Explosion-Proof Diverter valves
DMN-Westinghouse
Operation instructions + Maintenance
Safety instructions
PTD-II
PTD-sp
FDV
FVV
BTD
GPD
TDV
M-TDV
2-TDV
3-TDV
ATEX –Approval
II 1D / 2GD c
II 1D / 3GD c
II 1D / - c
IMPORTANT: Read before commissioning :
• Operation instructions Explosion-Proof Diverter valves.
• Operation instructions Standard Diverter valves. (Appendix)
and then store carefully for future use !
Customer
:
Purchase order no.
:
DMN-Westinghouse Order no.
:
Type
:
Serial no.
:
Year of construction
:
DMN-Westinghouse
Explosion-proof Diverter valves
Directive 94/9/EG
•
Notified body EC-Type examination.
EXAM
BBG Prüf- und Zertifizier GmbH
Dinnendahlstr. 9
44809 Bochum
Germany
Certificate number BVS 03 ATEX H 046 X.
•
Notified body in charge of quality surveillance.
LCIE
33, Avenue du Général Leclerc
92260 Fontenay aux Roses
France
Identification number 0081
II 1D/ 2 GD c
1D Internal Diverter valve
2 GD External Diverter valve
Zone 20-21-22
Zone 1-21
II 1D/ 3 GD c
1D Internal Diverter valve
3 GD External Diverter valve
Zone 20-21-22
Zone 2-22
II 1D/ - c
1D Internal Diverter valve
- External Diverter valve
Zone 20-21-22
No Zone
DMN Machinefabriek Noordwykerhout B.V.
3, Gieterij
2211 WC Noordwijkerhout
The Netherlands
www.dmn.info
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Explosion-proof Diverter valves
General
-
For the promotion of the life span and correct functioning of DMN-Westinghouse
Diverter valves we advise you to respect these operation instructions and to
carry out maintenance work accordingly.
Should there be any problems, please contact our technical sales department.
No liability is accepted for damage and malfunction caused by non-observation
of these operation instructions, modification of the diverter valve without written
approval of DMN Machinefabriek Noordwykerhout B.V. (hereinafter called
DMN). DMN does not accept any liability for damage or accidents resulting from
improper use.
Copyright
Copyright © DMN Machinefabriek Noordwijkerhout B.V. All rights reserved. All
information including drawings shown in this manual are covered by copyright. No part
of this manual may be reproduced or published in any form or in any way,
electronically, by print, photo print, microfilm or any other means without prior written
permission from DMN.
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Explosion-proof Diverter valves
Contents
Page
1. Safety instructions Diverter valves
1.1 General safety instructions
1.2 Symbols
1.3 Responsibilities of management and maintenance personnel
1.4 Applying the safety instructions when installing a valve
1.5 Applying the safety instructions when the valve is in operation
1.6 Applying the safety instructions during maintenance and repair
1.7 Safety instructions for use in potentially explosive atmosphere
5
5
5
6
6
6
6
7
2. Explosion-Proof Diverter valves
2.1 Atex approved equipment
2.2 Type designation
2.3 Intended use
8
8
11
12
3. Installing the Diverter valve in a potentially explosive atmosphere
3.1 FDV-FVV Diverter valves
3.2 TDV Diverter valves
3.3 2-3 TDV Diverter
3.4 PTD-II / PTD-sp Diverter valves
3.4.1 Connection diagram for the plug type diverter
Terminal box connection static seal Zone 1-21
Terminal box connection static seal Zone 2-22
Terminal box connection inflatable seal Zone 2-22
3.5 Accessories
12
13
13
14
15
15
18
4. Dismantling, assembling and adjusting instructions
19
5. Inspection and maintenance
5.1 Maintenance every 6 months or after 4,000 operating hours
20
20
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Explosion-proof Diverter valves
1
Safety instructions Diverter valves
1.1.
General safety instructions
The safety instructions as described below should be followed by the user when:
-
installing the valve;
maintaining and repairing the valve.
The safety instructions should be read carefully both by management and maintenance
personnel before carrying out the above operations.
Failure to follow these safety instructions, may result in one or more of the following:
-
the safety of the maintenance personnel could be endangered;
the valve may not function correctly;
the system which contains the valve may be damaged.
