Bell & Gossett 176R0649C Technologic 502 Series Pump Controller - Manual (Page 61)

61
Table 9-1. Fault T
able (continued)
Sy
m
pto
m
Po
ssi
bl
e
cau
se
Test
So
lu
tio
n
Mot
or
ov
er
lo
ade
d
Mot
or
is
dr
aw
ing
too
m
uc
h
cur
rent
for
the
app
lic
at
ion
.
Per
for
m
s
tar
tup
an
d
ver
ify
m
ot
or
c
ur
rent
is
w
ith
in
spec
ifi
cat
io
ns
.
If
not
, r
educ
e
the
lo
ad
on
the
m
ot
or
.
Loos
e
co
nnec
tions
Look
for
s
igns
of
ov
er
he
at
ing
on
conn
ec
tio
ns
to
O
L.
Per
for
m
pr
e-
st
ar
tup
chec
k
for
loos
e
conn
ec
tio
ns
an
d
tigh
ten.
R
epl
ac
e
an
y
ov
er
heat
ed
com
ponent
s
and
w
ires
.
O
ver
lo
ad
trip
s
O
L n
ot s
et c
or
re
ctl
y
An
im
pr
oper
ly
s
et
O
L
can
caus
e
th
e
O
L
to
tri
p
to
o
soo
n.
S
ee
pr
e-
st
ar
tup
pr
oc
edur
e
for
c
or
rec
t s
et
tin
g.
Set
c
or
rec
t m
ot
or
c
ur
rent
o
n
O
L.
C
ont
am
inat
ion
R
em
ov
e
cont
ac
tor
and
c
he
ck
for
c
ont
am
in
at
io
n.
If
cont
am
inat
ion
fou
nd,
re
pai
r or
rep
lac
e.
D
ef
ec
tiv
e
coi
l
C
om
par
e
coi
l r
es
is
tanc
e
to
func
tiona
l c
ont
ac
tor
s
of
the
sa
m
e
si
ze.
I
ns
pec
t c
oi
l f
or
s
igns
of
ov
er
he
at
ing
and
dam
age
s.
If
readi
ngs
ar
e
not
th
e
sam
e
or
v
is
ib
le
s
igns
of
dam
age,
repl
ac
e
coi
l or
c
ont
ac
tor
.
C
ont
ac
tor
fa
ils
to
p
ul
l i
n
Aux
ili
ar
y
con
tac
t
bi
ndi
ng
ac
tion
R
em
ov
e
aux
ili
ar
y
co
nt
ac
ts
and
tes
t c
ont
ac
tor
ac
tion.
If
cont
ac
tor
oper
at
es
w
ith
aux
iliar
ies
rem
ov
ed,
rep
lac
e
aux
iliar
y
cont
ac
ts
.
C
ont
am
inat
ion
R
em
ov
e
cont
ac
tor
and
c
he
ck
for
c
ont
am
inat
io
n.
If
cont
am
inat
ion
fou
nd,
re
pai
r or
rep
lac
e.
D
ef
ec
tiv
e
coi
l
C
om
par
e
coi
l r
es
is
tanc
e
to
func
tiona
l c
ont
ac
tor
s
of
the
sa
m
e
si
ze
.
If
readi
ngs
ar
e
not
th
e
sam
e
or
v
is
ib
le
s
igns
of
dam
age,
repl
ac
e
coi
l or
c
ont
ac
tor
.
C
ont
ac
tor
fai
ls
to
dr
op
out
Aux
ili
ar
y
con
tac
t
bi
ndi
ng
ac
tion
R
em
ov
e
aux
ili
ar
y
co
nt
ac
ts
and
tes
t c
ont
ac
tor
ac
tion.
If
cont
ac
tor
oper
at
es
w
ith
aux
iliar
ies
rem
ov
ed,
rep
lac
e
aux
iliar
y
cont
ac
ts
.
Pr
ob
lem
w
ith
m
ai
ns
po
w
er
R
ot
at
e
inc
om
ing
po
w
er
le
ads
int
o
op
tio
n
pane
l o
ne
po
si
tio
n;
A
to
B
, B
to
C
, a
nd
C
to
A
.
If
im
bal
anc
ed
leg
fol
lo
w
s
th
e
w
ire
it
is
a
po
w
er
pr
ob
lem
.
C
aus
es
c
an
var
y
cont
ac
t e
lec
tri
ci
an
or
po
w
er
ex
per
t f
or
sol
ut
ion.
Mai
ns
c
ur
rent
im
bal
anc
e
gr
eat
er
than
3%
Pr
ob
lem
w
ith
opt
ion
pane
l
R
ot
at
e
inc
om
ing
po
w
er
le
ads
int
o
op
tio
n
pane
l o
ne
po
si
tio
n;
A
to
B
, B
to
C
, a
nd
C
to
A
.
If
im
bal
anc
e
le
g
st
ay
s
on
sam
e
opt
ion
pa
nel
in
put
ter
m
inal
it
is
a
pr
ob
lem
w
ith
the
opt
ion
pane
l.
C
ont
ac
t f
ac
tor
y
for
as
si
st
anc
e.
Pr
ob
lem
w
ith
m
ot
or
or
m
ot
or
w
iri
ng
R
ot
at
e
ou
t go
in
g
m
ot
or
lea
ds
one
po
si
tio
n; U
to
V
, V
to
W
,
and
W
to
U
.
If
im
bal
anc
ed
leg
fol
lo
w
s
m
ot
or
lead
the
pr
ob
lem
is
in
the
m
ot
or
or
w
iri
ng
to
th
e
m
ot
or
.
C
aus
es
c
an
var
y
co
nt
ac
t
el
ec
tri
ci
an
or
m
ot
or
ex
per
t f
or
a
sol
ut
ion.
Mot
or
c
ur
ren
t
im
bal
anc
e
gr
eat
er
than
3%
Pr
ob
lem
w
ith
opt
ion
pane
l
R
ot
at
e
ou
t go
in
g
m
ot
or
lea
ds
one
p
os
iti
on
; U
to
V
, V
to
W
,
and
W
to
U
.
If
im
bal
anc
e
le
g
st
ay
s
on
sam
e
opt
ion
pa
nel
out
put
ter
m
inal
it
is
a
pr
ob
lem
w
ith
the
opt
ion
pan
el
.
C
ont
ac
t
fac
tor
y
for
as
si
st
anc
e.