Samson 3711 Service manual

Translation of original instructions
EB 8547 EN
Type3711 Quick Exhaust Valve
Edition April 2020

Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices. The images shown in
these instructions are for illustration purposes only. The actual product may vary.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
([e-mail]).
The mounting and operating instructions for the devices are included
in the scope of delivery. The latest documentation is available on our
website at www.samsongroup.com > Service & Support > Downloads >
Documentation.
Denition of signal words
Hazardous situations which, if not avoided,
will result in death or serious injury
Hazardous situations which, if not avoided,
could result in death or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
!
WARNING
!
NOTICE
!
Note
Tip
EB 8547 EN

Contents
EB 8547 EN
1 Safety instructions and measures ...................................................................4
1.1 Notes on possible personal injury ...................................................................5
1.2 Notes on possible property damage................................................................6
2 Markings on the device .................................................................................7
2.1 Nameplate ....................................................................................................7
2.2 Article code...................................................................................................7
3 Design and principle of operation ..................................................................8
3.1 Technical data ...............................................................................................9
3.2 Dimensions in mm........................................................................................10
4 Measures for preparation............................................................................11
4.1 Unpacking ..................................................................................................11
4.2 Storage.......................................................................................................11
5 Mounting and start-up.................................................................................12
5.1 Mounting position........................................................................................12
5.2 Attachment and hook-up ..............................................................................12
5.3 Pneumatic connections..................................................................................14
5.3.1 Supply air ...................................................................................................14
5.4 Start-up.......................................................................................................14
5.4.1 Fine tuning ..................................................................................................14
6 Servicing.....................................................................................................16
6.1 Maintenance ...............................................................................................16
6.2 Preparation for return shipment.....................................................................16
7 Malfunctions ...............................................................................................17
7.1 Troubleshooting ...........................................................................................17
8 Decommissioning and removal ....................................................................18
8.1 Decommissioning.........................................................................................18
8.2 Removing the quick exhaust valve .................................................................18
8.3 Disposal......................................................................................................18
9 After-sales service .......................................................................................19

4 EB 8547 EN
Safety instructions and measures
1 Safety instructions and measures
Intended use
The Type3711 Quick Exhaust Valve is mounted between the positioner or solenoid valve and
the pneumatic actuator. It is used to vent the actuator more quickly.
The device is designed to operate under exactly dened conditions (e.g. operating pressure,
temperature). Therefore, operators must ensure that the quick exhaust valve is only used in
operating conditions that meet the specications used for sizing the valve at the ordering
stage. In case operators intend to use the quick exhaust valve in other applications or condi-
tions than specied, contact SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the
device for its intended purpose or for damage caused by external forces or any other
external factors.
ÎRefer to the technical data for limits and elds of application as well as possible uses.
Reasonably foreseeable misuse
The Type3711 Quick Exhaust Valve is not suitable for the following applications:
−Use outside the limits dened during sizing and by the technical data
Furthermore, the following activities do not comply with the intended use:
−Use of non-original spare parts
−Performing maintenance activities not specied by SAMSON
Qualications of operating personnel
The quick exhaust valve must be mounted, started up and serviced by fully trained and quali-
ed personnel only; the accepted industry codes and practices are to be observed. Accord-
ing to these mounting and operating instructions, trained personnel refers to individuals who
are able to judge the work they are assigned to and recognize possible hazards due to their
specialized training, their knowledge and experience as well as their knowledge of the appli-
cable standards.
Personal protective equipment
Personal protective equipment is not required to mount or operate the quick exhaust valve.
Modications not permitted
Contact SAMSON before performing any modication to the product. Failure to do so will
render the product warranty void. SAMSON does not assume liability for any resulting per-
sonal injury or property damage.

EB 8547 EN 5
Safety instructions and measures
Responsibilities of the operator
The operator is responsible for proper operation and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions to the operating
personnel and to instruct them in proper operation. Furthermore, operators must ensure that
operating personnel or third parties are not exposed to any danger.
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions as
well as the specied hazard statements, warning and caution notes. Furthermore, the operat-
ing personnel must be familiar with the applicable health, safety and accident prevention
regulations and comply with them.
1.1 Notes on possible personal injury
WARNING
!
Risk of injury due to high pressure inside device.
The quick exhaust valve is pressurized. Improper removal of installed quick exhaust valve
or opening of the valve body can lead to device components bursting and cause serious
injury.
ÎDisconnect the signal pressure before removing an installed quick exhaust valve or
opening the valve body.
Risk of damage to hearing due to loud noise.
Without a noise-reducing element screwed into the exhaust port, the quick exhaust valve
generates a loud noise on venting.
ÎWear hearing protection.