Modifications and alterations to the product are not permitted other than by
DMN trained personnel, to ensure safe operation.
1.2.
Symbols
Hazard.
Possible consequences: Severe or fatal injuries.
Hazardous situation.
Possible consequences: Slight or minor injuries.
STOP
Harmful situation.
Possible consequences: Damage to the Diverter valve and the
environment.
Important Notes on Explosion Protection.
Remark.
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1.3.
Explosion-proof Diverter valves
Responsibilities of the management and maintenance personnel
The management must ensure that:
-
the maintenance personnel observe the safety instructions, as described in this
document;
all available means which are necessary for working according to the safety
instructions are present;
the maintenance personnel possess the necessary skills.
Maintenance personnel should follow these safety instructions when carrying out
installation, repair and maintenance.
1.4.
Applying the safety instructions when installing a Diverter valve
After removing the packaging material it is possible to reach the inlet of the diverter.
During this operation do not operate Diverter.
Do not alter, remove or paint the type specification plates of the valve, drive unit or
fitted switches.
1.5.
Applying the safety instructions when the valve is in operation
During operation of the diverter it must not be possible to reach moving parts like the
plug, flap or tube.
While the valve is in operation no maintenance or repair work must
be carried out.
1.6.
Applying the safety instructions during maintenance and repair work
When product qualities necessitate supplementary safety instructions and wearing
protective clothes, it is obligatory to follow the local safety instructions.
Before maintenance and repair work is carried out:
-
electrical supply to the solenoid valve must be isolated.
air pressure to pneumatic cylinder must be isolated.
After the maintenance and repair work has been carried out, all safety parts removed
during the work should be re-assembled and their operation should be checked.
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1.7.
Explosion-proof Diverter valves
Safety instructions for use in potentially explosive atmosphere
Explosive concentrations of dust can lead to severe or fatal injuries
in connection with hot surfaces, parts under power and moving
parts of the Diverter valve.
Installation, connection, start-up, maintenance and repair work on
the Diverter valve may only be performed by a qualified specialist
while taking the following into account:
• these instructions
• the warning and information signs on the Diverter valve
• currently valid national / regional regulations
(Explosion protection, Safety, accident prevention)
Check if there are any potentially explosive atmosphere, oils,
acids, gases, vapours, radiation etc. present during installation,
connection, start-up, maintenance and repair work.
Remove dust deposits when ignition sources (e.g. sparks through
grinding) can be created during installation, connection, start-up,
maintenance and repair work.
The Diverter valves are intended for industrial systems and may only be used in
accordance with the information provided in DMN technical documentation and the
information listed on the nameplate.
They comply with the applicable standards and regulations and meet the
requirements of the directive 94/9/EC.
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Explosion-proof Diverter valves
2
Explosion-proof Diverter valves
2.1
ATEX approved equipment.
The following table shows the valve types that can be used as equipment:
Executions
Pneumatic
Actuator
Cylinder
Type
Size
PTD-II
PTD-sp
50-65-80-100-125-150-200
150-175-200-250-300-350
FDV-P
50-65-80-100-125-150
FDV-F 50-65-80-100-125-150-200-250
FVV-P
50-65-80-100-125-150
FVV-F
50-65-80-100-125-150
1A
2A
3A
1C
2C
3C
BTD
65-80-100-125-150-200-250
1A
GPD
150-200-250-300
1A
2A
3A
TDV
40-50-65-80-100-125-150-200
M-TDV
40-50-65-80-100-125-150-200
Type
Size
Seal
2-TDV
40-50-65-80-100-125-150
2STA
3STA
2DYN
3DYN
3-TDV
40-50-65-80-100-125-150
2DYN
3DYN
Hand
operation
Electrical
Actuator
1H
2H
3H
1E
2E
3E
1H
2H
3H
1E
2E
3E
Executions
These valves correspond to the design requirements of device group II
II 1D/ 2 GD c
1D Internal Diverter valve
2 GD External Diverter valve
Zone 20-21-22
Zone 1-21
II 1D/ 3 GD c
1D Internal Diverter valve
3 GD External Diverter valve
Zone 20-21-22
Zone 2-22
II 1D/ - c
1D Internal Diverter valve
- External Diverter valve
Zone 20-21-22
No Zone
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Explosion-proof Diverter valves
Ambient temperature
Operate Diverter valves at an ambient temperature of –20°C to
+40°C.
