
TANK MONITOR SYSTEMS
4
INSTALLATION
Adjustable Tank Probe Cap
1. Thetankprobecapisdesignedfora3-inchFPTopening.Orderpartnumber230272iftankismadeofrigid
materialandisnotaSeaLandholdingtank.
2. Loosencompressionnuts on adjustable probesandinstallthecapintothetank.Slidethe#1probedown
untiltheoattouchesthebottomofthetank.Tighten#1compressionnutandmarktheprobeatthetopof
thenutwithapenorpencil.Donotcuttheprobe’stubingatthismark.Loosenthecompressionnut,slide
theprobeup,andcarefullycutthe#1probe’stubing1-5/8inch(41.3mm)belowthemarkwithoutdamaging
theswitchwires.Pullthewiresthroughtheblackwirecoverandpushtheprobedownintothecompression
nutuntiltheblackwirecovertouchesthecompressionnut.
3. Removecapfromtankandadjustthe#2probefor1/2fulllevelforgrayandblackwatertanksor1/4fulllevel
forfreshwatertanks.Tightenthecompressionnutandcuttheprobe’stubingoff3/8-inch(9.5mm)abovethe
compressionnutwithoutdamagingtheswitchwires.Sliptheblackwirecoverontothetopofthestem.
4. Tomakethe#1oatswitchactivatethe“Empty”light,theoatmustbepositionedwiththerecessedshoulder,
whiteband,ortheletters“NO”atthebottom.RemovetheC-clipfromtheswitchbody,iptheoat180degrees,
andreplacetheC-clip.(SeeDiagram#1.)
5. The#2oatswitchcanactivatethe“Mid”lightonblackandgraywatertanksandactivatethe“Low”lighton
freshwatertanks.Therecessedshoulder,whiteband,ortheletters“NO”shouldbefacingupforblackand
graywatertanksanddownforfreshwatertanks.(SeeDiagram#2.)
6. Route18-gaugestrandedcopperwirefromtheindicatorpaneltothelevelindicatorcap.Usequick-discon-
nectterminalsonoatswitchwirestopreventtwistingwireswhenremovingthecap.Withcapremovedfrom
thetank,connectthewiresaccordingtothewiringdiagramandtesttheoatsbymovingthemupanddown.
DisconnectthewiresandinstallthecapwiththeO-ringintothetank,thenreconnectthewires.
7. Forcapswithvents,route5/8-inchventhosefromthethrough-hullttingtotheventconnectiononthelevel
indicatorcap.Usestainlesssteelhoseclampstosecuretheventhoseconnection.
Monitor Panel
1. Selectamountinglocationawayfromdirectcontactwithwaterandoil.Drylocationsinthebathroom,salonor
galleyaremostdesirable.
2. Conrmclearancesforthepanelandwireconnectionsbehindwalls,hulllinerorbulkhead.
3. Cutoutmountingholes(seetemplateforpaneland
fastenerholelocations.)
4. Donotmountthecircuitpaneluntilwiringisrouted
andproperlyconnected.
5. Routewiresfollowingtheappropriatewiringdiagram
forblack,grayorfreshwaterapplications.
6. Includewiresforoptionalelectricalaccessoriesthat
may be part of the installation and shown in separate
wiringdiagrams.
7. Installthecircuitpanelwiththefour#6 fasteners
provided.Makesuretoinstallwiththe“UP”arrow
pointingintheproperdirection.
8. Pushthepanelcoverontothecircuitpaneluntilit
snapsintoplace.
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