SeaLand VHT4501 User manual

1
VF149
• Verylowwaterconsumption–aslittle
as1pint/.5literperush
• Integratedvacuumpumpand
holdingtank
• “Full”tankshut-downrelay
• PedalLockkeepsushballopen
duringholdingtankpump-out
• Adult-sizeseat
VACUFLUSH SYSTEM FEATURES
Water
Supply
Waterhose
connection
Threadsize 1/2inch(13mm)NPT
Flowrateattoilet 2gpm/7.6lpm
Discharge Piping
HoseID Standard 1.5inch/38mm
Hoseruns Max.horizontalrun 20ft./6.1m*
Max.verticalrun 3ft./0.9m*
Electrical System
(12 VDC)
Vacuumpump 3-ampdraw 5-ampfuse/breaker**
Dischargepump 6-ampdraw 10-ampfuse/breaker**
*Distancebetweentoiletdischargeandvacuumholdingtankinlet.
**Vacuumpumpanddischargepump(ifapplicable)shouldbeonseparatecircuits.
SYSTEM SPECIFICATIONS
This manual must be read and understood
before adjustment, maintenance, or service is
performed. Modication of this product can
result in property damage. See page 3.
WARNING
IMPORTANT NOTICE
VacuFlush®sanitationsystemsmust
beinstalledaccordingtoDometic’s
recommended procedures.
Do not attempt installation with-
out rst contacting a VacuFlush
certified dealer or Dometic
Corporation.
VHT4501
SeaLand®
VACUUM TOILET/HOLDING TANK SYSTEM
OWNER’S MANUAL
140 Series VacuFlush®Toilet and
4500 Series Vacuum Holding Tank

2
PRODUCT SPECIFICATIONS
DIMENSIONS
140 Series Toilets VHT4500 Systems
Toilet dimensions may vary ± 3/8-inch
(10mm).
Model Description Weight –
Empty/Full Voltage
VHT4501
Vacuumholdingtank.Indicator
panel.9-gallon(34-liter)capacity.
Straighttting(vertical)discharge.
30lbs.(14Kg)/
102lbs.(46Kg) 12VDC
VHT4502
Vacuumholdingtank.Indicator
panel.9-gallon(34-liter)capacity.
Elbowtting(horizontal)discharge.
30lbs.(14Kg)/
102lbs.(46Kg) 12VDC
VHT4511
Vacuumholdingtankwithdischarge
pump.Indicatorpanel.9-gallon
(34-liter)capacity.Swiveltting
discharge.
38lbs.(17Kg)/
110lbs.(50Kg) 12VDC
Model Description Seat
Height Weight Color (ceramic)
147 Above-oor,rightsidedischarge
vacuumtoiletwithpedallock.
13-1/2in.
(343mm)
25lbs.
(11.3Kg)
White
Bone
148 Above-oor,reardischarge
vacuumtoiletwithpedallock.
13-1/2in.
(343mm)
25lbs.
(11.3Kg)
White
Bone
149 Above-oor,leftsidedischarge
vacuumtoiletwithpedallock.
13-1/2in.
(343mm)
25lbs.
(11.3Kg)
White
Bone
Weightsmayvary±2-3%.Specicationssubjecttochangewithoutnotice.
140 SERIES TOILETS
VHT4500 MODELS