Conveying air temperature
The conveying air must not exceed a temperature of +70°C.
Surface temperature
The surface temperature of the diverter valve depends on the temperature of the
product to be handled. The recommended maximum product temperature for the
diverter valve is +170°C depending on the type of diverter valve.
The temperature increase of the valve by failure is ∆T=20 K.
Marked temperature if equipment is subject to type testing (EN-13463-1)
∆T=20 K = measured maximum surface temperature + 5 K
The diveter valve without drive, solenoid valve, proximity switch, etc.
Maximum surface temperature of the diverter valve without drive, solenoid valve,
proximity switch, etc. is 90°C/T5.
(calculation: conveying air 70°C +(∆T=20 K) =90°C)
If the temperature of the product to be handled can is higher then 70°C than this will
influence the surface temperature of the diverter valve. (see table)
Product temperature
70°C
80°C
90°C
100°C
110°C
115°C
120°C
130°C
140°C
150°C
160°C
170°C
Max. surface temperature
90°C
T5
100°C
110°C
T4
120°C
130°C
135°C
140°C
T3
150°C
160°C
170°C
180°C
190°C
Bearing and shaft seal
Diverter with standard bearing
and shaft seal
GPD Diverter with special HTbearing and PTFE lip seal
The diverter is equipped with a Explosion-proof solenoid valve, inductive
proximity switches, terminal box, etc. with a marking category 2 respectively
category 3.
The Max. surface temperature depends on the type.
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Explosion-proof Diverter valves
Relationship of the maximum surface temperature of the equipment and the
minimum ignition temperature of dust cloud and dust layer.
Dust cloud.
Maximum surface temperature = 2/3 x Minimum Ignition Temperature
Dust layer up to 5mm.
Maximum surface temperature = Smouldering Temperature – 75 K
The plant operator must ensure that any possible dust accumulation does not
exceed a maximum thickness of 5 mm in accordance with EN50281-1-2.
There must be no flammable solvents within the dust.
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2.2
Explosion-proof Diverter valves
Type designation
Example Diverter valve
Type
Size
FDVF
150
Type
PTD-II
PTD-sp
FDVP
FDVF
FVVP
FVVF
BTD
GPD
TDV
MTDV
2-TDV
3-TDV
Material of
construction
Execution
Material of
construction
2
Execution
C
40
50
65
80
100
125
150
200
250
300
350
Size
1
2
3
A
C
E
H
STA
DYN
Cast Iron
Aluminium
Stainless steel
Pneumatic Actuator
Pneumatic cylinder
Electrical Actuator
Hand operation
Static seal
Inflatable seal
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2.3
Explosion-proof Diverter valves
Intended use
The DMN-Westinghouse Diverter valves has been specially designed to re-route
powders and pellets in pneumatic conveying systems, in a potentially explosive
atmosphere.
The technical specifications, General assembly and parts list of the Diverter valve
are in a separate Operation and maintenance instructions. (see appendix)
STOP
Material of construction of the Diverter valve must be suited
for the product to be handled.
3 Installing the Diverter valve in a potentially explosive atmosphere.
Remove all packing material and preservatives.
Check for any transport damage.
Check valve interior is free from foreign material.
Check if there are any potentially explosive atmosphere, oils,
acids, gases, vapours, radiation etc. present during installation.
Please follow safety instructions of chapter 1 when installing the
Diverter valve in a potentially explosive atmosphere.
Does the following information on the nameplate of the Diverter
valve correspond to the potentially explosive on-site atmosphere.
Pay specific attention to:
• Unit group
• Explosion-proof category
• Dust- or Gas area
• Temperature class
• Maximum surface temperature
Do not operate Diverter.
Danger to fingers and hands.
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STOP
Explosion-proof Diverter valves
When installing the valve make sure it is not unevenly loaded by
external forces or vibrations.
Always ground the Diverter valve, use the earth-stud.
Check that the electrical leakage resistance is less than 106 Ω.
3.1
FDV-FVV Diveter valve.
FDV-P with Pipe bonded in Body.
Check that the electrical leakage resistance is less than 106 Ω
between pipe and Body.
