Parker S4AD User manual

Refrigerating Specialties Division 1
Dual Position Solenoid Valve
Type S4AD
Port Size: 20 mm to 100 mm (3/4” – 4”)
For Ammonia, R-22 and
other common Refrigerants
Features
• Prevents the damaging effects of vapor
propelledliquid
• Combineduseasahotgasandsoftgas
valve
• IntegratedS6APilotSolenoids
• Standard Coil Housing Meets NEMA 3R
andNEMA4-RainTight
• Reducesinstalledcosts
• PilotLightAvailable
• ManualOpeningStem
• MaximumRatedPressure(MRP):27.6bar
(400psig)
Description
TheS4ADisbasedonthesamevalvebody,principles,
and length dimension as the standard S4A valves
makingforeasyeldreplacements.Thisheavyduty
solenoid valve is suitable for ammonia, R-22, other
refrigerants,andcertainoilsandotheruidsapproved
foruseinrefrigeration.TheS4ADisapilotoperated,
dual-position,normallyclosedvalve.aItwillcloseon
powerfailure.TheS4ADmaybeopenedbymeansof
themanualopeningstemforservicingorincaseof
electricalpowerfailure.
TheTypeS4ADSolenoidValveisfurnishedwithFPT
InternalNPT(U.S.StandardTaperPipeThread),Socket
Weld,WeldNeckorODS(soldersovercoppertubingof
givendiameter)connections.Thevalvemaybeeasily
removedfrombetweentheangesforservicing.
Itisadvisabletoinstallasstrainerupstreamofeach
valve to prevent entrance of foreign material into
the valve and the rest of the system. Refrigerating
Specialtiesstrainersareavailabletoclose-coupleto
valveinlets.
Purpose
TheS4ADisaspringclosingvalve,suitableforusein
refrigerantliquid,hotgasorsuctionlinesinatem-
peraturerangeof-45°to105°C(-50°to220°F).
311446
I S O 9 0 0 1 - 2 0 0 0 C E R T I F I E D
Fig 1
Bulletin 30-95C
May 2007
Service and Installation

Refrigerating Specialties Division 2
Thedual-positionfeatureoftheS4ADisspecically
designedtohelpaidagainstthedamagingeffectsof
liquidhammerandsuddenliquiddeceleration.This
valveistypicallyappliedasacombinationhotgasvalve
andsoftgasvalveorasaliquidsolenoid.
Principles of Operation
TheTypeS4ADisa pilotoperateddual-positionso-
lenoid.Thevalveincludestwosolenoidassemblies.
Whenbothsolenoidscoilsareenergizedthemainvalve
is100%open.Withsolenoidcoil#2isenergized,the
valve is open approximately 10% of its' full stroke.
Whensolenoidcoil#1isenergized,thevalvewillthen
befullyopen.Ifbothsolenoidcoilsarede-energized,
themainvalveisclosed.
Propersequencing(energizingandde-energizing)of
thesolenoidcoilsisessentialforproperoperationof
thevalve.
From the closed position
Toopenthevalvetotherststageenergizesolenoid
coil#2 and leavesolenoidcoil#1 de-energized.
Thisforcesthesecondarypistondownfullyandthe
primarypistondownpartially,openingthevalveto
therststageposition.Thisisapproximately10%
ofvalve'stotalcapacity.Thevalvewillstayinthis
positionaslongascoil#2staysenergized.
From the first stage position
Toopenthevalvecompletely,keepsolenoidcoil#2
energizedandenergizesolenoidcoil#1.Thisforces
theprimarypistondownwhichinturnforcesthe
mainvalveplugtothefullopenposition.Note,in
orderforthevalvetoopencompletelycoil#2must
beenergizedpriortoorsimultaneouslytocoil#1,
andbothsolenoidsmustremainenergizedtohold
thevalvefullyopen.
From the wide open position
Topartiallyclosethevalve,de-energizesolenoid
coil#1whilekeepingsolenoidcoil#2energized.
Thisallowsthespringtopushthemainplugand
primary piston back against the bottom of the
secondarypistonattherststageposition.Again,
thevalvewillstayinthispositionaslongascoil
#2remainsenergized.
