Weh TSF2 CNG User manual

WEH®- We Engineer Hightech
Type TSF2 CNG
Operating instructions ⋅Betriebsanleitung Date: 09/22
WEH®Natural gas filter (40 micron) for installation in CNG vehicles
and fueling stations
WEH®Erdgasfilter (40 Mikron) zum Einbau in CNG-Fahrzeuge
und -Tankstellen

Die deutsche Version ist das Original.
Hersteller: WEH GmbH Gas Technology - im Nachfolgenden „WEH“ genannt.
The German version is the original.
Manufacturer: WEH GmbH Gas Technology - hereafter referred to as 'WEH'.
LANGUAGES
TYPE TSF2 CNG � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
WEH®Natural gas filter (40 micron) for installation in CNG vehicles and
fueling stations
TYP TSF2 CNG � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 28
WEH®Erdgasfilter (40 Mikron) zum Einbau in CNG-Fahrzeuge und -Tankstellen
AE
DE

Type TSF2 CNG
WEH®Natural gas filter (40 micron) for installation in CNG vehicles
and fueling stations
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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The German version is the original.
Manufacturer: WEH GmbH Gas Technology – hereinafter referred to as “WEH”.
7. INSTALLATION 15
7.1 Safety instructions for installation 15
7.2 Installing the filter 16
7.3 Checking the connection for leak tightness 16
8. INSPECTION | MAINTENANCE FOR INDUSTRIAL ARTICLES ONLY 17
8.1 Safety instructions for inspection and maintenance 17
8.2 Maintenance intervals 18
8.3 Overview of minimum intervals for inspection and maintenance 18
8.4 Maintenance 18
8.5 Maintenance TSF2 CNG filter with double ferrule fitting on both sides 19
8.6 Maintenance TSF2 CNG filter with female thread and male thread 23
9. TROUBLESHOOTING 26
10. DISPOSAL 26
11. ACCESSORIES | SPARE PARTS 26
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1. INTRODUCTION
Dear Customer,
thank you for deciding to use our products.
The WEH®TSF2 CNG filter has been developed for the installation in CNG vehicles and
fueling stations.
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 / Definitions
For explanation of abbreviations and definitions of terms see applicable 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 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 WEH®Product
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 aris-
ing from it. WEH assumes no guarantee, warranty, product liability or other liability
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. Otherwise,
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 tech-
nical standards. In particular, make sure that you and all users comply with the ap-
plicable 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.
- The WEH®Product and these operating instructions are intended for use by
qualified personnel (see Chapter 1.5). Make these operating instructions available
in particular to the qualified personnel responsible for the individual phases of the
life cycle (especially for storage, installation, operation, inspection and mainte-
nance, troubleshooting and disposal) of the WEH®Product. The qualified personnel
must have read and understood these operating instructions.
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. Tight-
ening 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.
ÎDo not apply any external forces to the WEH®Product. Therefore, do not lean on the
(connected) WEH®Product, do not hang on the WEH®Product and do not climb on
the WEH®Product under any circumstances. In addition, refrain from hammering
on the WEH®Product or similar. Such force effects can lead to damage to property
and personal injury. Also make sure that the WEH®Product is protected from being
stepped on or run over in any way.
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- The WEH®Product can become very hot or very cold due to the possible fluids
flowing through it, depending on the application and operating situation. In this
regard, observe the national and international regulations on occupational health
and safety to prevent injuries.
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®TSF2 CNG filter has been developed for the installation in CNG vehicles and
fueling stations.
ÎOnly use WEH®Filters with ECE-approval in vehicles with road registration.
ÎUse only WEH®Filters with pressure equipment classification in vehicles without
road registration such as industrial trucks and in industrial systems (e.g. fueling
stations).
ÎAlways ensure that the WEH®Product is used only within the range of 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.
- When used at sea or in the vicinity of the sea, increased salt and moisture content of
the air may cause faster wear and corrosion of the product. Please observe the
special maintenance instructions in Chapter 8.2 Maintenance intervals on page
18.
