Omega Products LVN-141-G Installation Manual

LVN-141/LVN-142
Vertical Level Switch
M-5176/1112
Ins tall ati on:
A st anda r d NP T f em al e bo s s in t ank top, bott o m or si de is all tha t is r equ i red . Un it s op era t e in a ny atti t ude - fr om t he ve rt i­cal to a 30 ° in cl in at io n - wi t h le ad wire s up o r d own. S ta nd ar d IP S pi p e e xt en ds uni t s to an y i nte r med i at e le v el in the ta n k . Moi s tu re Pro t ec ti on : W h en mo ist u re ex is ts i n con d uit an d ext e ns ion pi pe s, th e po t ent i al fo r th is m ois t ure to "wic k" do w n the w i re le ad s a n d in to th e s wit c h ass e mbl y e xi st s. Sh o uld thi s ha ppen , the s wi tc h wi ll ap pea r to b e cl o sed d ue t o a hi gh res i st ance p at h thr o ugh the m ois t ure . Th e fo llow i ng s u gg es­tio n s ma y h elp to p rev e nt t hi s fr om h appe n in g:
1. P itc h c ondu it a way f rom the lev e l s w itc h , so t hat c ond e nsa ­tio n w i ll d rip a wa y f ro m t h e leve l sw i tch as se mbl y.
2. W he n a ve rti cal run of ex t ens ion pi pe is us ed to ext e nd a lev e l s wi t ch dow n fr om the to p of t he ta nk , a no n -co n duc t iv e sil i con e oil shou l d be us ed t o fi ll t he v e rt i cal run. Al te rnat i ve­l y, an ap pro p ri at e pot ting ma y be u sed to fi ll the ve rti c al run to o cc up y t he s pac e in whi c h co nde n sa ti on w il l no r mal l y fo rm . CAU T ION LV N -1 4 1 an d LV N -1 42 lev e l pro d uct s i nc or por a te a pot t in g c a p or ar e fu l l y po t te d. D ue to the bo n di ng c ha ra ct er ­ist i cs of th e po tti n g t o t he wi r e lead s , t he re i s n o wa y of as­sur i ng a w at e r -ti g ht se al a t the pot t ing jo i nt . Ou r po tt ing cap wi ll res i st m o ist u re t o som e deg re e, b u t th e pre caut i ons me n­tio n ed a bov e sho u ld b e us e d to a ss ure mo ist u re d oes n 't en te r the swi t ch and cau s e a sh or t. Thr e ad T rea t men t 1. S ea l ing : W he n th r ead i ng m eta l th r ead s int o a me tal c oup l in g, pi pe s ea la nt or PFA ta p e is re com me nd ed. D ue to p ot en ti al co mpa t ib ility pr o b­lem s , w hen s ea l ing pla s tic thr e ade d un i ts , a comp atib l e p i pe s ea la nt i s reco m men d ed.
2. Ti ght e ni ng: Wh en th read i ng a pl as ti c le v el s w it ch int o a met a l co u pli n g, th e in stal l er sh oul d u se a suit a ble wren c h an d tig h te n th e th r ead s o ne t o on e and on e ha l f a d dit i ona l t ur ns pas t ha nd -t igh t . O ver -t orq uin g of the thr e ad s wi l l r e s ul t in dam a ge to t he p las t ic m oun t in g plu g .
Part Number Mounting HEX Size Float Diameter
LVN-141 1/8” NPT 1/2” 1”
LVN-141-G G 1/8” 9/16” 1”
LVN-141-M12 M12 5/8” 1”
*LVN-142 1/8” NPT 1/2” 1”
*LVN-142-G G 1/8” 9/16” 1”
*LVN-142-M12 M12 5/8” 1”
*Plastic sensors made from NSF approved material safe for use in potable water.
Ele ctr i cal Dat a
See T yp ical W i ri ng Di agra m . Co n ne c t le a d wi r es t o lo ad ci r cu it , us i ng a ppr o ved met h od. C a ut ion: S ee s pe c ifi c a ti ons ab ov e a n d “S wit c h Rat i n gs ” b efo r e con ­nec t in g po wer. Sta n da rd re ed sw i tch es i n OMEG A le v el sw i tch un i ts are he r m et ical l y - se ale d , mag n et ic al ly actu a ted , ma ke-a n d-b r eak ty pe. Sw i tch es a re SPS T or SP DT and are ra te d in V ol t- A mps (V A) . S ee th e a dj ac ent ch ar t fo r max i mum lo ad ch a ra c­ter i st ic s of OME GA le vel s wit c hes . CAU T ION : Co ntac t pro t ec ti on is re q uir e d fo r tra n si ent or h i gh i n -ru s h c urr e nt. Con t ac t OME G A f o r m o re d et a i ls . Eur o pe an P ress u re D ire c ti ve A dd en dum The pr odu c t is de s ign e d a nd m an uf actu red in ac c or da nc e wi th So u nd En g ine e rin g P rac ­tic e a s de f ine d by th e Pre s su re Equ i pm en t Di rec t iv e 97/ 23/E C . Th i s p rodu c t m us t no t be u se d a s a “sa f ety a cc essor y ” as def i ne d by th e Pr ess ure E qui p m en t Di r ec t ive , Ar tic l e 1, Pa rag raph 2. 1.3. The pr e sen c e of a C E Ma r k o n th e un i t do es n ot rel a te t o t h e Pr es sure E qu i pme n t D i rec t iv e.
