Flowserve WDX R/C - 1.6.4 Products Used in Potentially Explosive Atmospheres; 1.6.4.1 Scope of Compliance

WD X U SE R I N S TRU CT IO N SE N GLIS H 71576322 06 - 05
Page 6 of 46
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H A Z A RD O U SLIQ U I D S
W hen the pu m p is hand li ng ha z a r dou sli qu i d sc a r e m u s t
be ta
k en to a v o i de x po s u r etothe li qu i db y app r op ri ate
si tt i ng of the pu m p, limi t i ng pe rs onne l a cc e ss and b y
ope r ato r t r a i n i ng.Ifthe li qu i d is f l a mm ab l e and/o r
e x p l o si v e, s t ric t s afet y p r o c edu r e sm u s tbeapp li ed.
Gla nd p acki ng m u s t not b e u se d w h e npu m p i ng
h
a z ar dou sli qu i d s.
P R EVE NT EX C ESSIVE EX T E RN AL
PIPE LOA
D
D
onotu s epu m pa s a s uppo r tfo r p i p i ng. D onot m ount
e
x pan si on j o i nt s ,un l e ss a ll o w ed b yFl o ws e rv e i n
wri t i ng, s othatthe ir fo rc e, due to i nte r na l p r e ss u r e,
a
c t s on the pu m pf l ange.
E N S UR E C O RR E CT L U B R I C A T IO N
(
See s e c t i on 5, C o mmissi on i ng, s ta r tup, ope r at i on and
s hutdo w n . )
S T A RT T H EP UM P W I TH O UT LE T
VALV E PA RT OPE N E D
(U
n l e ss othe rwi s e i n s t r u c ted at a s pe ci f ic po i nt i nthe
Us e r In s t r u c t i on s . )
T
h is is r e c o mm ended to mi n imiz ethe risk of
o
v e rl oad i ng and da m ag i ng the pu m p m oto r at fu ll o r
z
e r of l o w .Pu m p sm a y be s ta r ted wi th th e v a lv efu r the r
open on ly on i n s ta ll at i on sw he r eth is si tuat i on c annot
o
cc u r .Pu m p out l et v a lv e s ha ll m a y need to be
ad
j u s ted to c o m p ly wi th the dut y fo ll o wi ng the r un - up
p
r o c e ss . ( See s e c t i on 5, C o mmi ssi on i ng s ta r t - up,
ope
r at i on and s hutdo w n . )
N EVE RRUNTH EP UM P DR Y
I N LE T VA L V E S T OBE FU LLY OPE N
WH
E N P UM PIS RUNN I N G
R unn i ng the pu m pat z e r of l o w o r be l o w th e
r e c o mm ende d mi n im u m f l o wc ont i nuou sly wi ll c au s e
da
m age to th e s ea l .
D O N O TRUNTH EP UM PA T
AB N O RM ALLY H IG H O R LO WF LO WR A T ES
Ope
r at i ng at a f l o wr ate h i ghe r than no rm a l o r at a f l o w
r
ate wi th no ba ck p r e ss u r eonthepu m p m a y o v e rl oad
the
m oto r and c au s e c a vi tat i on s .Lo w f l o wr ate sm a y
c
au s ea r edu c t i on i npu m p/bea ri ng li fe, o v e r heat i ng of
the pu
m p, i n s tab ili t y and c a vi ta t i on s / vi b r at i on.
1.6.4 Pr odu c t s u se d i n pot e nt ially ex p l o sive
a
t m o s ph eres
M ea s u r e s a r e r equ ir ed to:
 A v o i de xc e ss te m pe r atu r e.
 P r e v ent bu il dupofe x p l o si v e mix tu r e s .
 P r e v ent the gene r at i on of s pa rks .
 P r e v ent l ea k age s .
 M a i nta i nthe pu m ptoa v o i dha z a r d.
T he fo ll o wi ng i n s t r u c t i on s fo r pu m p s and pu m pun i t s
w
hen i n s ta ll ed i n p otent i a lly e x p l o si v eat m o s phe r e s
m
u s tbefo ll o w ed to he l pen s u r ee x p l o si on p r ote c t i on.
Both e
l e c t ric a l and non - e l e c t ric a l equ i p m ent m u s t m eet
the
r equ ir e m ent s of Eu r opean Di r e c t iv e94/9/E C .
1.6.4.1 Sc op e of c o m p lia n ce
Us eequ i p m ent on ly i nthe z one fo rw h ic h i t is
app r op ri ate. A lw a ys c he ck th at the d ri v e r ,d riv e c oup li ng
a
ss e m b ly , s ea l and pu m pequ i p m ent a r e s u i tab ly r ated
and/o
rc e r t i f i ed fo r the cl a ssi f ic at i on of the s pe ci f ic
at m o s phe r e i n w h ic hthe y a r etobe i n s ta ll ed.
W he r e Fl o ws e rv eha ss upp li ed on ly th e ba r e s haft
pu
m p, th e E xr at i ng app li e s on ly to the pu m p. T he pa r t y
r
e s pon si b l efo r a ss e m b li ng the pu m p s et s ha ll s e l e c tthe
c oup li ng, d riv e r and an y add i t i ona l equ i p m ent, wi th th e
ne
c e ss a ry C E D e cl a r at i on of C onfo rmi t y e s tab lis h i ng i t
is s u i ta b l efo r th e a r ea i n w h ic h i t is to be i n s ta ll ed.
T he output f r o m a v a ri ab l ef r equen cy d ri v e ( V FD) c an
c au s eadd i t i ona l heat i ng affe c t si nthe m oto r and s o, fo r
pu m p ss et swi thaV FD ,theA T EX C e r t i f ic at i on fo r the
m oto rm u s t s ta te tha t i t is c o v e rs the si tu at i on w he r e
e
l e c t ri c a ls upp lyis f r o m th e V FD . T h is pa r t ic u l a r
r
equ ir e m ent s t ill app li e s e v en i ftheV FDis i na s afea r ea.