3
SystemFeatures......................................... 1
SystemSpecications................................ 1
ProductSpecications,Dimensions............ 2
Warnings.................................................... 3
ToiletSystemComponents.......................... 4
Installation..............................................5-8
BeforeOperation......................................... 9
SystemStart-Up.......................................... 9
ToiletOperation........................................... 9
HoldingTankPump-out............................. 10
WARNINGS
SeaLandvacuumtoiletsystemsmustbeinstalled
according to Dometic’s recommended proce-
dures.Dometicalsorecommendsthataqualied
marinetechnicianorelectricianinstallorservice
thisproduct.Equipmentdamage,injurytoperson-
nelordeathcouldresultfromimproperinstalla-
tion. DOMETIC SANITATION CORPORATION
ACCEPTSNORESPONSIBILITYORLIABILITY
FORDAMAGETOEQUIPMENT,ORINJURYOR
DEATHTOPERSONNELTHATMAYRESULT
FROM IMPROPER INSTALLATION, SERVICE
OROPERATIONOFTHISPRODUCT.
WARNING!
HAZARD OF FLOODING–Ifthetoilet
system is connected toANY through-the-hull
ttings,properlyinstalledseacocksMUSTbein-
stalledinallpipingconnectedtothrough-the-hull
ttings.SeacocksMUSTbeeasilyaccessibleto
allusersofthetoiletsystemorsecondaryvalves
ttedinhoseswheretheyareeasilyaccessible.
ALWAYScloseseacockswhen toiletsystemis
notinuse(evenifboatisunattendedforabrief
period.AllvalvesMUSTbefullborevalvesand
marine quality. Screw-to-close gate valves are
notrecommended.Failuretocomplycanresult
in ooding which can cause loss of property
andlife.
WARNING!
HAZARD OF FLOODING – If toilet is
connectedtoANYthrough-the-hullttings,ALL
exiblehosesmustbeofmarinesanitationqual-
ityandmustbesecuredtoANYttings(suchas
thoseatseacock,ventedlooportoilet)withtwo
stainlesssteel,worm-drivehosebandclampsat
eachconnection.ConnectionsMUSTbechecked
frequently for integrity. Failure to comply can
resultinoodingwhichcancauselossofproperty
andlife.
WARNING!
HAZARD OF FLOODING–Iftoiletrimis
belowthewaterlineatANYtime(duringanycon-
ditionsofheel,loadortrim)andisconnectedto
ANYthrough-the-hullttings,properlypositioned
ventilated (vented) loops MUST be installed in
intake*ordischargepipingtopreventpotential
backsiphonageofseawaterintotheboat.Failure
todosocanresultinoodingwhichcancause
lossofpropertyandlife.
* if connected to raw water
WARNING!
HAZARD OF FLOODING–Ifthetoilet
usesfresh water for ushingandis connected
directly or indirectly to a shoreside municipal
watersystematANYtime,shoresidewatercon-
nections MUST be disconnected if the boat is
unattended(evenforabriefperiod).Failureto
comply can result in ooding which can cause
lossofpropertyandlife.
WARNING!
HAZARD OF FLOODING–Iftoiletuses
rawwaterforushingatANYtime,arawwater
pump controlled by an automatically operating
demand switch MUST NOT be installed. If the
onboardwatervalveoranyplumbingconnections
wereto leak, the automaticallyoperatedpump
wouldstartandcouldoodtheboat.Failureto
complycancauselossofpropertyandlife.
WARNING!
HAZARD OF FLOODING–Beforebe-
ginninganyworkonthisproduct,besurethatall
electricalpowertotheunithasbeenturnedoff.
Failuretodosocanresultinoodingwhichcan
causelossofpropertyandlife.
WARNING!
HAZARD OF SHOCK OR FIRE –
Alwaysuserecommendedfuse,circuitbreaker
andwiresize.Failuretodosocanresultinre
thatcancausethelossofpropertyandlife.
CAUTION:Overllingtheholdingtank
cancreateseriousdamagetothesanita-
tionsystem,suchasrupturingtheholdingtank
andreleasingtankcontentsintothebilge.Tohelp
preventthispossibility,theVHT4500includesa
“full”tanksafetyshut-downrelaytothevacuum
pump.The“full”signalisgeneratedbyabuilt-in
tanklevelprobe.
TABLE OF CONTENTS
ProperBowlCleaning............................... 10
ClearingDischargeLines.......................... 11
Winterizing................................................. 11
MaintainingtheSystem............................. 11
DeodorantsandSpecialTissue................ 12
MarineSanitationRegulations................... 12
Troubleshooting..................................13-15
ToiletModelIdentication.......................... 15
OrderingParts........................................... 15
CustomerServiceandWarranty............... 16

4
TOILET SYSTEM COMPONENTS
DOCKSIDE
DISCHARGE INDICATOR
PANEL
140 SERIES
VACUUM
TOILET
VHT4500 SERIES
VACUUM HOLDING TANK
OVERBOARD
DISCHARGE
DISCHARGE
PUMP (opt.)
VENT FILTER
VACUUM TOILET
TheVacuFlush140series(EcoVac)offersaspace-savingdesignwith
adult-sizedseat.Allcomewithanattractive,easy-to-useushpedalthat
alsolocksopenduringtankdischarge.
Medium-height 140 series toilets are available in three discharge
models:areardischargeunit,aright-sidedischargeunit,andaleft-side
dischargeunit.
VACUUM HOLDING TANK (VHT)
TheVHT4500producesandstoresvacuumbetweenushes.
The vacuum pump draws only 3 amps of electrical current
at 12 VDC. The VHT contains a pressure differential switch
thatdeactivatesthepumpwhentheproperlevelofvacuumis
generated.
TheVHTsystemisequippedwith“3/4-full”and“full”leveloat
switches.The“full”oatswitchiswiredtoanautomaticshutdown
relaythatprohibitsthevacuumpumpfromgeneratingvacuum
oncethetankisfull.
TANKWATCH STATUS PANEL
Indicates when holding tank is 3/4 full and com-
pletelyfull.Whenred“full”lightison,vacuumpump
shutsdownuntiltheholdingtankispumpedout.
VHT DISCHARGE PUMP (VHT4511)
Diaphragm-style pump for overboard discharge of efflu-
ent. Runs dry without harm. Pumps out in less than three
minutes. On-off switch available separately. Discharge
holding tank only in waters where permitted – check with
localCoastGuard.

