Mech Anical Seal - salmson NEX Manuel D'installation Et Mise En Service

9 . 3. 2. 6 SETTIN G IMPELLER C
This procedu re may be req
dismantled or a different cleara
Before carryin ng out this proc
seal(s) [4200] fitted can toler
oth erwise it will be necessary to dis
axia al position after a adjusting the imp
Sett ting open impelle er clearance :
1. T Turn the bearing c carrier 3240 cloc
into o light contact wit th the front profi
2. R Rotating the shaf ft 2100 at the sa
whe en a detectable r ub is obtained. T
Rot ating the bearin ng carrier 3240
patt terns cast into th he bearing carrier
mm m.
3. U Use the indicato or pattern closes
hou using as the refer ence point to beg
Exa mple: to move t the impeller bac
bea aring carrier coun nterclockwise fou
clea arance.
Front imp
Temp
Impelle er Ø Impeller Ø
ºC
<210 m mm 211 to 260 m
50 0.3
100 0.4
150 0.5
200 0.6
250 0.7
4. A After obtaining th he proper clearan
the screws 6570.1 evenly to lock
embly. Tightenin
asse ng the set screw
mov ve 0.05 mm close er to the rear cov
in t he bearing carrie er threads. This m
imp peller clearance.
5. C Check that the sha aft 2100 can turn
6. If f a cartridge seal 4200 is fitted it s
7. E Ensure the coupli ng distance betw
alig n if necessary.
Sett ting reverse vane e impeller rear cl
Rev verse vane impell lers are set off th
be s set without the c asing.
1. Turn the bearing T g carrier 3240 c
220 00 comes into ligh ht contact with th
2. R Rotating the shaf ft 2100 at the sa
whe en a detectable r ub is obtained. T
LEARAN CE
quired after the e pump has be
ance is required.
cedure ensure th hat the mechan
their axial setti
rate a change in
smantle the unit t and reset the s
eller clearance.
ckwise until the im mpeller 2200 com
ile on the casing 1100.
ame time will ac ccurately determ
his is the zero cle earance setting.
the width of on ne of the indica
r moves the impe eller 2200 axially
t to the top cen ntre of the bear
gin adjustment.
ckward of 0.4 m m, simply turn t
ur indicator patte rns for the requi
peller clearance mm
Impeller Ø (*)NEX150‐400
>260 mm (*)NEX200‐400
mm
(exept *) (*)NEX150‐500
0.4 0.5 1.0
0.5 0.6 1.0
0.6 0.7 1.1
0.7 0.8 1.2
0.8 0.9 1.3
nce, listed in the t table above, tight
the impeller 22 00 and shaft 21
ws 6570.1 will ca use the impeller
ver because of th e internal clearan
must be considere ed when setting t
n freely without b binding.
should be reset at t this point
ween shaft ends is correct. Reset/
learance :
he cover. This all ows the impeller
counter‐clockwise e until the impe
he rear cover 122 20.
ame time will ac ccurately determ
his is the zero cle earance setting.
een
ical
ing,
seal
Ro otating the bear
pa atterns cast into t
m m.
3. Use the indicat
ho ousing as the refe
Ex xample: for an im
ca rrier clockwise fo
mes
mine
ator
0.1
ring
the
red
4. After obtaining t
th e set‐screws 657
as sembly. Tighteni
0.0 05 mm closer to
be earing carrier th
im mpeller clearance.
5. Check that the s
6. If a cartridge sea
7. Ensure the coup
ali ign if necessary.
9. 3.3
Th he following sec
dim mensions provid
EN 12757 sizes
to
of fice or service c
m echanical seal d
ar rangement supp
9. 3. 3. 1 SINGL
 B
Balanced mechan
ten
100
r to
nce
the
 S
Single unbalanced
/re‐
r to
eller
mine
19
ing carrier 3240 0 the width of o
the bearing carrie er moves the imp
or pattern close est to the top ce
erence point to be egin adjustment.
mpeller setting o of 0.4 mm simp
our indicator patt terns for the requ
the proper cleara ance, listed in the
70.1 evenly to lo ock the impeller
ng the screws 65 570.1 will cause t
the rear cover be ecause of the inte
hreads. This mus st be considere
.
haft can turn free ely without bindi
al 4200 is fitted it t should be reset
pling distance bet tween shaft ends
MECH ANICAL SEAL LS SETTING D
ction shows deta tails of the seal
ed are for non b balanced mechan
L1K and L1N. C Contact your nea
centre if you req quire further inf
dimensional draw wing, or are un
lied. Refer also to o section Auxiliar
E MECHANICA A L SEA LS
nical seal :
d mechanical sea al (or inherently b
Bracket Settin ng dimension (mm)
size
X
1 23.5 5
2 34.0 0
3 33.5 5
4 51.5 5
EN
NGLISH
one of the indic cator
peller 2200 axially y 0.1
entre of the bea aring
.
ly move the bea aring
uired clearance
e table above, tig hten
2200 and shaft 2 2100
the impeller to m move
ernal clearance in n the
the
d when setting
ng.
at this point.
s is correct. Rese t/re‐
DIMENSIONS
arrangements.
The
ical seals conform ming
arest SALMSON s sales
formation, such as a
nsure of the spe ecific
ry piping.
balanced) :
Y
11.0
19.0
11.0
24.0