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- 7 -
T . F . 2 6 - 2 3
c i r c u i t
t e n d s
t o
i n d i c a t e
a g o o d t h e r m o s t a t
e l e c t r i c a l l y .
H o v t e v e r , a f t e r
a t t a c h i n g
o h m m e t e r
l e a d s
t o
t h e
t h e r m o s t a t
t e r m i n a l s ,
t h e
t e r m i n a L s
s h o u l d
b e m o v e d t o c h e c k f o r
i n t e r -
m i t t e n t
c o n t a c t .
I f
t h e c o n d i t i o n
o f
t h e t h e r m o s t a t
i s
q u e s t i o n a b l e ,
a f t e r
t e s t i n g ,
i t
s h o u l d b e r e p l a c e d .
I n
a d d i t i o n
t o
a c o n t i n u i t y
t e s t ,
t h e o p e r a t i n g
t e m p e r a t u r e
may have to be checked.
A temperature
test
can be made i.lith
a stem thermometer
in
the
lower
plug
hole
or
an oven thermometer
in
the
rear
exhaust
duct.
The temperature
will
vary
from
l5Oo to
ltOo
on cycles.
T h i s
w o u l d v e r i f y
t h e c y c l i n g
t h e r m o s t a t .
A f t e r
t h e
c y c l i n g
t h e r r o s t a t
i s
v e r i f i e d ,
t h e h i - l i n i t
thermostat
can be checked
in
the
same method by jumping
the
cycling
therrnstat.
Another
test
of
the hi-Iimit
therrnostat
is
to
run
the
unit
with
the
door
open and the door
switch
depressed.
If
the
h i - I i m i t
t h e r m o s t a t
c u t s
o u t
t h e h e a t
c i r c u i t ,
i t
i s
s e r v i n g
i t s
p u r p o s e .
Thermostats
are
subject
to
temperature
variance,
therefore,
a temperature
test
rnay be required
to
verify
normal
operation.
5.
Molded Fan Housing
S e c u r e d b y e i g h t
5 , / L 6 " h e x h e a d s c r e w s
l o c a t e d
o n t h e o u t s i d e
o f
t h e r e a r
p a n e l .
N O T E :
O n e h o l e
p l u g
w i l l
h a v e t o b e r e m o v e d
from
the
rear
ducF6
make one screvt accessible.
6 .
D r u m B e a r i n g s
This
section
covers
replacement
of
both
front
and rear
drum bearings
l o c a t e d
i n
t h e h e a t
s h r o u d a n d r e a r
d u c t ,
r e s p e c t i v e l y .
NOTE:
Lubrication
for
drum bearings
is
applied
to
the
drum
G - n g e s
b e f o r e
r e - i n s t a l l i n g
i t
i n t o
t h e
u n i t .
1.
Clean
aII
existing
grease
from
the
front
and rear
drum flanges.
2.
Clean
flanges
with
fine
grade
(250-400)
emery cloth
or
sandpaper
to
insure
they
are
free
of
foreign
matter,
then
wipe
clean.
3 .
B e s u r e
i n s i d e
o f
d r u m i s
c l e a n .
4.
Apply
a thin
coat
of
Silicone
Grease
(GE G-34I-M)
to
each drum
f l a n g e .
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