To completely close the valve
De-energizebothcoils.Thisallowsthetrapped
pilotgastobleedoffaroundthesecondarypiston
andthroughanoriceintheprimarypistontothe
downstreamsideofthevalve.Oncethetrapped
gasisallowedtobleedoff,thereturnspringforces
thevalveclosed.
Forexisting120&240voltinstallationsRefrigerat-
ingSpecialtiesoffersanadjustabletimedelayrelay
(108723) which can be used to control the solenoid
sequencing.
Manual Opening Stem
ThemanualopeningstemontheTypeS4ADisforthe
purposeofopeningthevalvewithoutenergizingthe
solenoidcoil.Foraccesstothestemthesealcapon
thebottomofthevalvemustberemoved.Thismustbe
donewithcautionasrefrigerantmayhavebeentrapped
insidethesealcap.Toopenthevalvemanually,turn
thestemcounterclockwiseasfarasitgoes.Toreset
forautomaticoperationturnthestemclockwiseuntil
onlytheatsontheendofthestemprotrudefromthe
packingnut.
Installation
Protectinsideofvalvefromdirt,chipsandmoisture
duringinstallation.Mountonlyinthehorizontalpipe
linewithsolenoidcoilatthetop;thisvalvewillwork
properlyonlyinthisposition.InaliquidlinetheSole-
noidValveshouldbeneartheexpansionvalveinlet.Itis
advisabletoinstalltheS4ADclosecoupledcompanion
straineraheadofthevalveforprotectionagainstdirt
andchips.
TheS4ADsolenoidvalvemustbeinstalledwiththear-
rowonthevalvebodyinthedirectionofowthrough
thevalve.Ifthevalveisbackwards,theowwillnot
bestoppedwhenthevalveiselectricallyde-energized.
LikeallSolenoidValves,theS4ADcanstopowonlyin
thedirectionfromthenormalinlettonormaloutlet(as
shownbythearrowonthebody).Ifreversalofpressure
occursinthesystemsotheoutletpressureexceeds
theinletpressurethepistonwillbeblownawayfrom
itsseatandreverseowwilloccur.Ifasystemhasthis
typeofpressurereversal(asencounteredduringhot
gasdefrostwithliquidrecirculationsystems),acheck
valvesuchasRefrigeratingSpecialtiesDivisionType
CK4Ainserieswiththesolenoidvalvewillpreventow
reversal.(CK4Amustbeinstalleddownstreamtoavoid
trappingliquid.)
Electrical
TheRefrigeratingSpecialtiesDivisionmoldedwater
resistantsolenoidcoilisdesignedforlonglifeandpow-
erfulopeningforce.Thestandardcoilhousingmeets
NEMA3Rand4requirements.Thissealedconstruc-
tioncanwithstanddirectcontactwithmoistureand
ice.Thecoilhousingfarexceedstherequirementsof
NEMAstandardICS,1-110.57saltspraytestforrust
resistance.

Refrigerating Specialties Division 3
Bydenition,Class“F”coilconstructionwillpermit
coiltemperatures,asmeasuredbyresistancemethod,
ashighas130°C(226°F).Finalcoiltemperaturesare
a function of both uid and ambient temperatures.
Thehigheruidtemperaturesrequirelowerambient
temperaturessothemaximumcoiltemperatureisnot
exceeded.Conversely,lowuidtemperaturespermit
higherambienttemperatures.
ThemoldedClass“F”coilisavailablefromstockwith
moststandardvoltages.However,coilsareavailable
forothervoltagesandfrequencies,aswellasfordirect
current.Coilsarealsoavailableastransformertype
witha6voltsecondarywindingforusewiththeRefrig-
eratingSpecialtiesDivisionPilotLightAssembly(see
currentcopyofBulletin60-10,“PilotLightAssembly
andSolenoidTransformerCoil”).
Thesolenoidcoilmustbeconnectedtoelectricallines
withvoltsandHertzsameasstampedoncoil.Thesupply
circuitsmustbeproperlysizedtogiveadequatevoltage
atthecoilleadsevenwhenotherelectricalequipment
isoperating.Thecoilisdesignedtooperatewithline
voltagefrom85%to110%ofratedcoilvoltage.Operat-
ingwithalinevoltageaboveorbelowtheselimitsmay
resultincoilburnout.Also,operatingwithlinevoltage
below the limit willdenitely resultin loweringthe
valveopeningpressuredifferential.