5
INSTALLATION
Component Location Checklist
Vacuumtoilet Bathroom
compartment
1. Checkdimensionsofmountingspace.
2. Determinebesttoiletdischargeconnection:right,leftorrear
discharge(aboveooronly).
3. Allowatleast1½-inch(38mm)clearancebetweentoiletrear
andwall.
4. Makesurecompartment,showerandvanitydoorswillclear
toiletbowl.
5. Checklocationnearestcoldwaterline.
6. Waterlinemustbeatleast½-inchIDandprovideaminimum
owof2gallonsperminute(7.6litersperminute).
7. Checkclearancestosidewallforinstallationofushlever
coverandbackwallforbestclearance.
Vacuumholding
tank(VHT)
Anyspacethat
permitsaccess
toremoveentire
unit
1. Thevacuumholdingtankinletmustbelocatednomorethan
20feet(6.1m)fromthetoiletdischarge.
2. TheVHTinletmustnotbelocatedmorethan3feet(0.9m)
abovetheoutletofthetoilet.(NOTE:Thelowerthetank,the
betterthesystemefciency.)
3. TheVHTmustbemountedinahorizontalposition.
4. TheVHTmustnotbeexposedtotemperaturesover120°F
(49°C).Donotplacenearheatsourcessuchasengine
manifolds,waterheaters,generators,etc.Mountingspace
mustprovideforfreeairow.
Vacuumhose
andttings
Followrouting
instructions
1. OdorSafePlusSanitationHoseshouldbeused;itissizedto
useSeaLandttingsinthesystem,minimizingvacuum
leakage.
2. Itisimportantthatrestrictionsinthevacuumhosebekeptto
aminimum.Whereabendmustoccurinahoserun,thera-
diusofthebendmustnotbelessthan8.5inches(216mm).
Ifatighterradiusisrequired,useaSeaLand90°bendkitto
assureaclog-freetransition.
LOCATING THE COMPONENTS
INSTALLING VACUUM TOILET
1. Toiletmustbeinstalledonahorizontalsurface,and
locatedsothatthetoiletseatcanbeliftedandthe
footpedaloperatedwithoutinterferencefromother
xtures.
2. Place toilet in desired location at least 1.5 inches
(38mm)frombackwall.
3. Usescrewsincludedtofastentoilettooor.Cover
screwheadswithcapsprovided.
4. Attach1/2”IDwatersupplypipeorhosefromwater
systemto1/2”NPTconnectiononbackofwatervalve.
5. Connectsanitationhosetotoiletdischargettingbyfollowingsameinstructionsforattaching
hosetovacuumholdingtank(seepage7).

6
INSTALLATION (cont’d)
ROUTING SANITATION HOSE
Maximum length of hose between
toilet and vacuum tank is 20 ft.
(6.1 m).
B.
Maximum difference
in height from toilet to
vacuum tank is 3 ft. (0.9
m).
A.
B
A
Routethesanitationhosefromthetoiletoutlet
totheintendedlocationforthevacuumholding
tankinlet(seetipsforhoseinstallationonpage
7).
Makesurethehoselayoutdoesnotexceedthe
riseandrundistancesshownabove.
HOSE LAYOUTS
YES
YES
YES
NO!

7
TheVacuumHoldingTank(VHT)canbelocated
inanyaccessiblespaceaslongasthe1.5-inch
hoseisnotlongerthan20feet(6.1m)andthe
VHT inlet is not higher than 3 ft. (0.9 m) from
the toilet outlet.The VHT must be mounted
horizontally.
1. PositionVHTinspaceintended.Makesure
there is enough space around top of VHT
tomakeallplumbingandelectricalconnec-
tions.
2. SecuretheVHTwithfour1/4inchx1-1/2inchlonglagscrewsandwashersonalltankmounting
feet.Secureatallfourmountingfeet.
INSTALLATION (cont’d)
VACUUM HOLDING TANK
CONNECTING SANITATION HOSE
1. Toconnect1.5-in.(38mm)IDsanitationhose(not
supplied)fromtoiletoutletttingtotheVHTinlet
tting,placetwo2-inch(51mm)hoseclampson
hoseneareachendthatwillattachtodischarge
andinletttings.Applyliquiddishwashingsoapto
outsideofttingandinsidehose.Twisthoseasit
ispushedontotting.Hoseendshouldbeush
againstthettingshoulderwhenproperlyinstalled.Afterpushinghoseandttingtogether,
tightenbothhoseclampstotightentheconnection.
2. Connect1.5-in.(38mm)IDsanitationhose(s)(notsupplied)totankoutlettting(s)withtwo
2-inchclampsperconnection,thenconnectotherend(s)tootherdischargettings.
3. Connect5/8-in.(16mm)IDventhose(notsupplied)betweenvacuumpumpdischargeand
through-hullventtting.InstallSaniGard™ventlter(availableseparately)inventlinefor
addedprotectionagainstmalodors.
Other than dishwashing liquid, do notuseanyotherlubricants,sealantsoradhesiveswhen
connectingsanitationhosesandttings.Do not restrict the ability to pull the hose or pipe.
EXCELLENT
Avoidbindingcornersandsharpbends.
Donotusewiretiestosecurethehoseorpipe.
Verticalhoserunsshouldbeinstalledasverticalaspossible(no
longrunsatanangle)formaximumvacuumefciency.
YES YES
Trough
support
How To Make Hose Installation Easier

