Samson 2488 N, 5857 Mounting And Operating Instructions
Mounting and
Operating Instructions
EB 3136 EN
Translation of original instructions
Edition December 2017
Type2488N/5857
Pressure-independent Control Valve (PICV)
Type2488N/5857
2 EB 3136 EN
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.
Î For the safe and proper use of these instructions, read them carefully and keep them for
later reference.
Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service
Department (aftersalesservice@samson.de).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
(www.samson.de) > Product documentation. You can enter the document
number or type number in the [Find:] eld to look for a document.
Denition 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
Contents
EB 3136 EN 3
1 Safety instructions and measures ...................................................................4
1.1 Notes on possible severe personal injury .........................................................6
1.2 Notes on possible personal injury ...................................................................7
1.3 Notes on possible property damage ................................................................7
2 Markings on the device .................................................................................8
2.1 Nameplate for Type2488N Valve .................................................................. 8
3 Design and principle of operation ..................................................................9
3.1 Technical data .............................................................................................10
4 Measures for preparation ............................................................................14
4.1 Unpacking ..................................................................................................14
4.2 Transporting and lifting ................................................................................14
4.3 Storage .......................................................................................................15
4.4 Preparation for installation ............................................................................16
5 Mounting and start-up .................................................................................16
5.1 Mounting position ........................................................................................16
5.2 Additional ttings .........................................................................................17
5.3 Mounting the actuator ..................................................................................17
5.4 Electrical connection .....................................................................................18
5.5 Start-up ....................................................................................................... 19
6 Operation ...................................................................................................20
6.1 Adjusting the set points .................................................................................20
6.1.1 Flow rate .....................................................................................................20
7 Servicing.....................................................................................................21
7.1 Preparation for return shipment .....................................................................22
7.2 Ordering spare parts and operating supplies .................................................23
8 Malfunctions ...............................................................................................23
8.1 Decommissioning .........................................................................................24
8.2 Disposal ......................................................................................................24
9 Appendix ....................................................................................................24
9.1 After-sales service ........................................................................................24
9.2 Certicates ..................................................................................................25
4 EB 3136 EN
Safety instructions and measures
1 Safety instructions and measures
Intended use
The Type2488N/5857 Pressure-independent Control Valve (PICV) is intended for ow control of liquids up to 110°C. The Type2488N/5857 is mainly used in district heating supply
networks. The regulator and actuator are designed to operate under exactly dened condi-
tions (e.g. operating pressure, process medium, temperature). Therefore, operators must ensure that the regulator and actuator are only used in operating conditions that meet the spec-
ications used for sizing the devices at the ordering stage. In case operators intend to use the
devices in other applications or conditions than specied, 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.
Î Refer to the technical data and nameplate for limits and elds of application as well as
possible uses.
Reasonably foreseeable misuse
The regulator is not suitable for the following applications:
− Use outside the limits dened 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 service and repair work not described in these instructions
Qualications of operating personnel
The regulator must be mounted, started up, serviced and repaired by fully trained and qualied personnel only; the accepted industry codes and practices are to be observed. According 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.
EB 3136 EN 5
Safety instructions and measures
Personal protective equipment
We recommend wearing the following protective equipment depending on the process medium:
− Protective clothing, gloves and eyewear in applications with hot, cold and/or corrosive
media
− Wear hearing protection when working near the valve.
Î Check with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions, conversions or other modications of the product are not authorized by
SAMSON. They are performed at the user's own risk and may lead to safety hazards, for
example. Furthermore, the product may no longer meet the requirements for its intended use.
Warning against residual hazards
To avoid personal injury or property damage, plant operators and operating personnel must
prevent hazards that could be caused in the regulator by the process medium, the operating
pressure or by moving parts by taking appropriate precautions. They must observe all haz-
ard statements, warning and caution notes in these mounting and operating instructions, especially for installation, start-up and service work.
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 as well as the
referenced documents to the operating personnel and to instruct them in proper operation.
Furthermore, the operator must ensure that operating personnel or third persons 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 referenced documents and observe the specied hazard statements, warnings
and caution notes. Furthermore, the operating personnel must be familiar with the applicable
health, safety and accident prevention regulations and comply with them.
6 EB 3136 EN
Safety instructions and measures
Referenced standards and regulations
The regulators comply with the requirements of the European Pressure Equipment Directive
2014/68/EU. Devices with a CE marking have an EU declaration of conformity, which includes information about the applied conformity assessment procedure. This EU declaration
of conformity is included in the Appendix of these instructions (see section9.2).
Non-electric valve versions whose bodies are not lined with an insulating material coating do
not have their own potential ignition source according to the risk assessment stipulated in
EN13463-1:2009, section5.2, even in the rare incident of an operating fault. Therefore,
such valve versions do not fall within the scope of Directive 2014/34/EU.
