Xylem FLYGT 3171 - Troubleshooting; Pump Start-up and Operation Faults

Troubleshooting
Troubleshooting
lntroduction
DANGER:
Electrical
Hazard
Troubleshooting
a live control
trou bleshooting
must be done
panel
exposes
personnel to hazardous
voltages.
Electrical
by a
quali{ied
electricia
n.
The
pump
Follow these
guidelines
when troubleshooting:
.
Disconnect and
lock out
the
power
supply
except
when conducting
checks
that
require voltage.
.
Make sure that
no one
is near the
pump when the
power supply
is reconnected.
.
When troubleshooting
electrical equipment,
use
the
following:
.
Universal
instrument
m
ultimeter
.
Test
lamp
(continuity
tester)
.
wiring diagram
does
not
start
DANGER:
Crush
Hazard
Moving
parts
can
entangle
or crush.
A.lways disconnea
and
lock out
power before
servicing
to
prevent
unexpected
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
An
alarm
signal
has been triggeled
on the
(ontrol
panel.
Checkthat;
.
Ihe impeller
rotates lreely.
.
The sensor
indicat0rs do
not
indicate
an
alarm.
.
The overload
protection is not tripped.
lfthe
problem
nill
persists:
Contact
the l0cal sales
and service
representative.
The
pump
does
not
starl
automati(ally,
but
(an
be
sla,led
manually.
Cherkthat:
.
Tle start
level
regulator is fundioning.
Clean or
teplate
il necessary.
.
Allconnections
aIe
intact.
.
The
relay
and
contactol coils
aIe
inlacl.
.
The ronlrol switch
{Man/Auto)
makes
c0ntact
in
both
Positions
Checkthe control circuit and
functions.
Flygt 3171
lnstallation,
Operation,
and
Maintenance
Manual
59