Roberts Gorden UltraVac NEMA 4 - Manual (Page 44)

ROBERTS GORDON ® ULTRAVAC™ C ONTROLLER I NSTALLATION M ANUAL
38
Troubleshooting Flow Chart (continued)
R
eplace r
o
ta
ry
disconnect
b
ase
b
loc
k.
Is ther
e po
w
er (1
20
V
or
230
V
)
b
et
w
een the r
o
ta
ry
disconnect o
u
tp
u
ts?
T
u
rn
r
o
ta
ry
disconnect
sw
itch t
o
the O
N
position.
See Section 6.1
.
Chec
k cir
c
u
it
b
reak
er and
po
w
er s
u
ppl
y.
Mot
or
b
ear
ings ma
y ha
ve
failed.
R
epace mot
or
.
N
o
Is the p
u
mp impeller
o
b
str
u
ct
ed?
N
o
Disconnect po
w
er t
o
the
mot
o
r.
Does the mot
or
shaf
t t
u
rn
fr
eel
y
?
Mot
or ma
y ha
ve tr
ipped
o
ver
load.
W
ait 1
0-1
5
min
u
tes and r
eset.
N
o
Ye
s
Is the p
u
mp mot
or hot?
R
ectify
w
ir
ing
b
et
w
een
V
FD and p
u
mp
.
Ye
s
N
o
Is ther
e po
w
er
b
et
w
een an
y
tw
o inp
u
t
w
ir
es at the
p
u
mp?
R
eplace
V
FD
. See
R
eplacement P
a
rt
s
section.
Ye
s
N
o
Is ther
e
1
2
0
V
(230
V
f
or
460
V
models)
b
et
w
een an
y
tw
o o
u
tp
u
t (mot
or) t
e
rminals
(U
,V
or
W
)?
R
e
fer t
o
the
V
FD
man
u
fact
u
re
r'
s Inst
allation
and Oper
ation Man
u
al t
o
clear err
o
r.
R
eplace
V
FD
. See
R
eplacement P
a
rts
section.
R
ectify
w
ir
ing
b
et
w
een f
u
se
holder o
u
tp
u
ts and
V
FD
po
w
er inp
u
ts L1 and L2/
N
R
eplace f
u
se
. See
R
eplacement P
a
rts
section.
Is ther
e po
w
er (1
20
V
or
230
V
)
b
et
w
een the r
o
ta
ry
disconnect inp
u
ts?
N
o
N
o
N
o
Ye
s
Ye
s
Ye
s
Is ther
e
po
w
er (1
20
V
or
230
V
)
b
et
w
een f
u
se
holder inp
u
ts?
N
o
Ye
s
Is ther
e
po
w
er (1
20
V
or
230
V
)
b
et
w
een f
u
se
holder o
u
tp
u
ts?
N
o
Ye
s
Is ther
e
po
w
er (1
20
V
or
230
V
)
b
et
w
een L1 and
L2/
N
inp
u
ts on the
V
FD?
N
o
Ye
s
Is the LCD displa
y
of the
V
FD on?
R
ectify
w
ir
ing
b
et
w
een
1
20
V
r
ela
y and
V
FD
te
rm
inals 1 and 1
1.
N
o
Ye
s
Is ther
e contin
u
it
y
b
et
w
een
V
FD t
e
rminals 1 and 1
1
?
N
o
Ye
s
Is ther
e
an err
or sho
w
ing
on the LED displa
y?
R
eplace 1
2
0
V
r
ela
y.
See R
eplacement P
a
rts
section.
N
o
Ye
s
Is ther
e contin
u
it
y
b
et
w
een
o
u
tp
u
t t
e
rminals on 1
20
V
re
la
y.
R
ectify
w
ir
ing
b
et
w
een
contr
o
ller and 1
2
0
V
re
la
y.
N
o
Ye
s
Is ther
e
1
20
V
int
o
1
2
0
V
rela
y in the
var
ia
b
le
fr
e
qu
enc
y dr
iv
e assem
b
ly
.
R
eplace pl
u
g-in r
ela
y or
rela
y
b
oar
d.
See
R
eplacement P
a
rts section.
N
o
Ye
s
Is ther
e 1
20
V
at o
u
tp
u
t #
8
on the r
ela
y
b
oar
d
?
R
eplace pl
u
g-in r
e
la
y.
See R
eplacement P
a
rts
section.
Sec
u
re
w
ir
ing
b
et
w
een 24
V
O
u
tp
u
t #
8
on contr
ol
b
oar
d
and 24
V
inp
u
t connection
#
8
on r
e
la
y
b
oar
d.
Ye
s
N
o
Is ther
e 24
V
ac acr
oss 24
V
inp
u
t connection #
8
on the
rela
y
b
oar
d?
N
o
V
er
ify e
x
te
rnal
w
ir
ing
diag
rams
, Does the p
u
mp
tu
rn
on?
Ye
s
N
o
Is the r
ed LED on pl
u
g-in
re
la
y #
8
on the r
e
la
y
b
oar
d
lit?
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s