 6
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9. INSPECTION | MAINTENANCE
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 10.
Attention: If damage to the WEH®Product or restrictions to its functionality are
detected, measures as set out in Chapter 10. Troubleshooting on page 24 must be
taken. Damaged or leaking WEH®Products must be sent to WEH for maintenance.
9�1 Safety instructions for inspection and maintenance
- The WEH®Product must be depressurized and dismantled for maintenance work.
ÎCheck the WEH®Product for leakage after maintenance work. Please refer to
Chapter 7. Installation on page 15.
- For inspection purposes, it is not necessary for the WEH®Product to be dismantled,
but it must be depressurized.
ÎOnly use original WEH®Spare parts. These are exactly suited to the intended
application and subject to strict quality controls.
ÎDo not damage sealing surfaces or sealing components.
ÎBefore reassembling; check the components, threads and, if present, the sealing
surfaces for damage and contamination. Should you find any damage, replace the
WEH®Product or send it to WEH for maintenance. Stop using the WEH®Product
immediately.
ÎAssemble the WEH®Spare parts absolutely free of oil, grease and dust.
ÎBefore each reassembly, clean the WEH®Product and the corresponding
components by blowing off with oil-free compressed air and remove any adhering
dirt using a damp, soft and lint-free cloth.
Do not use solvents. Use only clean water as cleaning agent.
Attention: Only use oil-free compressed air to blow off the dirt.
Note: Make sure that no cleaning agent enters the gas channel.
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