Service Pointers
TheS4ADSolenoidValveandStrainerareeasilyre-
movable for cleaning or repairing. To remove valve
andstrainer,rstmanuallyopenthevalveandpump
outtherefrigerantinthesectionofthelinesealedoff.
Thenunscrewtheangeboltsandspreadtheanges
slightlyapart.
1. Failure to Open: (a) Coils are of incorrectly high
voltage. See “Electrical.“ Check voltage printed
onthecoil.(b)Linevoltageisabnormallylow.See
“Electrical.”Checklinevoltageatcoilleadswitha
voltmeter.(c)Failuretoelectricallyenergize.Check
controlcircuit.(d)Pressuredifferenceacrossvalve
istoohigh.TheS4ADwillopenagainstamaximum
pressuredifferenceacrossthevalveof21bar(300
psig).(e)SolenoidCoilisburnedout.See“Electri-
cal,” and replace with proper coil. (f) Plunger /
NeedleAssemblyissticking.Todisassemblethe
S4ADforinspectionofinternalparts(afterpump-
ingoutthesystemasrequired):disconnectpower
source to the Solenoid Coils, remove the Tube
Assemblies, lift out the Plunger Assembly, then
removetheAdapterAssembly.Removeeverytrace
ofdirtfromthepistonandcylinderusingneem-
eryclothtoremoveburrsifnecessary.Thoroughly
cleanallpartsandreassembleusingalightlmof
refrigerantoilonthepiston.
2. Failure to Close: (a) Electrical control circuit is
notopeningproperly.Checkwiringandcontrols.
(b)TherearechipsordirtonthePilotSeatorthe
TopandMainValveSeats,preventingproperseat-
ing. Disassemble and clean Valve as outlined in
(1])above.(c)MainValveSeat,PilotSeat,orvalve
Needle may be worn or damaged and therefore
leaking.DisassembleandcleanValveasoutlinedin
(1f)above.Ifanyofthesepartsneedreplacing,itis
advisabletoreplaceusingtheproperreplacement
kit.(d)Oneorbothofthepistonsaresticking.See
(1f)above.(e)ManualOpeningStemisturnedall
or partly out holding Modulating Plug Assembly
open and permitting ow through the valve. (f)
CoilhousingScrew(madeofnon-magneticstain-
lesssteel)hasbeenreplacedwithascrewmade
ofmagnetic material andresidualmagnetismis
holdingthePlungerNeedleAssemblyintheopen
position.Consequently,theMainValveisnotclos-
ing.Replacewithscrewofcorrectmaterial.
3. LeakageThroughValve:See(2)above.
4. Overheating:The SolenoidCoilsare designed to
operatehotandareconstructedofhightempera-
ture materials accordingly. Unless troubled with
actualcoilburnouts,highcoiltemperatureshould
beignored.Persistentburnoutsindicateimproper
lineorcoilvoltage.See(1e)above.