Î For connection to the equipotential bonding system, observe the requirements specied in
section 6.4 of EN60079-14 (VDE0165 Part 1).
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− Mounting and operating instructions for the mounted actuator, e.g. uEB5857 for
Type5857 Actuator
1.1 Notes on possible severe personal injury
DANGER
!
Risk of bursting in pressure equipment.
Valves and pipelines are pressure equipment. Improper opening can lead to device
components bursting.
Î Before starting any work on the device, depressurize all plant sections concerned
as well as the valve.
Î Drain the process medium from all the plant sections concerned as well as the
valve.
Î If necessary, install a suitable overpressure protection in the plant section.
Î Wear personal protective equipment.
EB 3136 EN 7
Safety instructions and measures
1.2 Notes on possible personal injury
WARNING
!
Risk of personal injury due to residual process medium in the valve.
While working on the valve, residual process medium can escape and, depending on
its properties, may lead to personal injury, e.g. (chemical) burns.
Î If possible, drain the process medium from all the plant sections concerned and the
valve.
Î Wear protective clothing, safety gloves and eyewear.
Risk of burn injuries due to hot or cold components and pipelines.
Depending on the process medium, valve components and pipelines may get very hot
or cold and cause burn injuries.
Î Allow components and pipelines to cool down or heat up.
Î Wear protective clothing and safety gloves.
1.3 Notes on possible property damage
NOTICE
!
Risk of valve damage due to contamination (e.g. solid particles) in the pipeline.
The plant operator is responsible for cleaning the pipelines in the plant.
Î Flush the pipelines before start-up.
Î Observe the maximum permissible pressure for valve and plant.
Risk of valve damage due to unsuitable medium properties.
The valve is designed for process media with dened properties.
Î Only use process media specied for sizing the valve.
8 EB 3136 EN
Markings on the device
2 Markings on the device
2.1 Nameplate for Type2488N Valve
Nameplate for Type2488N Valve
1 Model number and conguration
ID
2 Order number or year of
manufacture
3 Type designation
4 Flow rate set point range in m³/h
5 Differential pressure at the
restriction in bar
6 Max. perm. differential pressure
Δp in bar
7 Flow coefcient K
VS
8 Max. permissible temperature in °C
9 Nominal pressure PN
1 2
3 4
5 6
7 8 9
Nameplate of Type5857 Actuator
1 Conguration ID
2 Serial number
3 Thrust
4 Rated travel
5 Transit time for rated travel
6 Power supply
7 Rated frequency
8 Power consumption
9 Input signal
10 Firmware version
Made in Germany
754
6
8
SAMSON 5857
Electric Actuator
s: t: f:U: P
:
Var.-ID
Serial-No.
1
2
F: 3
Made in Germany
94
6
8
SAMSON 5857
Electric Actuator
with digital positioner
s: In: U: P
:
Var.-ID
Serial-No.
1
Firmware-Version: 10
2
F: 3
Three-step version
Version with digital positioner
Fig.1: Nameplates for Type2488N Valve and Type5857 Actuator
EB 3136 EN 9
Design and principle of operation
3 Design and principle of oper-
ation
Î Refer to Fig.2
The pressure-independent control valve
(PICV) consists of the Type2488N Flow
Regulator and the Type5857 Electric Actuator. The valve is tted with a connecting
piece for connection of an electric actuator.
As a result, it is possible to transmit the control signal of an electric control device to
achieve additional temperature control by
changing the restriction position. The medi-
um ows through the valve in the direction
indicated by the arrow on the valve body.
The ow rate is determined by the area re-
leased by the valve plug (3) and the adjustable restriction (11).
The installed positioning spring (5) determines the differential pressure across the re-
striction of 0.2bar. The pressure upstream of
the restriction (11) is transmitted over the
control line (7) to the upstream pressure side
of the actuator. The pressure downstream of
the restriction acts on the low-pressure side
of the operating diaphragm (9) through a
hole in the valve plug. The differential pressure generated at the restriction is converted
into a positioning force by the operating diaphragm. This force is used to move the valve
plug depending on the force of the position-
ing spring (5). The ow rate is adjusted at
the set point screw (13).
1 Valve body
2 Seat
3 Plug
4 Plug stem
5 Positioning spring
6 Diaphragm actuator
7 Control line for upstream pressure
8 Upstream side
9 Operating diaphragm
10 Downstream side
11 Restriction
12 Restriction stem
13 Set point screw for ow control
14 Connecting piece
15 Spring
16 Type5857 Electric Actuator
17 Coupling nut
(max. 20Nm tightening torque)
18 Actuator stem
19 Manual adjuster
1
11
12
17
18
2
6
7
4
5
3
14
16
13
8
9
10
15
19
Fig.2: Functional diagram
Loading...