Table of Contents
Advertisement
SERVICE
This section provides procedures for testing and
replacing various major components used in this dis-
penser should service become necessary. Refer to
Troubleshooting for assistance in determining the cause
of any problem.
Component Access
WARNING - Disconnect the dispenser from the power
source before the removal of any panel or the replace-
ment of any component.
!
C A
U nt
U T
il W
Tu
at er
rn
O n
IO
Ho
C om
N
Au
t W
Th
to m
at er
es
e Ta
at ica
Sy
Fr om
nk
Co
lly
st em
H ea
Ac
ffe
e Br
W he
s -
O pe
te r
co
rd an
n Un
W at
ne
Sw
Fa
ce
ew
er s
it Is
d Fa
itc h
ilu
W ith
- Fi
Co
er
Ta
uc et
re
ll Th
nn
nk
To
Th
e In
ec
W ill
!
C om
sta
e W
te d
Fi ll
pl y
lla tio
at er
To
Po
Vo
n In
Ta
we
id s
str
nk
In
r!
uc
W ar
tio
ns
ra nt
!
y!
W A
R N
IN G
H A
ZA
R D
V O
LT
O U
A G
S
D IS
E
Fi ll
!
W A
C O
wa
PO
N N
th er
te r
R N
BE
W ER
EC
to
m os
ta nk
FO
T FR
po
ta t
be
IN G
R E
SO
O M
Us
we
or
fo re
R EM
U R
e on
r so
co
O VI
C E
ci rc
ly
ur ce
nn
ec
tu rn
El ec
ui t
on
.
tin
in g
N G
ca
pa
a pr
g ap
-o n
!
Fo
tri ca
bl e
op
pl ia
llo
lly
of
er ly
nc
Do
w
gr ou
th e
pr ot
e
no
na
tio
nd
ra te
ec
t us
na
th e
d lo
te d
FA
e ne
l/l oc
IL UR
al
ch
as
ad
.
DA
E TO
ar
co
el ec
si s.
M AG
m bu
tri ca
CO
st ib
RE
E,
FI RE
M PL
l co
LIA
IN CL
AD
Y RI
le s.
de
BI LIT
TH
E EN
, OR
SK
s.
UD
IN G
SH
S EQ
Y BE
TI RE
OC
FO
TH
E LIM
OP
K HA
UI PM
TH
IS
RE
ER
EN
AP
BU
YI NG
IT
OF
AT
IN G
ZA
RD
T
CO
PL
W AR
NN
IA NC
OR
MA
008
31.0
EC
TE
E IS
US
RA
NU
AL
000
D TO
HE
IN G
NT
Y AN
5/88
A
AT
TH
©
198
A PO
ED
IS
PR
D
8
BUN
W ER
W HE
OD
N-O
SO
NE
UC
-MA
TIC
UR
VE
R
T
COR
POR
CE
ATI
ON
T hi
co
m pl
s eq
y w
ui pm
A dm
th e
ith
en
an
in is
B ui
th e
t is
of
d th
tr at
ld in
B as
to
th e
e F
g O
be
or s
ic
P lu
in st
F oo
oo
In te
ffi ci
d an
d S
rn at
al s
m bi
al le
er vi
an
ng
d to
d D
ce
io na
d C
C od
ru g
S an
l, In
A dm
od
e
e of
ita
c.
in is
tio
(B
O C
tr at
n M
an
A )
io n
ua
(F
l
D A
).
The check valve, electronic control assembly, safety
overflow switch, solenoid valve, overflow tube tem-
perature sensor and terminal block are located at the
rear of the dispenser. Access is gained by removing
the upper and lower rear panels. The upper is attached
with six 8-32 slotted-head screws. The lower is attached
with four 8-32 slotted-head screws. The middle panel
must not be removed from the dispenser.
!
C A
U nt
U T
il W
Tu
at er
rn
IO
O n
Ho
C om
Th
N
Au
to m
t W
es
e Ta
at ica
at er
Fr om
nk
Co
Sy
H ea
Ac
ffe
lly
W he
st em
O pe
co
e Br
s -
te r
rd an
ew
n Un
W at
ne
d Fa
Sw
Fa
ilu
ce
er s
it Is
er
itc h
re
W ith
- Fi
Co
Ta
nk
uc et
To
Th
ll Th
nn
ec
W ill
!
C om
e In
e W
te d
Fi ll
sta
at er
To
pl y
lla tio
Ta
Po
Vo
n In
nk
we
r!
id s
str
In
W ar
uc
tio
ra nt
ns
!
y!