Refrigerating Specialties Division 4
S4AD
Fig 2

Refrigerating Specialties Division 5
20mm 25mm 32mm 40mm 50mm 65mm 75mm 100mm 20mm 25mm 32mm 40mm 50mm 65mm 75mm 100mm
Item No. Description Qty. 3/4” 1” 1-1/4” 1-5/8” 2” 2-1/2” 3” 4” Item No. Description Qty. 3/4” 1” 1-1/4” 1-5/8” 2” 2-1/2” 3” 4”
31 Plunger/Needle Asm. 1 10 Gasket, Adapter 1
32 Seat Asm. 1 11 Piston, Top 1
33 Gasket 1 12 Spacer, Piston 3
Plunger/Seat Kit 201630 201630 201630 201630 201630 201630 201630 201630 13 Set Screw, Piston 1
32 Plunger/Needle Asm. 1 14 Nut, Piston 1
33 Gasket 1 Piston Kit 1 208355 208355 208356 208357 208357 208358 208359 208360
Plunger Kit, Needle 201019 201019 201019 201019 201019 201019 201019 201019 6 Gasket, Cover 1
17 Piston 1 8 Bolt, Adapter 6
16 Gasket 1 10 Gasket, Adapter 1
Piston Kit 200760 200760 200767 200389 200389 200391 200393 200227 11 Piston, Top 1
Plug/Stem Asm. 1 12 Spacer, Piston 3
24 Nut, Packing 1 13 Set Screw, Piston 1
22 Washer, Flat 1 14 Nut, Piston 1
23 Packing, Stem 1 15 Bore Plate 1
Plug Kit, Main Valve 202037 202038 202039 202024 202025 202026 202027 202028 16 Gasket, Body 1
27 O-Ring 1 20 Bolt, Body 8
18 Spring, Comp 1 Piston/Bore Plate Kit 1 208415 208415 208416 208417 208417 208418 208419 208420
21 Wiper, Dirt 1 3 O-ring 4
31 Washer, Flat 1 4 Bolt, Cover 8
Spring Kit, Closing 202298 202298 202299 202302 202302 202303 202304 202305 5 Cover 1
22 Washer, Flat 1 6 Gasket, Cover 1
24 Nut, Packing 1 8 Bolt, Adapter 8
23 Packing, Stem 1 9 Adapter 1
Packing Kit, Stem 202100 202100 202100 202100 202100 202100 202101 202101 10 Gasket, Adapter 1
26 Seal Cap 1 21 Orice 2
25 Gasket 1 Adapter/Cover Kit 1 208397 208397 208398 208399 208399 208400 208401 208402
Cap Kit, Seal 202110 202110 202110 202110 202110 202110 202111 202111 2 Bolt 4
7,18 3 O-ring 2
21-24,31 Plug Kit, Main Valve 1 Bolt/O-ring Kit 1 201574 201574 201574 201574 201574 201574 201574 201574
19 Cover, Bottom 1 Gasket/O-ring Kit 1 208379 208379 208380 208381 208381 208382 208383 208384
27 Gasket 1
25,26 Cap Kit, Seal 1
Bottom Asm. Kit 202018 202019 202020 202013 202014 202015 202016 202017

Refrigerating Specialties Division 6
PORT SIZE A B C D E F G H J K
mm in. mm in. mm in. mm in. mm in. mm in. Conn. mm in. mm in. mm in. Conn. mm in. mm in.
20-25 3/4"&1" 39.9 15.7 14.7 5.8 15.7 6.2 24.6 9.7 17.0 6.7
3/4" 25.4 10.0
21.6 8.5 1.3 0.5
1-1/8" 28.7 11.3
15.0 5.91" 26.2 10.3 1-3/8" 28.4 11.2
1-1/4" 26.2 10.3 1-5/8" 30.0 11.8
32 1-1/4" 42.2 16.6 16.0 6.3 20.3 8.0 26.2 10.3 21.1 8.3
1-1/4" 30.0 11.8
25.7 10.1 1.5 0.6
1-3/8" 32.5 12.8
17.8 7.0
1-1/2" 30.5 12.0
1-5/8" 33.8 13.3
2-1/8" 37.1 14.6
40-50 1-5/8"&2" 48.3 19.0 17.5 6.9 25.1 9.9 30.2 11.9 23.4 9.2
1-1/2" 36.3 14.3
30.7 12.1 1.5 0.6
1-5/8" 41.4 16.3
25.1 9.9
2" 37.1 14.6
2-1/8" 40.4 15.9
2-5/8" 42.9 16.9
65 2-1/2" 50.8 20.0 18.0 7.1 25.1 9.9 32.8 12.9 24.6 9.7 2-1/2" 40.1 15.8 33.0 13.0 2.5 1.0
2-5/8" 43.2 17.0
31.5 12.4
3-1/8" 46.7 18.4
75 3" 61.7 24.3 27.2 10.7 31.0 12.2 34.8 13.7 27.9 11.0 3" 47.8 18.8 38.9 15.3 2.8 1.1
3-1/8" 49.5 19.5
31.5 12.4
3-5/8" 54.1 21.3
100 4" 69.9 27.5 29.2 11.5 35.8 14.1 40.9 16.1 31.5 12.4 4" 57.2 22.5 45.0 17.7 3.3 1.3 4-1/8" 61.2 24.1 36.3 14.3
S4AD
Fig 3

Refrigerating Specialties Division 7
R/S Defrost Controller Wiring Diagram
CK-2D/CK-6D Line Equilization, S4AD Soft Start
R/S Adjustable Time Delay Wiring Diagram
Note:The above wiring diagram is to be used only for a R/S defrost controller. If
other manufacturer's controller is used, please consult their electrical diagram

8
ParkerHanninCorporation•Refrigerating Specialties Division
2445South25thAvenue•Broadview,IL60155-3891
Telephone(708)681-6300•Fax(708)681-6306
Warranty
All Refrigerating Specialties Products are warranted
against defect in workmanship and materials for a
periodofoneyearfromdateofshipmentfromfactory.