FDV Diverter with Pneumatic cylinder.
The drive must be protected by a guard.
3.2
TDV Diverter valve.
Earth the steel spiral of the tube at both end.
Check that the electrical leakage resistance is less than 106 Ω
between connection tube.
If the material of the tube is non-conductive then the distance
between the steel spirals must be <30mm and the material
thickness from the inner tube to the spiral must be <2mm.
The drive must be protected by a guard.
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3.3
Explosion-proof Diverter valves
2-3 TDV
The 2-TDV unit is driven by means of an pneumatic actuator actuated by a solenoid
valve.
Indication of pipe changeover is by means of position confirmation switches in control
box.
The 3-TDV is driven by means of an pneumatic 3-position actuator and a pneumatic
cylinder for to get a perfect alignment of the swan-neck and selected nozzle.
Connections for all electrical components are in a terminal box and control box.
Indication of pipe changeover is by means of position confirmation switches in control
box.
Moving parts must be protected by a guard.
When assembling the protection guard make sure that no ignition
sources (e.g. sparks through contact) can be created.
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3.4
Explosion-proof Diverter valves
PTD-II / PTD-sp Diverter valve.
The PTD-II plug type diverter is equipped as standard with a pneumatic cylinder,
electrically operated 5/2 solenoid-solenoid valve, inductive proximity switches and
terminal box.
The PTD-sp plug type diverter is equipped as standard with a pneumatic actuator,
electrically operated 5/2 bistable valve, inductive proximity switches and terminal box.
3.4.1 Connection diagram for the plug type diverter
Terminal box connection static seal Zone 1-21.
Solenoid valve.
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Position switches.
Terminal box connection static seal Zone 2-22.
Solenoid valve.
Position switches.
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Terminal box connection inflatable seal Zone 2-22
Solenoid valve / pressure switch.
Position switches.
After assembly test run the valve.
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3.5
Explosion-proof Diverter valves
Accessories
II 1D/ 2 GD c
1D Internal Diverter valve
2 GD External Diverter valve
Zone 20-21-22
Zone 1-21
II 1D/ 3 GD c
1D Internal Diverter valve
3 GD External Diverter valve
Zone 20-21-22
Zone 2-22
II 1D/ - c
1D Internal Diverter valve
- External Diverter valve
Zone 20-21-22
No Zone
Only use
• Solenoid valve
• Proximity switch
• Pressure switch
• Terminal box
• Electrical Actuator
that are CE marked and with a ATEX-approval equal to or better
than that of the diverter valve.
Please study the operation instructions supplied by the
manufacturer.
Does the following information on the nameplate of the
• Solenoid valve
• Proximity switch
• Pressure switch
• Terminal box
• Electrical Actuator
correspond to the potentially explosive on-site atmosphere.
Pay specific attention to:
• Unit group
• Explosion-proof category
• Dust- or Gas area
• Temperature class
• Maximum surface temperature
Drive
According to the ATEX directive the maximum velocity must not be
higher then 1 m/s and the maximum power of the motor gear unit is
not higher then 4 kW.
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Explosion-proof Diverter valves
Dismantling and assembly instructions Diverter valve
Also read the attached standard operation instructions for the
Diverter valve
Dismantling and assembly instructions for the valve are in the attached standard
operation instructions.
In case of repair work to the valve, please follow safety
instructions of chapter 1.
-
Turn off the electrical supply, lock the switch and/or remove the
fuses;
Close the compressed air supply.
DMN-Westinghouse valves have been manufactured with great care.
- do not use coarse tools;
- avoid damage such as scratches, burrs, etc.;
- clean all components thoroughly.
After assembly test run the valve.
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Explosion-proof Diverter valves
Inspection and Maintenance
The interval between overhauls will vary according to the product being handled and
should be based on total operating time. To a large degree the rate of wear for a
particular application will be ascertained by practical experience.
It is recommended that the complete Diverter valve is dismantled for cleaning,
inspection and overhaul as necessary at regular intervals.
The plant operator must ensure that any possible dust
accumulation does not exceed a maximum thickness of 5 mm in
accordance with EN50281-1-2.
5.1
Maintenance every 6 months or after 4,000 operating hours
-
Check the operation of the diverter valve.
Check diverter valve for erosion and corrosion damage.
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