W
The limit thermostat, liquid level probe, tank heater,
and temperature sensor are located at the top of the
dispenser. Access is gained by removing the top lid,
attached with three 4-40 slotted-head screws.
The triac assembly is located beneath the tank. Access
is gained by removing four feet and the bottom panel
attached with seven 8-32 slotted-head screws.
NOTE - Completely drain the tank before tipping the
dispenser.
WARNING - Inspection, testing, and repair of electrical
equipment should be performed only by qualified ser-
P1770
vice personnel. Disconnect the dispenser from the
power source when servicing, except when electrical
tests are required and the test procedure specifically
states to connect the dispenser to the power source.
Electronic Controls ............................................. 10
Limit Thermostat ................................................ 16
Safety Overflow Switch ....................................... 17
Solenoid Valve .................................................... 18
Tank Heater ........................................................ 19
Electronic Control Assembly Troubleshooting:
•
Is circuit board popped-out of bracket?
•
Is circuit board wet due to misaligned overflow
tube?
•
Is water in overflow cup activating float switch?
•
Is overflow cup not making good contact with tank?
•
Is dispenser being operated with panels removed?
P1770
9
!
C A
U nt
il W
U T
Tu
rn
at er
O n
IO
Ho
C om
N
Au
t W
Th
e Ta
to m
at er
es
at ica
Sy
Fr om
nk
Co
lly
st em
H ea
Ac
ffe
e Br
W he
s -
O pe
te r
co
rd an
ew
n Un
W at
ne
Sw
Fa
ce
er s
it Is
er
d Fa
itc h
ilu
W ith
- Fi
Co
Ta
uc et
re
ll Th
nn
nk
To
Th
e In
e W
ec
te d
W ill
!
C om
sta
To
Fi ll
pl y
lla tio
at er
Po
Vo
n In
Ta
nk
we
id s
str
In
r!
W ar
uc
tio
ns
ra nt
!
y!
W A
R N
IN G
H A
ZA
R D
V O
O U
LT
D IS
A G
S
E
Fi ll
!
W A
C O
wa
PO
N N
th er
te r
R N
BE
W ER
EC
to
m os
ta nk
IN G
FO
SO
T FR
po
ta t
be
R E
U R
O M
Us
we
or
fo re
R EM
e on
r so
co
O VI
C E
ci rc
ly
ur
ce
nn
ec
tu rn
El
ui t
on
.
tin
in g
N G
ec
ca
pa
a pr
g ap
-o
!
Fo
tri
ca
bl e
op
pl ia
n
llo
lly
of
er
ly
nc
Do
w
gr
th e
pr
e
no
na
tio
ou
nd
ra
ot ec
t us
na
th e
te d
te d
FA
e ne
l/l oc
ch
lo ad
IL UR
al
as
.
DA
E TO
ar
co
el ec
si s.
M AG
m bu
tri
CO
st ib
ca
RE
E,
FI RE
M PL
l co
LIA
IN
AD
Y RI
le s.
de
s.
BI LIT
CL
UD
TH
E EN
, OR
SK
IN
SH
S EQ
Y BE
G
TH
TI RE
OC
FO
E LIM
OP
K HA
UI
PM
TH
IS
RE
ER
EN
AP
BU
YI NG
IT
OF
AT
IN
ZA
RD
T
CO
PL
IA NC
W AR
G
NN
OR
MA
NU
008
31.0
EC
TE
E IS
US
RA
NT
AL
000
D
HE
IN
G
Y AN
A
5/88
TO
AT
TH
©
198
A PO
ED
IS
PR
D
8
BUN
W ER
W HE
OD
N-O
-MA
SO
NE
UC
TIC
UR
VE
R
T
COR
POR
CE
ATI
ON
T hi
co
m pl
s eq
y w
ui pm
A dm
th e
ith
en
an
in is
B ui
th e
t is
of
d th
tr at
ld in
B as
to
th e
e F
or s
g O
ic
be
P lu
in st
F oo
oo
In te
ffi ci
d an
d S
rn at
al s
m bi
al le
er vi
an
ng
d to
d D
ce
io na
d C
C od
ru g
S an
l, In
od
A dm
e
e of
ita
c.
in is
tio
(B
O C
tr at
n M
io n
an
A )
ua
(F
l
D A
).
Check these items first
P1770
10420 011599
Hide quick links:
Advertisement
Chapters
Table of Contents