6 EB 8547 EN
Safety instructions and measures
1.2 Notes on possible property damage
NOTICE
!
Risk of damage to the quick exhaust valve due to incorrect mounting position.
The incorrect mounting position may allow dirt or other foreign particles to enter the
exhaust port (EXH) and lead to malfunctioning or damage.
In versions with silencers, the silencer must be protected against icing up and/or snow.
ÎMount the quick exhaust valve with the exhaust port facing downward or to the side.
Alternatively, t a suitable cover to protect it against adverse weather conditions.
Risk of damage to the quick exhaust valve due to lack of protection against contami-
nation.
In versions with silencers, the silencer must be protected against contamination, icing up
and/or snow.
ÎTake suitable precautions to protect the silencer against dirt, icing up and/or snow.
Risk of damage to the quick exhaust valve due to incorrect hook-up.
The quick exhaust valve is not suitable for combination with a volume booster.
ÎDo connect the quick exhaust valve in combination with a volume booster.

EB 8547 EN 7
Markings on the device
2 Markings on the device
2.1 Nameplate
3711-
SAMSON
Var.-ID:
3- Made in France
G
1
2
4
3
1 Type number (see article code)
2Conguration ID
3 Production ID
4 Month/year
2.2 Article code
Quick exhaust valve Type3711- xxxxxxx0
Version
Standard version 0
Body material
Aluminum 0
Stainless steel 1
Pneumatic connection
G¾ (EXH, OUT) · G
3
/
8
(SIG) 1
Silencer
With silencer 1
Without silencer 2
Compatibility with paint
Standard 1
Ambient temperature
–40 to +80°C 1
Certicates
Without 0
Special versions
Without 0

8 EB 8547 EN
Design and principle of operation
3 Design and principle of oper-
ation
The quick exhaust valve is mounted between
the positioner or solenoid valve and the
actuator. It is used to vent the actuator more
quickly. When a control pressure (SIG) is
applied, the diaphragm plate (1) rests on the
seat (2), closing the valve. The check valve
allows the air to ow through the output
(OUT) to the actuator while the control
pressure rises. No air is vented.
The check valve (3) closes when the control
pressure decreases. After the actuator
pressure and control pressure reach a certain
differential pressure, the diaphragm plate (1)
releases the seat of the exhaust port (EXH),
causing the actuator to be vented quickly.
The adjustable restriction screw (4) prevents
the air from being exhausted quickly during
normal control mode and is used to set the
venting characteristic. The access to the
restriction screw is secured by a cotter pin
inserted into the hole (5).
4
312
5
SIG
EXH
OUT
1 Diaphragm plate
2 Seat
3 Check valve
4 Restriction screw
5Hole for cotter pin
Threaded connections:
SIG G
3
/
8
OUT G¾
EXH G¾
Fig.1: Sectional drawing of Type 3711 Quick Exhaust Valve including ports

EB 8547 EN 9
Design and principle of operation
3.1 Technical data
Type3711
Operating pressure 0 to 7bar
Differential pressure between supply and exhaust 55% of control pressure
Permissible leakage at 6bar ≤25 ln/h
Permissible ambient temperature range –40 to +80°C
Closing hysteresis of check valve < 0.02bar
Conformity
Weight kg (approx.) 0.5 1)
Air quality according to ISO8573-1
Maximum particle size and density Class 4
Oil content Class 3
Pressure dew point Class 3 or at least 10 K below the lowest ambient
temperature to be expected
Flow coefcients
KVS Exhaust 10.0 1)
KVS Supply (check valve) 1.3 (restriction screw closed)
1.9 (restriction screw open)
KVS Bypass (restriction screw) Max. 0.75
Materials
Body Aluminum with corrosion
protection and epoxy
powder coating
Stainless steel, 1.4409
Cover
Restriction, screw tting, cotter pin Stainless steel
Check valve VMQ
Diaphragm VMQ
Diaphragm plate Aluminum with
corrosion protection Stainless steel 1.4404
Seals VMQ
Accessories
Silencers Order number: 1402-1148
1) Without silencer