8
INSTALLATION (cont’d)
ELECTRICAL SYSTEM
Electrical installation must
follow ABYC standards and
be performed by qualied
personnel only!
VACUUM PUMP
Vacuumpumpmustbeprotectedbya5-amp
fuse or circuit breaker.Connectwires
accordingtowiringdiagram.
TANK LEVEL PROBES
“3/4FULL”and“FULL”tanklevelprobesare
pre-installedinthevacuumholdingtank.
ConnectwirestotheTankWatchStatusPanel
accordingtothewiringdiagram.
DISCHARGE PUMP (VHT4511)
Dischargepumpmustbeprotectedbya
10-amp fuse or circuit breaker.Fuseorcircuit
breakerfordischargepumpmustbeoncircuit
thatisseparatefromtoiletelectricalcircuit.
Connectwiresaccordingtowiringdiagram.
TANKWATCH STATUS PANEL
1. Selectalocationfortheholdingtankstatus
panel.Makesurethatwiresfromtanklevel
probesandstatuspanelcanbeconnected
withpanelinchosenlocation.
2. Cutanaccessholeinthewallaccordingto
template(below).
3. Connectwiresfrompaneltoprobewires
accordingtowiringdiagram(suppliedsepa-
rately).
4. Fastenpaneltowallwithtwofastenersthat
areprovided.
1-7/8in.(48mm)
1in.(25mm)
2-9/32in.(58mm)
TankWatch Panel Mounting Template
(actualsize)
LIGHT/WIRINGACCESSHOLE
FASTENERLOCATIONS
Wiring Diagram

9
1. Fillfreshwatertankandadddeodoranttoholdingtank
through toilet bowl. (See System Start-Up section,
below.)
2. Makesureallguestsunderstandtheoperationofthe
VacuFlushsystemandtheinstructionlabelisinplain
sightandeasyforgueststoread.If this label is not
visible under the toilet seat lid, please contact
SeaLand Customer Service immediately.
3. Remember, the vacuum pump starts automatically.
Shutoffthesystembeforeservicinganddonotleave
theboatwithtoiletsystembreakeron.
4. Never use drain openers, alcohol, solvents, etc. in
the system.
5. Ifthesystemdoesnotfunctionproperly,refertothe
Troubleshootingsectionofthismanualandrepairas
necessary.Ifproblempersists,contactyourlocalSeaLanddealerorseetheCustomerService
sectionofthismanual.
1. Turnoninletwatersupply.
2. Turnonelectricalpowertosystem.
3. Flushwaterintosystembydepressingushleveruntilwaterstartsowingtothevacuum
pump,approximately15seconds.Thevacuumpumpwillrunforapproximatelythreeminutes
untilsystemreachesoperatingvacuumlevelandthenwillshutoff.
BEFORE OPERATION
SYSTEM START-UP
1. Toaddwatertothetoiletbeforeusing,raiseushlever
untildesiredwaterlevelisreached.Generally,morewater
isneededonlywhenushingsolids.
2. To ush toilet, press ush lever sharply down to the
ooruntilcontentsclearbowl.Asharppoppingnoiseis
normal when the vacuum seal is broken and ushing
actionbegins.Hold lever down for three (3) seconds.
Releasepedal,lettingitsnapbackintooriginalposition.
Ifushleverisaccidentallyreleasedbeforewasteclears
bowl,donotushagainuntilvacuumpumpstopsrunning.
Asmallamountofwaterremainsinbowlafterushing.
3. Donotdisposeofsanitarynapkinsorothernon-dissolv-
ingitemsintoilet,suchasfacialtissueorpapertowels.
Theseitemscancausepluggingofthesystem.Referto
theDeodorantsandSpecialTissuesectioninthismanual
formoreinformation.
Raise pedal
to add water.
Press pedal
to ush.
Do not ush
foreign
objects.
TOILET OPERATION

10
PROPER BOWL CLEANING
Tomaintainthetoilet’soriginal,lustrousappearance,use
SeaLand®ToiletBowlCleanerorothernon-abrasive
bathroomandtoiletbowlcleaners.Followlabeldirections.
Caution
To avoid damaging the toilet system’s seals and
valves, do not clean toilet with abrasive cleaners,
caustic chemicals, or lubricants and cleaners
that contain alcohols or petroleum distillates.
HOLDING TANK PUMP-OUT OPERATION
NOTE: Before pumping out holding tank, turn off
watersupplytotoiletandelectricalpowertovacuum
pump. Follow steps below to assure thorough tank
discharge.
1. a.PressdownfullyonPedal,thenb.pressLock.
2. Slowly bring Pedal up while holding Lock down
againstPedaluntilPedalstops.TheLockprevents
the ush ball inside the toilet bowl from closing
completely.
3. Pumpoutholdingtank.
4. Afterpump-outiscomplete,pressdownonPedal
fully,thenreleasetocloseushball.

