Xylem FLYGT 3171 - Performance and Flow Issues

Troubleshooting
Alwaysstatetheserialnumberofyourproduct,seeProductDescription(page11).
The
pump
runs
but
the
motor
protection
trips
DANGER:
Crush
Hazard
Moving
parts can
entangle
or crush.
Always
disconnect
and lock
out
power
before
serviciig
to
prevent une:xpected
startup.
Failure
to do so
could
result
in death
or serious
rnJUry.
NOTICE:
Do NOT
override
the
motor
protection
repeatedly
if it has triPped
Doing
so
may result
in
equipment
damage.
The
pump
Always
state
the serial
nu
mber
of
you r
product,
see
Product
DescriPtion
(Page
1 1
)'
delivers
too
little
or
no
water
DANGER:
Crush
Hazard
Movino oarts
can
entanqte
or
crush.
Always
disconnect
and
lock out
power before
r";i.i;;i"
pr"uun, ,n""*p".,ed
startuP.
Failure
to do so
could
result
in death
or serious
injury.
NOTICE:
Do
NOT override
the
motor
protection
repeatedly
if it
has tripped
Doing
so
may
result
in
equipment
damage.
Cause
Remedy
The motor
plote(tion is settoo
l0w. Srt
the
,.t0,
p,.tect,0t*cording
to the
data
plale
and
if applicable
the
cable
chart.
The
impeller
is difficult
to rotate
by
hand.
.
Clean
the
impeller,
.
Clean out
the sump.
.
Cherk
that
the
impellel
is
Properly
trim
med.
The drive
unit
is not
receiving
full
voltage on
allthree
phases.
.
Check
the
Iuses.
Replace
f uses that
have
tripped.
.
l{
the
f uses
are
intad, then
notity a
(ertif
ied electrician.
The
phase
currentsvary,
ortheYare
too
high.
Contact the
lo(al sales
and service
representative
The
insulation
between
the
Phases
and
ground
in
the
stator
is deledive.
i.
lse an
hse
an
insulation
tester.
Wilh
a 1000
V DC
megger,
chetk that
the
insulation
bet,{een
the
phases
and
between
any
phase and
ground
is
>
5 megaohms.
2.
lf the
insulation
is less,
then do
the
following;
Contact
the
local sales and
service
lepresentative.
The density
of the
pumped fluid
is too
hiqh.
L,!.ke s'*
that
tt'e
,"r-r,
density
is
1 100
kglm3
(9.2
lblUS
gal)
.
Change
the
impeller, or
.
Change
to
a more suitable
PumP
.
Contact
the
lo(al sales
and sen'ice
Iepresentative.
ihere
is a malfunction
in the overload
protedion.
Replace
the ovelload
Protection.
Cause
Remedy
The
impeller
rotates
in the
wrong
diredion.
[;1
;5
s
3.ph15s
pump, then
transpose
two
phase leads.
i{ it is a
'l'phase
pump, then do
the
following:
Contad
the local sales
and service
lepresentative
Flygt 3171
lnstallation,
Operation,
and
Maintenance
Manual
61