Thiswarrantyisinforceonlywhenproductsareproperly
installed,eldassembled,maintainedandoperatedin
useandserviceasspecicallystatedinRefrigerating
SpecialtiesCatalogsorBulletinsfornormalrefrigera-
tionapplications,unlessotherwiseapprovedinwriting
byRefrigeratingSpecialtiesDivision.Defectiveproducts
orpartsthereof,returnedtothefactorywithtransporta-
tionchargesprepaidandfoundtobedefectivebyfactory
inspectionwillbereplacedorrepairedatRefrigerating
Specialtiesoption,freeofcharge,F.O.B.factory.War-
rantydoesnotcoverproductswhichhavebeenaltered
orrepairedintheeld,damagedintransit,orhavesuf-
feredaccidents,misuse,orabuse.Productsdisabledby
dirtorotherforeignsubstanceswillnotbeconsidered
defective.
THE EXPRESS WARRANTY SET FORTH ABOVE CON-
STITUTESTHEONLYWARRANTYAPPLICABLETORE-
FRIGERATINGSPECIALTIESPRODUCTS,ANDISINLIEU
OFALL OTHERWARRANTIES.EXPRESS OR IMPLIED,
WRITTEN OR ORAL, INCLUDING ANY WARRANTY OF
MERCHANTABLITLY,ORFITNESSFORAPARTICULAR
PURPOSE.Noemployee,agent,dealerorotherperson
is authorized to give warranties on behalf of Refrig-
erating Specialties, nor to assume, for Refrigerating
Specialties,anyotherliabilityinconnectionwithanyof
itsproducts.
Safe Operation(seealsoBulletinRSBCV)
Peopledoinganyworkonarefrigeratingsystemmust
bequaliedandcompletelyfamiliarwiththesystemand
theRefrigeratingSpecialtiesDivisionvalvesinvolved,or
allotherprecautionswillbemeaningless.Thisincludes
readingandunderstandingpertinentRefrigeratingSpe-
cialtiesDivision ProductBulletinsand SafetyBulletin
RSBpriortoinstallationorservicingwork.
Wherecoldrefrigerantliquidlinesareused,itisneces-
sarythatcertainprecautionsbetakentoavoiddamage
whichcouldresultfromliquidexpansion.Temperature
increase in a piping section full of solid liquid will
causehighpressureduetotheexpandingliquidwhich
canpossiblyruptureagasket,pipeorvalve.All hand
valvesisolatingsuchsectionsshouldbemarked,warn-
ingagainstaccidentalclosing,andmustnotbeclosed
until the liquid is removed. Check valves must never
beinstalledupstreamofsolenoidvalves,orregulators
withelectricshut-off,norshouldhandvalvesupstream
of solenoid valves or downstream of check valves be
closeduntiltheliquidhasbeenremoved.Itisadvisable
toproperlyinstallreliefdevicesinanysectionwhere
liquidexpansioncouldtakeplace.
Avoidallpipingorcontrolarrangementswhichmight
producethermalorpressureshock.
Fortheprotectionofpeopleandproducts,allrefriger-
antmustberemovedfromthesectiontobeworked
onbeforeavalve,strainer,orotherdeviceisopened
orremoved.
Flanges with ODS connections are not suitable for
ammoniaservice.