11
Maintenance Procedure Service Interval Additional Information
ROUTINE
Checkallclampedhosejointsbelow
waterlineforleaks. Monthly –
Checklterscreeninwatervalve.
Afterrstyearofservice,
thenasneededifwaterow
isnoticeablyslower.
Screenislocatedinsidewater
valveinlet.
Replaceventlter(ifinstalledinholding
tankventline). Annually –
MAJOR SYSTEM MAINTENANCE
Replaceushballsealandushball
(ifrequired). Everythreeyears Seetoiletpartslistfor replacementkitpartnumber.
EXTENDED PERIODS OF NON-USE – CLEARING DISCHARGE LINES
Sanitationhosesshouldbeclearediftoiletwillnotbeneededforanextendedperiodoftime(more
thantwoweeks).
1. Filltoiletbowlwithwaterandadd4oz.(120ml)ofbiodegradablelaundrydetergent(should
NOTcontainbleach).
2. Flushtoilet,holdingpedaldownforabouttwominutes.Closeushball.
3. Turnoffwatersupplytotoilet.
4. Flushthetoiletwithoutwater,allowingthevacuumpumptoshutoffaftertheush.Repeat
threetimes.(Thisprocedurewillminimizeanyremainingwaterinthesanitationhoses.)
5. Turnoffpowertothevacuumpump.
6. Completelypumpoutholdingtank.
Ifsystemwillbesubjectedtofreezingtemperatures,pleasefollowaboveprocedure,thenwinterize
systemasdescribedbelow.
WINTERIZING
Attheendofeachseason,theSeaLandtoiletshouldbe winterizedfor storageby usingpotable
water-safeantifreezeinthesystem.
To use antifreeze:
1. Drainpotablewatertank.
2. Addfreshwaterantifreezetopotablewatertank.
3. Flushpotablewaterantifreezeandwatermixturethroughtoiletandintothewasteholdingtank.
Eachinstallationisdifferent,soamountsmayvary.Userdiscretionisrequired.
4. Emptyholdingtank.
NOTE:Usenontoxicantifreezedesignatedforpotablewatersystems.(Seevehicleowner’smanual.)
CAUTION: Neveruseautomotive-typeantifreezeinfreshwatersystems.
MAINTAINING THE SYSTEM
Thischartisageneralguideforkeepingyoursanitationsystem100%readyforuseatanytime.

12
DEODORANTS AND SPECIAL TISSUE
Your SeaLand toilet system may require the regular addition of a deodorant product to reduce
malodorsandtohelpbreakdownholdingtankcontents.Severalfactorsshouldbeconsideredin
selectingadeodorantproduct.
Liquid or Granulated.  Liquid products work more quickly by readily going into solution.
Granulatedpowderformulationshavetheadvantageofrequiringlessstoragespaceandareless
likelytoleakifthepackageisinadvertentlydamaged.
Formaldehyde versus Non-Formaldehyde.  Dometic manufactures both types of deodorants.
Generallyspeaking,formaldehydeformulascontrolodorveryeffectivelyatalltemperaturesandwith
alldegreesofwaterhardness.BothSeaLand®NATURALandClean‘nGreen™brands,whichare
formaldehyde-free,aresimilarlyeffective.
How Much Deodorant and How to Add It.Thedeodorantisaddeddirectlyintothetoiletbowl,then
ushedintotheholdingtank.Followbottleorpackageinstructions.Conditionsofextremelywarm
weather,longerwasteholdingtimeandlargertankcapacitiesmayrequiremoredeodoranttreat-
ment.Also,tomaintainoptimumefciencyinodorcontrol,thewasteholdingtankshouldbecleaned
thoroughlyatleastonceormoreeachseasondependingonuse.
Why Not Use Household Toilet Paper in Your Toilet.Householdtissuesoftencontainadhesives
whichbondtogetherthepaperbersfromwhichthetissueismade.Theadhesivespreventthetissue
frombreakingapart,andtheirusein“ultra-lowow”systemscancausesystemclogging.SeaLand
tissueisespeciallydesignedforuseinlowwatertoiletsystems.Itsrapiddissolvingpropertiesminimize
theamountofresidualpaperintheholdingtankandallowdeodorizerstoworkmoreefciently.
SeaLand Brand versus Other Brands.Weconstantlystrivetoprovideoursystemownerswith
effective products that have minimal environmental impact and good value.  Many deodorant
productsdonotmeasureuptoourstandardsofperformanceandvalue.
SeaLand®
Cleaner
16-oz.bottle
Part No.
379314016
SeaLand®
NATURAL
Liquid Deodorant
32-oz.bottle
Part No.
379114032
SeaLand®
Rapid-Dissolving
Toilet Tissue
Four400-sheetrolls
Part No. 379441204
SeaLand®
Clean ‘n Green
Bowl Cleaner/Tank Deodorant
12-2oz.drop-inpouches
Part No. 379512602
AllboatswithxedtoiletsinU.S.watersandinthewatersofsomeothercountriesarerequiredto
haveanoperablemarinesanitationdevice(MSD).TheVacuFlushvacuumsanitationsystem,when
installedinaboat,isaholdingtankorTypeIIIsystemasdenedbytheU.S.CoastGuard.TypeIII
systemspermitoperationofthetoiletwithoutdirectdischargeofuntreatedwasteaftereveryush.
TypeIIIsystemscanbedischargedatmarinadocksidepump-outstationsor,ifincoastalwaters,
aminimumofthreemilesoffshore.Overboard discharge capability must remain secured while
within the three-mile limit. Theoverboarddischargepumpisactivatedbyakeyedswitchinthe
toiletcompartment.This key should be removed at all times except when discharge pump is
operating.
Sewagefromanysourceshouldnotbedischargeddirectlyintoourwaters.Ifyouareinterestedin
learningmoreaboutthisissue,pleasevisitourwebsiteatwww.DometicSanitation.com.
MARINE SANITATION REGULATIONS

