Hoshizaki EF1A-FS, Service Manual

Page: 10 / 32

10
II. Sequence of Operation and Service Diagnosis
A. Sequence Flow Chart
1. Cooler ER1A-FS, ER2A-FS
C
yc
le
St
ep
s
Sli
ght
Del
ay
a
t
3.
Start
up/Coo
l D
ow
n
2. Cool D
ow
n Achie
ved
3.
C
ool D
ow
n
Re
st
ar
t
4.
D
efro
st
p
utr
at
S
Fa
ct
or
y
de
faul
t
C
Th
w
arm
s
to 6°F
(-
14
°C
)
abo
ve
setpo
in
t
Po
w
er O
n
C
Th
in
c
on
tro
l
3-min. Co
m
p
on
timer starts
33°
F
(0.5°C
)
3-min. Comp
o
ff
tim
er
s
ta
rts
Ev
apFM
ener
gi
ze
d
Comp
ener
gi
zed
C
onFM
energ
ized
Ev
apFM
ener
gi
ze
d
Ev
apFM
de-ener
gized
Comp
de-e
ne
rgiz
ed
C
onFM
de-en
ergiz
ed
Ev
apFM
ener
gized
Comp
de-e
ne
rgiz
ed
C
onFM
de-en
ergiz
ed
Comp
ener
gi
zed
C
onFM
energ
ized
Ev
apFM
ener
gi
ze
d
Note
:
k)
EvapFM de-e
ne
rgizes
w
hen d
oor
is opened on.
l)
3-min
. minimum
Comp
on
timer
s
tar
ts
w
hen
C
omp
energi
ze
s.
m
)
3-min
. minimum
Comp
o
ff
timer
s
tar
ts
w
hen
C
omp
de-en
ergizes.
n)
25-min. maxim
um
defrost
time.
o)
Te
m
pera
tur
e
di
spla
yed
is
fr
oz
en
d
ur
ing
def
ro
st.
Le
ge
nd
:
Com
p
-compr
essor
ConF
M
-cond
enser
fan
mo
to
r
CTh
-cabi
ne
t t
hermis
to
r
Ev
apF
M
-evaporator fan motor
25-min
. ma
xi
m
um
de
fros
t
4
hrs
Int
erva
l b
et
w
een
d
efr
os
ts
5. Def
rost
Te
rmination
Defrost terminat
ion
on
ly
by
maximum time prog
ramme
d
(25 min
.)