Omega FSW-120 Series Owner's manual

FSW-120 Series

Molded Flow Switch

Specifications

Wetted Parts

Housing and Piston

PPS Resin - R4

O-Ring

FKM

Other Wetted Parts

Epoxy

Spring

316 Stainless Steel

Operating Pressure

250 psig at 70° F

Operating Temperature

-0° to +225°F (-17°C to +100°C)

Set Point Accuracy

15%, Maximum

Set Point Differential

20%, Maximum

Switch

SPDT, 20 VA

Inlet/Outlet

9/16” - 18 UNF - 2B Thread

Electrical Termination

18 AWG, 24” L., PVC Lead Wires

Installation: FSW - 120 unit s are fact o ry -c a l ibr a t ed with w at e r in v erti c al pos i tion , wi th le a d wires up. O b serve p r o pe r

dire c tion o f li q ui d fl o w, as mar k ed “ IN” a nd “ OUT ” on h o us i ng. Can b e in s ta l led i n an y ori ent a tion .

Be careful to k eep foreign mater i al o ut o f u n i ts d urin g inst a l lat i on . Use of 50 mic r o n f i ltr a t ion is re c omm ended . A l l p l ast i c

NP T threads sho uld be inst a lle d using a sui t a ble th r e ad seal a nt . (S u ch as Teflo n tape or Pe r m ate x “N o More Leak s.” )

Sea l ant m ust b e k e pt ou t o f unit dur i ng i n s t a l lat i on.

Avo i d o v er - tigh t ening whe n con n e cti n g pi p ing to u n it, which is c o nstru c te d of p l asti c m ateri a l. Conne c tion of m et a l li c pip-

ing t o pl a s tic u ni t s i s not r e c o m m e nded.

WARNING: FSW-120 flow switches are plastic, straight-thread, “O” ring sealed instruments.

Over-tightening will result in breakage.

Port Adapter Fittings: In s t a l l pl a sti c ad a p te r s wi t h O -rings (su p pli e d ) d i rect l y i nto “ IN ” an d “O U T” p ort s b e fo r e i n -

stal l ing u n it. CAUT ION: D o no t exc e ed 20 i n ch - pound s maxi m u m to r q u e whe n i nst a l li n g ada p t er f itti n gs. H o ld wre nch fl ats

on ad a pters as in dic a t ed b e l o w when i n s t a l li n g unit i n pip i ng t o prev ent a ddit i onal torq ue acc um u l ati o n bet w een a d apt e r

and b o d y. (N o te: Por t ada p ter f itt i n gs m us t be p u r c h a se d sep ara t e ly.)

Maintenance: T he o n l y m a inte n a nc e norm all y re qui r ed i s o c cas i onal cle a n ing whe n e xc e ss i ve c ontam inat i on i s pr e -

sent in t h e l i quid . To di sas s embl e the u n it f or c leani n g: W i t h s ys t em shut d o wn an d n o l i quid in p i ping , remo v e ( 1 ) Pis t on

Pl u g , (2) S p ring , a nd ( 3 ) P i sto n . It i s not ne c es s ary to r em ove th e u nit f r om t h e s ys t em. R eass em b le un i t in r e v erse o rde r

(#3 t o #1 ) . Us e c a r e w hen h andl ing s prin g t o pre v ent d i st o rtio n .

M-5170/1112

Important Points: Om e g a pro d u cts m u s t be m ai n t aine d a nd i n s tal l ed i n st r ict accor dance with the National E lectrical

Code a nd t h e ap p l ica b l e O m eg a pro d u ct in s t ru c tion Bul l eti n t h at c o vers inst a l lat i on, oper a t io n and pro p e r mai nte n a nc e .

Fail u re t o obs e rve this inf orm a t ion m a y r e sul t in s e ri o us i n j ur y o r dam a ges.

For ha z a r dou s area a p p lic a t ion s invol v ing suc h thin g s as , but no t lim i ted to, ign i tabl e mixtu re s , combu s t ibl e dust and

fla m m a b le m ateri a ls, u se a n ap propri at e expl o s io npr o o f e n clo s ure o r i ntri n s ica l l y s a fe i n te r f ac e devi c e.

Pl e a se a d he r e t o t he p res s ur e and tempe ratu re l im i tat i ons s ho w n t h rou g h out this cata l og for our l evel and flo w s e n so r s .

The s e lim ita t ions m ust n o t be exc e e de d . Thes e pre s s ur e s an d t emp e r atu r e s tak e int o c onsi dera t i on p ossi b le s ystem

surge pre s sur e s/ t e m per atur es and t h e i r freq uenci e s.

Sel e cti o n of m ateri als f or c omp a ti b i li t y wit h the m edi a i s cri t ical t o the l i fe a nd o pera t i o n of O m e g a pro d ucts . Ta k e c are i n

the p r o pe r se l ecti o n of m ate ria l s o f con s tr u c tion , tes t i n g is r e q ui red.

Lif e expec t an c y of s wit c h c ontac ts v arie s wit h ap p l ic a t ion.

Am bient tem p e ratur e ch a n ge s do a ffec t s wi t ch s e t p o ints , si n c e the g ravi t y o f a l i qui d c a n var y wit h tem p era t ure .

Our s e ns o r s ha v e b e en d esi g ne d to re s ist s ho c k a n d vi b rati o n. Howev er, s ho c k a n d vi b rati o n s houl d b e mi n im i zed.