Samson 1634666 Manuel utilisateur
DOC4000G
INSTRUCTION MANUAL FOR SAMSON VACUUM LIMITER
VACUUM LIMITER
INSTRUCTION MANUAL
Accessories
• Technical data
• Functional description
• Installation
• Adjustment
ATEX APPLICABLE
2
CONTENTS
1 Introduction .............................................................................................................................. 4
1.1 Declaration of incorporation.................................................................................................... 4
1.2 Explanation of warning symbols.............................................................................................. 5
1.3 Functional description............................................................................................................. 5
2 Technical data.......................................................................................................................... 6
2.1 Materials ................................................................................................................................. 6
2.2 Sectional drawing.................................................................................................................... 6
2.3 Dimensions............................................................................................................................. 7
3 Installation & adjustment ................................................................................................... 8
3.1 Installation.............................................................................................................................. 8
3.2 Adjustment ............................................................................................................................. 8
Vacuum limiter 3
E-Mail
Web www.samson-pumps.com Phone | +45 87 50 95 70 DK-8800 Viborg
DOC4002F
Declarationofincorporation
AnnexIIB
SamsonPumpsA/S
Petersmindevej21
DK-8800Viborg
Herebydeclaresthatthefollowingproduct:
Vacuumlimiter,itemNo.:1634666
Conformstothefollowingdirective:
MachineryDirective2006/42/EC
Iherebydeclare,thattheVacuumlimiterareinconformitywiththefollowingharmonizedstandard:
DS/ENISO12100:2011Safetyofmachinery-Generalprinciplesfordesign-Riskassessmentandrisk
reduction
ThevacuumlimiterishazardanalyzedaccordingtotheATEXDirective2014/34/EUwiththefollowingresult:
· TheVacuumlimiterdonothaveapotentialignitionsource.
· TheATEXDirective2014/34/EUdoesnotapplytothisproduct.
· TheproductmaybeusedwithintheExarea.
Appliedharmonizedstandards,inparticular.
DS/EN1127-1:2011 Explosiveatmospheres-Explosionpreventionandprotection-part1:Basic
conceptsandmethodology
DS/ENISO80079-36:2016 Explosiveatmospheres-Part36:Non-electricalequipmentforexplosive
atmospheres-Basicmethodandrequirements
Thestandardsareusedtotheextentitisrelevanttotheproduct.
Theproductmustnotbeusedbeforethecompletesystem,whichitmustbeincorporatedin,hasbeen
conformityassessedandfoundtocomplywithallrelevanthealthandsafetyrequirementsof2006/42/ECand
otherrelevantdirectives.Theproductmustbeincludedintheoverallriskassessment.
Viborg,21.05.2019________________________________________
JanS.Christiansen–Manager,Technicaldept.
1 INTRODUCTION
1.1 Declaration of incorporation
DOC4002F
4
To be used with all safety instructions that must be followed. A failure to follow the
instructions may result in injury and/or incorrect machine operation.
1.2 Explanation of warning symbols
Pilot pressure
Air inlet
Air inlet
Adjustment
Air outlet
The SAMSON Vacuum Limiter Valve is designed to control the pressure (vacuum) level and to avoid
cavitation in the pump.
The Vacuum Limiter Valve is installed when the suction line may force the pump to operate below the
cavitation limit. Air must then be supplied to the suction side of the pump through the vacuum limiter,
which is regulated according to the required pressure.
Cavitation arises when the pressure in the pump falls to under the steam pressure for the service liquid,
which makes the liquid boiling and steam bubbles arise in the service liquid. Continuous operation will
cause great mechanical damage.
1.3 Functional description
Air outlet DOC1634089_4
The SAMSON vacuum limiter is exclusively designed for SAMSON liquid ring pumps!
Important technical and safety instructions is showed by symbols. If instructions are not performed
correctly, it may lead to personnel injury or incorrect function of the vacuum limiter.
(Vacuum)
Vacuum limiter 5
A-A
A
A
6 121 5 7 2 4 11313 14
15 109 8
17
16
17
16
POS DESCRIPTION MATERIAL
1 Membrane VITON antistatic
2 Membrane housing, upper PEHD antistatic
3 Spindle AISI 316
4 Driving plate AISI 304
5 Membrane housing, lower PEHD antistatic
6 Spring guide POM
7 M6x25 allen screw DIN 912 A4
8 M6 nut DIN 934 A4
9 M6 washer A4
10 M6 set screw DIN 916 A4
11 O-ring Ø8x2 NBR Shore 70
12 Spring A2
13 O-ring Ø30x3 NBR Shore 70
14 Indicator disc 2-Plex
15 Nipple hose Ø6-1/8” BSP AISI 316
16 Hose strap AISI 304
17 Hose EPDM
2.1 Materials
DOC1634666
DOC1627186
2.2 Sectional drawing
2 TECHNICAL DATA
6
45
136
30
15
1" BSP
80.0
80.5
Nipple hose 6 1/8" BSPT
DOC1634666_1
2.3 Dimensions
DOC1634666_1
Weight [kg] 0.5
Vacuum limiter 7
M6 set screw
Note:
Capacity curve
• Install the vacuum limiter on the suction line by using the 1” BSP thread.
• Connect the hose to the suction line by using the 1/8” BSP nipple hose and the two straps, which are
included in the kit.
• If you have an exsisting installation, you are able to use M6 nipple hose on your suction line.
Step 1) When the pump is running, close the valve by turning the M6 set
screw counter clockwise (-direction)
Step 2) Open the valve by turning the set srew clockwise (+direction), until
the required set pressure is reached.
It is recommended to adjust the valve to the lowest set pressure as possible to avoid cavitation in the pump
and unacceptable noise from the air inlet.
3.1 Installation
3 INSTALLATION & ADJUSTMENT
3.2 Adjustment
DOC1634666_2
DOC1627080DOC1627077
A failure to comply the adjustment described below, may result in damage to the
vacuum limiter.
• The vacuum limiter may not be installed if it is damaged.
• Repair of vacuum limiter used in Ex zones is not allowed.
8
Notes:
Vacuum limiter 9
Notes:
10
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