Flowserve VTP User Instructions page 39

VERTICA
If, after makin ng the impelle er adjustment
not deliver its s rated capac
lowered one step at a time e until the low
adjustment is s achieved wit
On the other hand, if the im mpellers appe
dragging afte er the initial ad djustment, the
stopped and the impellers
impellers will l increase the
usually be he eard and felt a as increased v
sharp rise in motor amper
impellers are e dragging.
5.3.1 Impe eller adjustm ment for a ho
driv er
Impeller adju ustment when
as follows. T The driver can nopy will have
before begin ning.
a) Install he eadshaft [10] i if not already
b) Install dr river clutch in
instructio on manual and d bolt into pla
c) Check sh haft position.
definite f feel of metal c contacting met
indicates s the impellers s are "on botto
correct s starting positio on for impeller
d) Thread h headshaft nut
threads) except 43 mm m (1.7 in.) and
that are h having left ha
are just r raised off thei
rotate fre eely.
e) Check a separate doc cument that is
the pump p that provide es recommend
setting a nd running cle earance inform
Detail showin ng head shaft t and lock scre
arrangement t
(334) LOC K SCREW
COUPL LING
If a at any time du uring the life of
pumping con nditions or tota al pump length
contact the fa actory for reca alculation of th
setting.
f) Tighten t the adjusting
recomme ended by Flow wserve. See
5.3.1.2.
Page 39 of 7 76
AL TURBINE E PUMPS (VT
the pump doe
ity, the impelle ers can be
est possible
thout the impe ellers draggin
ear to be
e unit should b
raised one st tep. Dragging
load significa antly and can
vibration. A
age will occur r when
ollow shaft
using hollow shaft drivers
to be remove
in place.
accordance w with the driver
ce.
Lower shaft u until there is a a
tal. This
om" and in the
r adjustment.
[66] down (rig ght hand
d larger sizes
nd threads, u ntil impellers
r seat and the e shaft will
supplied with
ded impeller
mation..
ew
HEAD SHAF FT (10)
HEAD SHA AFT NUT (66)
DRIVE ER
GIB KEY(335)
f this pump th he
h changes,
he impeller
nut to match i impeller settin
table 5.3.1.1 &
TPS) CENTRI IFUGAL PUM
g) Us sing the cap s
es nu ut [66] down &
mo otor coupling.
loc ck screw arran
g.
Alwa
be
tighten ning the lock s
g
Failure e to do so cou
and dr river.
h) If a a mechanical
me echanical sea
5.3.1.1 1
Impeller c
Flowse erve recomme
is
setting gs based on th
ed
If the pump size
is
Size 6 thru size
12
Size e 14 and
a above.
e
Shafts e
of the pump and the
for this s elongation.
model depending u
diamet ter, impeller w
h
see the e documenta
for exa act impeller se
specifi c pump that y
5.3.1.2 2
Head sha
He ead Threa
Shaft ft size per eve
m mm 25 mm
(in n.) (1 in.
length
the sh
25 ( (1.0) 14
32 (1 1.25)
38 (1 1.50) 12
43 (1 1.69)
43 (1 1.69)
50 (1 1.94)
10
55 (2 2.19)
62 (2 2.44)
68 (2 2.69)
8
75 (2 2.94)
ng
&
MPS ENGLIS SH 71569224
screw provided d, bolt the hea
& lock using lo ock screw [334
See the deta ails of head sh
ngement unde er item (h) be
ays lock head dshaft nut by
screw [334] b before starting
uld result in d amage to the
seal is used, adjust the
al at this time.
clearance se ettings
ends the follo owing impelle
he pump size es.
Se etting for Setting for se
en nclosed open impelle
im mpellers
3~4 mm 0.25 mm to 0
( (0.13~0.15 in.) (0.010 in. to 0
6~7 mm 0.63 mm to 0
( (0.25~0.27 in.) (0.025 in. to 0
longate due t to the hydraul
e impellers m must be compe
Shaft elonga ation varies fo
pon the size, shaft length,
weight, numb er of stages.
tion supplied along with th
etting value m matched for th
you have purc chased
aft nut adjus tment
ds La ateral adjustmen
ery mm (in.)
m One com mplete Each
.) turn of nu ut will
h of
result in shaft
haft
movemen nt of
1.8 81
(0.07 70)
2.1 1
(0.08 80)
2.5 54
(0.10 00)
3.1 7
(0.12 20)
flowse
4 – 02-15
adshaft
4] to the
haft and
low.
g driver.
e pump
r
emi-
ers
0.38 mm
0.015 in.)
0.76 mm
0.030 in.)
lic thrust
ensated
or each
shaft
Please
he pump
he
nt
h face of
n nut
0.30 0
(0 .012)
0 0.35
(0 .014)
0 0.40
(0 .016)
0 0.53
(0 .020)
erve.com