13
Problem Possible Cause Service Instructions
1.Waterwillnotstayinbowl.

2.Plasticushballwillnotclose
completely.
3.Flushballwillnotopen.
4.Waterdoesnotshutoffin
toilet(toiletoverows).
5.Waterdoesnotentertoilet
bowlproperly.
6.Waterleakingfromwater
valve.
a.Looseclampring.
b.Impropersealaroundushball
duetodirtordebrisonunderside
ofballseal.
c.Wornordamagedseal.
d.Wornordamagedushball.
a.Toomuchfrictionbetweenush
ballandballseal.
b.Watervalvescrewsaretootight.
c.Defectivespringcartridge.
a.Brokenshaft.
b.Shaftnotfullyengagedinthe
springcartridge.


a.Dirtlodgedinwatervalveseal.
a.Insufcientwaterowrateattoilet.
b.Watervalveclogged.
c.Pluggedrimwashholesintoilet.
a.Watervalvebodycrackeddueto
freezedamage.
b.Waterlineconnectionislooseor
notseatedproperly.
c.Defectivewatervalve.
d.Strippedthreads.
a.Tightenclampringadjustingnut.
b.Inspectushballandunderside
ofsealforforeignobjects.
Cleanushballandunderseal
ifneeded.
c.Replaceseal.
d.Replaceushball.
a.Lubricatebetweenushballand
ballsealwithfurniturepolishor
cookingspray.
b.Loosenscrewsslightly.
c.Checkspringtensionby
pushingushleverdown,then
releaseitsuddenly.Ifleverdoes
notsnapbackintooriginalposi-
tion,replacespringcartridge.
a.Replaceshaft.
b.Putpressureonshaftfrom
undertheushball(pushing
intospringcartridge)untilit
engages.Youmayhaveto
rotateushballslightlyuntil
shaftlinesupwithsquarein
springcartridge.
a.Disassembleandcleanwater
valve.
a.Checkwaterowrateattoilet.
Rateshouldbe2gpm(7.6lpm)
attoilet.
b.Removeandcleanscreen
locatedatinletofwatervalve.
c.Cleanholes.Ifstillaproblem,
replacethetoiletbowl.
a.Replacewatervalve.
b.Insurethatthreadsarenot
cross-threadedandtighten.
c.Replacewatervalve.
d.Replacewatervalve.
TROUBLESHOOTING