Thi s pr o duc t is s ui ta bl e fo r Cla ss I a nd C l as s II a p pl icat i ons o nl y, pe r th e re ­qui r em ents of st and a rd EN 6 0 73 0 an d any ad dit i ona l sp ec ific r eq ui reme n ts fo r a par t ic ular ap pli cati o n o r med i um bei n g se nsed . Cl as s I co mpl i anc e o f m et al b odi e d uni t s req ui re s a gr oun d c on­nec t io n b etw e en th e m et al bod y a nd t he ea rt hi ng s ys t em of the in stal l ati o n. Cl a ss I comp li an c e of pl a sti c b od i ed uni t s i n co nta c t w ith a co nd ucti ve me diu m re q ui res t ha t th e me d ium be eff e cti v el y ea r the d so as t o p rov i de an
ear t he d b ar r ier b etwe en t h e un it an d acc e ssi b le a r eas . For C l as s I II c omp li an c e, a s upp l y at s afe t y extr a -lo w vol t ag e (S E LV) mus t be pro v id ed . P l eas e c onsu lt t h e F a cto r y fo r c o mpl i anc e i nfor m ati o n o n s pe cif i c p a rt num bers . Im port ant p oin t s: Pro d uc t mus t be m ai ntai n ed an d i nsta l led i n st ri ct a ccor danc e wi th th e Na t ion a l E lect r ica l Co de an d OM E GA p rod u ct ca ta ­log an d in s tru c tio n bu l let i n. F ai lure to o bse r ve t hi s wa r n in g co uld r es ult i n s e rio u s i n jur i es o r da mag e s. An ap p rop r iat e expl o sio n -pro o f enc l osu r e or int r in sica l l y sa fe i nte r fa c e d ev ic e m us t be used fo r h aza r do us a rea ap pli ca­tio n s invo l vin g su c h t h ing s as (b ut n o t l i mit ed t o ) igni t abl e mi xtu re s, com bust i ble dus t a nd f lamm ab le m at eria l s. *** W ar n ing : T o pr e ven t i gnit i o n of f lamm ab le or c om bu st ible atm os ph e res , d isco nnec t po wer b efo r e s e rvi c ing . Pre s su re a nd t e mpe r atu r e l i mit a tio n s show n on ind i vid u al c ata l og p ag es a nd d r a wi n gs f or t he s pec i fi ed l evel swi t ch e s m ust no t be ex ce ed ed . Th e se pr e ss ur es and te m per a tu res tak e in to co ns id er at ion pos si bl e sy st em su rg e pr es­sur e s/ temp e rat u res and the i r fr equ e nc ies. Sel e cti o n of m ater i al s fo r co m pat ib il it y with th e me d ia i s c r iti c al t o the l ife and op er at io n of O MEGA lev e l s wit ch es . Ta k e car e i n th e pr o per sel e ct io n o f m at er i als of c on stru ctio n ; pa rt ic ula r ly w et ted m ate r ial s . Lif e e xpec t anc y of swi t ch c on tact s va r ies wit h a pp li cati ons. Amb ient te mp er atur e ch a nge s d o af fect swi t ch s et poi n ts, sin c e t he s p ec if ic gra vity of a l iq ui d can va ry w i th t emp erat u re. Lev e l sw it ches hav e be e n de si gn ed to r esi s t s h oc k and vi br at io n; how e ver , sh o ck a nd vib rati o n s h oul d b e min i miz e d. Liq u id m ed ia c o nt ai nin g p ar ti cula te a n d/o r d eb ri s sh ould b e f ilt e red to e nsu r e p r ope r o pera tion of O MEG A pr o duc t s. Ele c tri c al ent r ies and mou n ti ng po i nt s ma y re q uir e li q ui d/ va po r se al ing i f l o ca te d in a n en c los e d t ank. Lev e l sw it ches mus t no t be fi eld repa i re d. Phy s ic al d a mag ed s u st ai ned by t he p ro du ct m ay ren d er i t u n se rv ice a bl e.
Wiring Diagram
240397 rev A
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