- The WEH®Filter for vehicles without road registration and industrial systems 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
TSF2 CNG with double ferrule fitting on both sides
Exploded view
Pos� Description
100 Outlet housing
200 Inlet housing
301 O-ring
302 Back-up ring
400 Wire filter insert
401 Filter insert
402 Pressure spring
403 Back-up ring
Definition of ports
B1 Media inlet
B2 Media outlet
B1
B2
100 301 302 403 400401 402 200
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TSF2 CNG with male thread and female thread
Exploded view
Pos� Description
100 Outlet housing
200 Inlet housing
301 O-ring
302 Back-up ring
400 Wire filter insert
401 Filter insert
402 Pressure spring
403 Back-up ring
700 O-ring
Definition of ports
B1 Media inlet
B2 Media outlet
B1
B2
700 100 301 302 403 401 400 402 200
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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 Variants
Nominal bore (DN) 4 mm On request
Pressure range PN = 200 bar | PS = 300 bar
Temperature range -40 °C to +120 °C On request
Part materials
Wear-resistant stainless steel,
corrosion-resistant
surfaces
On request
Sealing materials Natural gas compatible On request
Filter element 40 micron On request
Design Incl. Fitting parts
(for tube fitting) On request
Conformities /
Tests /
Approvals
- ECE-approval on request
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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 stor-
age 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.
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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 7.3 Checking the connection for
leak tightness on page 16.
> 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 Commis-
sioning
Mainte-
nance &
Lubrication
-- Suitable open-ended wrench
(suitable for the relevant wrench size) X
-- Foaming leak detection agent X
-- Suitable calibrated torque wrench
(suitable for the corresponding torque) X
W136538 WEH®O-ring picker set*X
-- Vice X
-- Aluminum clamping jaws X
-- Brush X
-- Suitable open-ended wrench
insert
(suitable for the relevant wrench size) X
-- Plug-in adapter 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 de-
pressurized condition.
ÎThe WEH®Product is mounted between two pipe or hose
ends of the media line. Installation of the product may be
carried out in any position, horizontal, vertical, diagonal etc.
Attention: Observe the direction of the flow – the flow
direction is marked on the filter housing (Figure 1).
ÎBefore installation, check if the counterparts are designed to
withstand the assembly data (see Chapter 7.2 Installing the
filter) that WEH determined for this WEH®Product.
Note: The indicated assembly data (tightening torques,
assembly turns etc.) are values that apply only to the compo-
nents delivered by WEH.
Figure 1
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7�2 Installing the filter
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.
ÎUse an open-end wrench to hold the wrench size in place when installing the
WEH®Product.
ÎScrew the media inlet ‘B1’ of the filter housing pressure-tight to the media inlet.
For the tightening torque, please refer to the table below.
Attention: Please note the flow direction marked on the product.
Note: For tube fittings, please note the WEH®Operating instructions "Products with
double ferrule fitting".
ÎScrew the media outlet ‘B2’ of the filter housing pressure-tight to the media outlet.
For the tightening torque, please refer to the table below.
Attention: Please note the flow direction marked on the product.
Note: For tube fittings, please note the WEH®Operating instructions "Products with
double ferrule fitting".
Ports Torque
B1: UNF 9/16”-18*female thread 35 Nm +10%
B2: UNF 9/16“-18*male thread 35 Nm +10%
*acc. to SAE J1926
ÎPlease note the connection size marked on your product.
- Other connection sizes are available on request.
7�3 Checking the connection for leak tightness
ÎApply the operating pressure slowly to the WEH®Product slowly.
ÎUse a foaming leak detection agent to check the WEH®Product and connection
to the product for leak tightness. The test points must be sealed tight without any
bubbles.
Caution: Observe the technical data in Chapter 4 and all appropriate technical
standards and applicable legal requirements.
Attention: Do not use a leak detection spray that contains ammonia, since this could
cause corrosion to the product.