10 EB 8547 EN
Design and principle of operation
3.2 Dimensions in mm
85
SW 32
107
57
59.5 47.5 61
SW 24 SW 32

EB 8547 EN 11
Measures for preparation
4 Measures for preparation
After receiving the shipment, proceed as fol-
lows:
1. Check the scope of delivery. Compare
the shipment received with the delivery
note.
2. Check the shipment for transportation
damage. Report any transportation dam-
age.
4.1 Unpacking
Do not remove the packaging if the quick
exhaust valve is to be transported to another
location or kept in storage.
Before mounting the quick exhaust valve,
proceed as follows:
1. Remove the packaging from the quick
exhaust valve.
2. Dispose of the packaging in accordance
with the valid regulations.
Risk of damage to the quick exhaust valve
due to foreign particles entering the valve.
Do not remove the protective lm until imme-
diately before mounting.
4.2 Storage
Risk of damage to the quick exhaust valve
due to improper storage.
Observe the storage instructions. Contact
SAMSON, if need be.
Storage instructions
−Protect the quick exhaust valve against
external inuences (e.g. impact, shocks,
vibration).
−Do not damage the corrosion protection
(coating).
−Protect the quick exhaust valve against
moisture and dirt. In damp spaces, pre-
vent condensation. If necessary, use a
drying agent or heating.
−Observe the storage temperature from
–40 to +80°C.
−Pack the quick exhaust valve in airtight
packaging.
Note
NOTICE
!
NOTICE
!

12 EB 8547 EN
Mounting and start-up
5 Mounting and start-up
Malfunction due to dirt blocking the quick
exhaust valve.
No substances must be allowed to enter the
device during mounting, transport or stor-
age.
5.1 Mounting position
Risk of damage to the quick exhaust valve
due to incorrect mounting position.
Do not mount the quick exhaust valve with
the exhaust port facing upward.
ÎMount the quick exhaust valve with the
exhaust port (EXH) facing downward or
to the side.
ÎIf the quick exhaust valve can become
covered in snow, iced up or dirt can
collect in the device, it must be mounted
with the exhaust side facing downward
or protected by a suitable xture/cover.
5.2 Attachment and hook-up
Risk of damage to the quick exhaust valve
due to it being combined with a volume
booster.
Do connect the quick exhaust valve in combi-
nation with a volume booster.
Risk of damage or malfunction of the quick
exhaust valve due to lack of protection
against dirt, icing up or snow.
In versions with silencers, take suitable pre-
cautions to protect it against dirt, icing up
and/or snow.
Follow the instructions below during mount-
ing:
ÎTo vent the actuator as quickly as possi-
ble, the quick exhaust valve must be
mounted as close to the pneumatic actu-
ator as possible.
ÎMount the quick exhaust valve between
the positioner or solenoid valve and the
pneumatic actuator (see Fig.2).
ÎMount the quick exhaust valve in such a
way that the compressed air ows
through the valve in the direction indicat-
ed by the arrows shown in Fig.2.
ÎHook-up with a volume booster is not
permissible.
ÎSelect piping and screw ttings with the
largest possible ow rate.
NOTICE
!
NOTICE
!
NOTICE
!
NOTICE
!

EB 8547 EN 13
Mounting and start-up
SIG
EXH
OUT
1 Positioner
2 Actuator
3 Solenoid valve
4Quick exhaust valve
5 Silencer
6 Restriction
SIG
OUT EXH
1
2
3
4
5
6
Hook-up including
purging of actuator spring
chamber:
1
2
3
4
5
SIG
OUT EXH
Standard hook-up:
Inscription Port
SIG Control pressure
OUT Output
EXH Exhaust
Ports:
Fig.2: Hook-ups and connections

14 EB 8547 EN
Mounting and start-up
5.3 Pneumatic connections
Risk of damage to hearing due to loud noise.
If a noise-reducing element is not screwed
into the exhaust port, the quick exhaust valve
generates a loud noise on venting ÎWear
hearing protection.
The ports of the quick exhaust valve are
labeled (abbreviated) on the valve and
designed as G threads:
Port Inscription Thread
Control
pressure SIG G
3
/
8
Output OUT G¾
Exhaust EXH G¾
The tapped holes with G threads correspond
with the form X of DIN3852-2 in the normal
version.
ÎBefore mounting, all pipes must be free
of dirt and foreign matter.
ÎMount the screw ttings properly using
suitable tools and sealant to prevent
thread galling (seizure).
ÎThe use of Teon tape as a sealant for
the ttings is not permitted.
ÎTighten all screw ttings securely.
5.3.1 Supply air
The quality of the supply air must meet the
requirements of ISO8573-1 concerning par-
ticle size, oil content and pressure dew point
(see Technical data in section3.1).
5.4 Start-up
Risk of damage to hearing due to loud noise.
Wear hearing protection.
Check that all components are mounted
properly before every start-up.
ÎBefore start-up, mount the quick exhaust
valve between a positioner or solenoid
valve and a pneumatic actuator as de-
scribed in section5.1 and section5.2.
5.4.1 Fine tuning
The dynamic response of the quick exhaust
valve can be adjusted at the restriction screw
(see Fig.3). In particular when a hook-up in-
cludes a positioner, this can help prevent air
being exhausted quickly unintentionally
during normal control mode.
Perform ne tuning:
1. Remove the cotter pin.
2. Use a 4mm hex key to undo the restric-
tion screw until the quick exhaust valve
does not vent quickly during normal con-
trol mode.
3. Check whether the emergency venting of
the actuator is guaranteed. Slightly screw
WARNING
!
Note
WARNING
!