14
Problem Possible Cause Service Instructions
TROUBLESHOOTING (cont’d)
7.Waterleakingfromrearof
toiletbowl.
8.Waterisleakingfromthe
base/toiletconnection.
9.Vacuumpumprunningtoo
muchbetweenushes.
10.Toiletwillnotush.
 (Novacuum.)
11.Vacuumpumpwillnotrun.
12.Vacuumpumpwillnot
shutoff.
a.Wornordefectivevacuumbreaker.
b.Loosevacuumbreaker.
c.Crackedordefectivetoiletbowl.
a.Clampringmaybeloose.
b.Ballsealsmaybewornor
defective.
a.Flushballintoiletleaks.
b.Vacuumlineleak.
c.Foreignmaterialhasfouledair
pumpvalves.
d.Pumpdiaphragmwornor
damaged.
e.Duckbillvalveindischargetting
stuckopen.
a.Vacuumpumpwillnotrun.
b.Pluggedvacuumdischargeline.
c.Pluggedvacuumpumpvalve.
d.Vacuumpumpdischargeor
 intakelinesplugged.
a.Nopower.
b.Looseorbrokenelectrical
wiring.
c.Improperelectrical
connections.
d.Faultyvacuumswitch.
e.Faultymotor.
a.Insufcientvacuum.
b.Excessivevacuumleak.
c.Faultyvacuumswitch.
d.Improperwiring.
a.Removevacuumbreakercover
andlookintotopofvacuum
breaker.Flushtoilet.Ifwater
leaksduringush,vacuum
breakerneedstobereplaced.
b.Securevacuumbreaker
connection.
c.Replacetoiletbowl.
a.Tightentheclampring.
b.Replaceballseals.
a.Leavesmallamountofwaterin
toilet.Ifwaterdrainsfrombowl,
seeproblems1-2.
b.Tightenallhoseconnections
atpump,vacuumtank,holding
tank,andtoilet.
c.Disassembleairpumpand
inspectunderthetwoatdisk
valves.Ifforeignmaterialis
present,removeitandreas-
semblepump.
d.Inspectdiaphragminpumpfor
smallholeorrip.Replaceif
necessary.
e.Disassembledischargeoutlet
andinspectduckbillvalve.
Cleanorrepairifnecessary.
a.Seeproblem11.
b.Blockageusuallyatbaseoftoi-
letbelowushball.Disconnect
lineandclear.
c.Inspectandcleanpumpvalves.
Replaceifneeded.
d.Disassemblelinesandclean.
a.Checkinputpower,circuit
breakerandfuse.
b.Tightenorreconnectwiresat
pumpandvacuumtank.
c.Makecertainwiresatvacuum
switchareconnectedtothe“B”
terminals.
d.Tocheckvacuumswitch,short
across“B”terminalswithjumper
wire.
e.Replacemotor.
a.Verifypumppullsminimum10
in.Hgofvacuum.
b.Seeproblem9.
c.Tocheckswitch,removeone
“B”terminalwire.
d.Checkwiring.RefertoWiring
Diagram(page8).

15
Problem Possible Cause Service Instructions
TROUBLESHOOTING (cont’d)
CLEARING BLOCKAGE IN TOILET BASE
1. Turnoffwatertothetoilet.
2. Presspedaltoopentheushball.
3. Useaplungertodislodgetheforeignmaterialfromthe1-inchdiameteroriceatthebottomof
thebase,oruseasmalldiameterbluntrodtoattempttopushtheblockagethroughtheorice.
4. Makesurevacuumactionpullsmaterialintodischargelinebeforeturningonwatersupply.
13.Vacuumpumpismakinga
loudnoise.
14.Vacuumpumprunningtoo
slow,overheating,blowing
fusesorcircuitbreakers.
15.Difcultyinemptyingwaste
fromholdingtank.
16.Vacuumpumpemitsodor.
17.Systememitsodor.
a.Loosesetscrewincrank
assembly.
b.Pumpbearingisworn.
c.Dirtordebrisinpumpbody.
d.Wornordefectivemotor.
e.Motorloosefrommounting
bracket.
a.Impropervoltage.
b.Looseorbrokenelectricalwiring.
c.Improperwiresize.
d.Motorwornordefective.
e.Tankisoverlled–airpumpforced
topumpwater.
a.Thetoiletpedalisnotlockedopen
duringholdingtankpump-out.
a.Worn,torn,orpuncturedpump
diaphragm.
a.Checkforimproperexiblehose.
a.Removecoverfrompumpand
checkcrankassemblysetscrew
fortightness.
b.Checkpumpbearingforwear.
Replaceifneeded.
c.Disassembleairpumpassem-
blyandinspectinsideofpump
bodyforforeignobjects.
d.Replacemotorassembly.
e.Tightenthefour(4)screws
securingthemotortothe
mountingbracket.
a.Checkinputpowerforlow
voltage.
b.Tightenorreconnectwires.
c.Wiresizetoosmall–check
electricaldiagramforproper
wiresizeforvoltageofpump
used.
d.Checkmotorandreplaceif
necessary.
e.Disassembleairpumpand
emptyoutwater.
a.Lockthetoiletpedalopen
(see“HoldingTankPump-out
Operation”,page10).
a.Replacepumpdiaphragm.
a.Replacehosewherenecessary.
TOILET MODEL IDENTIFICATION
Themodelidenticationlabelislocatedonthe
baseofthetoilet.Itshowsthemodelnumberand
serialnumberoftheproduct.Asimilarlabelisalso
locatedonthevacuumholdingtank.
ORDERING PARTS
Dometic is ready to assist you in the event
serviceisrequired.Beforecalling,pleasehavethe
followinginformationavailable:
1. Toiletmodelnumber.
2. Partnumber,description,color(if
applicable),andquantity.Referto
separatepartslistfordetails.