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8. INSPECTION | MAINTENANCE FOR INDUSTRIAL ARTICLES ONLY
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 10.
Please note: Setting appropriate inspection and maintenance guidelines for automotive
applications depending on their mileage is the responsibility of the vehicle’s distributor.
We would be pleased to support you in this - just ask!
Attention: If damage to the WEH®Product or restrictions to its functionality are de-
tected, measures as set out in Chapter 9. Troubleshooting on page 26 must be taken.
Damaged or leaking WEH®Products must be sent to WEH for maintenance.
8�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
7.3 Checking the connection for leak tightness on page 16.
- 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 applica-
tion 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 compo-
nents 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.
ÎObserve the specified tightening torques during maintenance.
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8�2 Maintenance intervals
ÎInspect the WEH®Product at regular intervals depending on the respective operating
conditions, but at least every 3 months. After 20,000 cycles or 3 years at the latest,
depending on what happens first, starting from the date of delivery (invoice/ goods
issue date by WEH or the distributor), the WEH®Product must be sent to WEH for
maintenance.
These intervals can also be significantly shorter, which depends especially on your
individual application/use. Therefore, in case of abnormalities – especially during
regular inspection – send the WEH®Product immediately to WEH for maintenance.
Products that are used at sea or in the vicinity of the sea must be sent to WEH for
maintenance after one year at the latest.
If the WEH®Product is not regularly inspected and sent to WEH for maintenance,
leakage may occur and under certain circumstances this may result in failures
and/or accidents.
8�3 Overview of minimum intervals for inspection and maintenance
No� Inspection
Initial
(before
commis-
sioning
for the 1st
time)
Weekly Monthly
1 Check exterior for damage and dirt X X
2Check filter, media inlet and media outlet
for leackage (see Chapter 7. Installation)X X
3 Check pressure drop across filter section X X
Note: Component arrangement see Chapter 3. Product overview / product description
on page 10.
ÎIf your application requires, set shorter intervals thanindicated above. A significant
shortening of the minimum intervals is particularly necessary if abnormalities are
found during the inspections.
8�4 Maintenance
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 10.
ÎIf you detect any leaks or malfunction, replace the WEH®Product or send it to WEH
for maintenance. Stop using the product immediately.
The following maintenance work for filters in industrial systems may be carried out by
the operator:
ÎInspect the WEH®Product for leak tightness and correct function –ease of move-
ment, sufficient lubrication with substances approved by WEH for this application
(see Chapter 8.5 and Chapter 8.6), wear, contamination, damage.
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8�5 Maintenance TSF2 CNG filter with double ferrule fitting on both sides
Clamp the inlet housing
(Pos. 200) into the vice
with aluminium jaws.
Screw the
outlet housing (Pos. 100)
out of the inlet housing
(Pos. 200) using a double
open-ended spannter
A/F30.
Remove the
back-up ring (Pos. 403)
from the
filter insert (Pos. 401).
Remove the
filter insert (Pos. 401) from
the pressure spring
(Pos. 402)
.
Remove the pressure
spring (Pos. 402) from the
inlet housing (Pos. 200).
Remove the
O-ring (Pos. 301) from the
recess of the
outlet housing (Pos. 100)
using the
WEH®O-ring picker,
part no. E98-101969.
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Remove the
back-up ring (Pos. 302)
from the recess of the
outlet housing (Pos. 100)
using the
WEH®O-ring picker,
part no. E98-101969.
Clean the thread and the
sealing surface from the
inlet housing (Pos. 200).
Clean the thread and the
sealing surface from the
outlet housing (Pos. 100).
Note: Use a clean and lint-
free cloth for cleaning.
Pull the new
back-up ring (Pos. 302)
apart slightly.
Caution: Do not break off
the back-up ring
(Pos. 302).
Insert the new
back-up ring (Pos. 302)
into the recess of the
outlet housing (Pos. 100).
B-B (3 : 1)
B B
The ends of the
slotted
back-up ring
Pos. 302
must interlock
correctly
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