EB 8547 EN 15
Mounting and start-up
in the restriction screw again, if neces-
sary.
4. Secure the access to the restriction screw
with the cotter pin.
Access to the restriction screw
(secured by the cotter pin)
Fig.3: Restriction screw for ne tuning

16 EB 8547 EN
Servicing
6 Servicing
The quick exhaust valve was checked by
SAMSON before it left the factory.
−The product warranty becomes void if
service or repair work not described in
these instructions is performed without
prior agreement by SAMSON's after-sales
service.
–Only use original spare parts by
SAMSON, which comply with the original
specications.
6.1 Maintenance
The Type3711 Quick Exhaust Valve requires
no maintenance.
We recommend regularly checking whether
the device is leak-tight and whether the pipe
screw tting is screwed on properly.
6.2 Preparation for return ship-
ment
Defective quick exhaust valves can be re-
turned to SAMSON for repair.
Proceed as follows to return devices to
SAMSON:
1. Put the control valve out of operation.
See associated valve documentation.
2. Remove the quick exhaust valve (see sec-
tion8).
3. Proceed as described on our website at
uwww.samsongroup.com > Service &
Support > After-sales Service > Returning
goods.
Note
Note
Tip

EB 8547 EN 17
Malfunctions
7 Malfunctions
7.1 Troubleshooting
Malfunction Leakage between quick exhaust valve and pneumatic connections
Possible reasons Pipe ttings are loose.
Recommended action Î Check whether pipe screw tting leaks and is screwed on properly.
ÎIf other malfunctions occur, contact SAMSON's After-sales Service:
[e-mail]

18 EB 8547 EN
Decommissioning and removal
8 Decommissioning and
removal
Risk of bursting in pressure equipment.
Control valves, mounting parts and pipelines
are pressure equipment. Improper opening
can lead to bursting of the valve.
−Before starting any work on the control
valve, depressurize all plant sections
affected as well as the valve.
–Observe the valve's safety instructions.
8.1 Decommissioning
To decommission the quick exhaust valve for
maintenance work or disassembly, proceed
as follows:
1. Disconnect the supply pressure of the
pneumatic actuator.
2. Disconnect the supply air.
3. If necessary, allow valve components to
cool down or heat up.
8.2 Removing the quick
exhaust valve
1. Put the quick exhaust valve out of opera-
tion (see section8.1).
2. Undo the threaded connections.
3. Remove the quick exhaust valve from the
pipeline.
8.3 Disposal
We are registered with the Ger-
man national register for waste
electric equipment (stiftung ear)
as a producer of electrical and
electronic equipment,
WEEE reg. no.: DE 62194439
ÎObserve local, national and internation-
al refuse regulations.
ÎDo not dispose of components, lubricants
and hazardous substances together with
your other household waste.
On request, we can appoint a service pro-
vider to dismantle and recycle the product.
WARNING
!
Tip

EB 8547 EN 19
After-sales service
9 After-sales service
Contact SAMSON's After-sales Service for
support concerning service or repair work or
when malfunctions or defects arise.
E-mail address
You can reach our after-sales service at the
following e-mail address.
[e-mail]
Addresses of SAMSONAG and its subsid-
iaries
The addresses of SAMSON AG, its subsid-
iaries, representatives and service facilities
worldwide can be found on our website
(www.samsongroup.com) or in all SAMSON
product catalogs.
Required specications
Please submit the following details:
−Order number and position number in
the order
−Type, serial number, device version

2020-05-19 · English
SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: [phone] · Fax: [phone]
[email protected]om · www.samsongroup.com
EB 8547 EN