16
®Registered;™TrademarkofDometicCorporation
 DometicCorporation
60034539504/13
CUSTOMER SERVICE
Thereisastrong,worldwidenetworktoassist
inservicingandmaintainingyoursanitation
system.FortheAuthorizedServiceCenternear
you,pleasecallfrom8:00a.m.to5:00p.m.
(ET)MondaythroughFriday.
Youmayalsocontactorhaveyourlocaldealer
contactthePartsDistributornearestyoufor
quickresponsetoyourreplacementparts
needs.Theycarryacompleteinventoryforthe
SeaLandproductline.
Telephone: 1800-321-9886U.S.A.andCanada
  330-439-5550International
Fax:  330-496-3097U.S.A.andCanada
  330-439-5567International
Website: http://www.DometicSanitation.com
  http://www.Dometic.com
MANUFACTURER’S ONE-YEAR LIMITED WARRANTY
DometicCorporationwarrants,totheoriginalpurchaseronly,thatthisVacuFlushvacuumtoiletsystem,ifusedfor
personal,familyorhousehold-likepurposes,andifinstalledaccordingtoDometic’srecommendedprocedures,isfree
fromdefectsinmaterialandworkmanshipforaperiodofone(1)yearfromthedateofpurchase.
IfthisDometicproductisplacedincommercialorbusinessuse,itwillbewarranted,totheoriginalpurchaseronly,to
befreeofdefectsinmaterialandworkmanshipforaperiodofninety(90)daysfromthedateofpurchase.
Dometicreservestherighttoreplaceorrepairanypartofthisproductthatproves,uponinspectionbyDometic,tobe
defectiveinmaterialorworkmanship.Alllaborandtransportationcostsorchargesincidentaltowarrantyserviceare
tobebornebythepurchaser-user.
EXCLUSIONS
INNOEVENTSHALLDOMETIC BELIABLEFORINCIDENTALORCONSEQUENTIALDAMAGES,FORDAMAGES
RESULTINGFROMIMPROPERINSTALLATION,ORFORDAMAGESCAUSEDBYNEGLECT,ABUSE,ALTERATION,
ORUSEOFUNAUTHORIZEDCOMPONENTS.THIS INCLUDES FAILURESWHICHMAYRESULTFROMNOT
FOLLOWINGTHEWINTERIZATIONORCLEANINGPROCEDURESASDESCRIBEDINTHISMANUAL.ALLIM-
PLIEDWARRANTIES,INCLUDINGANYIMPLIEDWARRANTYOFMERCHANTABILITYORFITNESSFORANY
PARTICULARPURPOSE,ARELIMITEDTOAPERIODOFONE(1)YEARFROMDATEOFPURCHASE.
IMPLIED WARRANTIES
Nopersonisauthorizedtochange,addto,orcreateanywarrantyorobligationotherthanthatsetforthherein.
Impliedwarranties,includingthoseofmerchantabilityandtnessforaparticularpurpose,arelimitedtoone(1)year
fromthedateofpurchaseforproductsusedforpersonal,familyorhousehold-likepurposes,andninety(90)daysfrom
thedateofpurchaseforproductsplacedincommercialorbusinessuse.
OTHER RIGHTS
Somestatesdonotallowlimitationsonthedurationofanimpliedwarranty,andsomestatesdonotallowexclusions
orlimitationsregardingincidentalorconsequentialdamages;so,theabovelimitationsmaynotapplytoyou.This
warrantygivesyouspeciclegalrights,andyoumayhaveotherrightswhichvaryfromstatetostate.
Toobtainwarrantyservice,rstcontactyourlocaldealerfromwhomyoupurchasedthisproduct.
Dometic Corp, Sanitation Division
13128StateRt226,POBox38
BigPrairie,OH44611
SeaLandProductCustomerService:1-800-321-9886
Email:[email protected]
www.DometicSanitation.com
Dometic Group is a customer-driven, world-leading
provider of leisure products for the RV, automotive,
truck and marine markets. We supply the industry and
aftermarket with a complete range of air conditioners,
refrigerators, awnings, cookers, sanitation systems,
lighting, mobile power equipment, comfort and safety
solutions, windows, doors and other equipment that
make life more comfortable away from home.
Dometic Group supplies a wide range of workshop
equipment for service and maintenance of built-in air
conditioners. Dometic Group also provides specially
designed refrigerators for hotel rooms, ofces,
wine storage and transport and storage of medical
products.
Our products are sold in almost 100 countries and are
produced mainly in wholly-owned production facilities
around the world.