Flowserve WDX R/C User Manual

WD X U SE R I N S TRU CT IO N SE N GLIS H 71576322 06 - 05
Page 27 of 46
®
Moto rra t i ng k W(hp)
M
axim u ms top /s t ar t s
p er hou r
U pto15 ( 20 ) 15
Bet w een 15 ( 20 ) and 90 ( 12 0 ) 10
90 ( 120 ) to150 ( 200 ) 6
Abo v e150 ( 200 )R efe r
W he r edut y and s tandb y pu m p s a r e i n s ta ll ed i t is
r
e c o mm ended that the y a r e r un a l te r nate ly e v e ry w ee k .
5.8 S topp i ng a nd s hutdo w n
a ) Cl o s e the out l et v a lv e, but en s u r e
that the pu
m p r un si nth is c ond i t i on fo r no m o r e
than a fe
ws e c ond s .
b
) Stop the pu m p.
c) A v o i dha vi ng the un i ttu r n i n the oppo si te
d
ir e c t i on of the no rm a lr unn i ng c ond i t i on s
d ) P r ote c tthe pu m p aga i n s t w ate r ha mm e r .
e
)M a k e s u r ethatthed isc ha r ge li ne p r e ss u r edoe s
not r ea c h the foot v a lv e.
f
) S wi t c hofff l u s h i ng and/o rc oo li ng/heat i ng li qu i d
s upp li e s at a t im eapp r op ri ate to the p r o c e ss .
g
) F o r p r o l onged s hut - do w n s and
e
s pe ci a lly w hen a m b i ent te m pe r atu r e s a r e lik e ly
to d r op be l o w f r ee zi ng po i nt, the pu m p and an y
c
oo li ng and f l u s h i ng a rr ange m ent sm u s tbe
d
r a i ned o r othe rwi s ep r ote c ted. W hen d r a i n i ng
the pu
m p, f irs t v e ri f y th at the li qu i dte m pe r atu r e
ha
sc oo l ed s uff ici ent ly to a ll o ws afe m a i ntenan c e.
5.9 H y d ra u lic, mec h a n ical a nd elec t rical
dut y
T h is p r odu c tha s been s upp li ed to m eet the
pe
r fo rm an c e s pe ci f ic at i on s of y ou r pu rc ha s eo r de r ,
ho
w e v e ri t is unde rs tood that du ri ng the li fe of the
p
r odu c tthe s e m a yc hange. T he fo ll o wi ng note sm a y
he l ptheu s e r de ci de ho w to e v a l uate the im p lic at i on s
of an yc hange. If i n doubt c onta c t y ou r nea r e s t
Fl o ws e rv eoff ic e.
5.9.1 S p eci f ic g ravi t y ( SG )
Pu m p c apa ci t y and tota l head i n m ete rs ( feet ) do not
c hange wi th SG, ho w e v e r p r e ss u r ed is p l a y ed on a
p
r e ss u r e gauge is d ir e c t ly p r opo r t i ona l to SG. Po w e r
ab s o r bed is a ls od ir e c t ly p r opo r t i ona l to SG. It is
the r efo r e im po r tant to c he ck that an yc hange i nSG
will not o v e rl oad the pu m pd ri v e r o r o v e r- p r e ss u riz e
the pu
m p.
5.9.2 Visc o si t y
F o r ag iv en f l o wr ate the tota l head r edu c e swi th
i n cr ea s ed vi sc o si t y and i n cr ea s e swi th r edu c ed
visc o si t y .A ls ofo r ag iv en f l o wr ate the po w e r
ab s o r bed i n cr ea s e swi th i n cr ea s ed vi sc o si t y ,and
r edu c e swi th r edu c ed vi sc o si t y .
It
is im po r tant that c he cks a r e m ade wi th y ou r nea r e s t
Fl o ws e rv eoff ic e i f c hange si n vi sc o si t y a r ep l anned.
5.9.3 P u m p s p ee d
C
hang i ng pu m p s peed effe c t s f l o w ,tota l head, po w e r
ab s o r bed, N PS H
R
,no is eand vi b r at i on. Fl o wv a ri e si n
d
ir e c tp r opo r t i on to pu m p s peed, head v a ri e s a s
s
peed r at i o s qua r ed and po w e rv a ri e s a ss peed r at i o
c ubed. T he ne w dut y ,ho w e v e r , will a ls obe
dependent on the
sys te mc u rv e. If i n cr ea si ng the
s peed, i t is im po r tant the r efo r etoen s u r ethe
m a xim u m pu m p w o rki ng p r e ss u r e is not e xc eeded,
the d
riv e ris not o v e rl oaded, N PS H
A
> N PS H
R
,and
that no
is eand vi b r at i on a r e wi th i n l o c a lr equ ir e m ent s
and r egu l at i on s .
5.9.4 N e tpo si t iv e s u c t i on h ea d(N PS H
A
)
N PS H a v a il ab l e (N PS H
A
)is theheada v a il ab l eatthe
im pe ll e ri n l et, abo v ethe v apou r p r e ss u r eofthe
pu
m ped li qu i d.
N PS Hr equ ir ed (N PS H
R
)is the mi n im u m head r equ ir ed
at the
im pe ll e ri n l et, abo v ethe v apou r p r e ss u r eofthe
pu
m ped li qu i d, to a v o i de xc e ssi v e c a vi tat i on and
e
x t r e m epe r fo rm an c edeg r adat i on.
It
isim po r tan t t hat N PS H
A
> N PS H
R
. T he m a r g i n
bet
w een N PS H
A
> N PS H
R
s hou l dbea sl a r ge a s
po ssi b l e.
If an
yc hange i n N PS H
A
is p r opo s ed, en s u r ethe s e
m a r g i n s a r enot si gn i f ic ant ly e r oded. R efe r to the
pu
m ppe r fo rm an c e c u rv etodete rmi ne e x a c t
r equ ir e m ent s pa r t ic u l a rl y i ff l o w ha sc hanged. If i n
doubt p
l ea s e c on s u l t y ou r nea r e s t Fl o ws e rv eoff ic e
fo
r ad vi c e and deta ils of the mi n im u m a ll o w ab l e
m a r g i nfo ry ou r app lic at i on.
5.9.5 P u m p e df l o w
Fl o wm u s tnotfa ll out si de the mi n im u m and
m a xim u mc ont i nuou ss afe f l o ws ho w nonthepu m p
pe
r fo rm an c e c u rv eando r data s heet.
5.10 P u m p s fo r Foo d U se o rP ot a b le
W a t er
If the pu m pha s not been s pe ci f ic a lly o r de r ed fo r a
food o
r d ri n ki ng w ate r app lic at i on i t m u s t not be u s ed
fo
r the s et y pe s of app lic at i on s .If i tha s been o r de r ed
fo
r th is t y pe of app lic at i on the fo ll o wi ng
r e c o mm endat i on s a r etobefo ll o w ed.
5.10.1 C le a n i ng p ri o r to op era t i on
Pu m p s that a r etobeu s ed fo r afoodo r d ri n ki ng
w ate r app lic at i on s hou l dbe cl eaned befo r ebe i ng put
i nto i n i t i a l ope r at i on and afte r the i n s ta ll at i on of s pa r e
pa
r t s that a r e i n c onta c t wi th th e li qu i d.

Flowserve WDX R/C Specifications

General

Brand	Flowserve
Model	WDX R/C
Category	Water Pump
Language	English