Hoshizaki HPR100A, Service Manual

Page: 14 / 66

14
2. Cabinet and Rail Cooling (continued)
4.
Cabinet Defr
ost
DTh in contr
ol
•
6‑
hour
DT
e
xpir
es
, then
r
esets
•
100
‑min
ut
e
defr
ost
ter
mination
timer
st
ar
ts
To 2 pr
evious page
P
o
w
er S
witc
h "ON," Rail Cooling S
witc
h "NORMAL" or "L
O
W" P
osition (contin
ued)
DTh r
eaches 49°F (9.4°C) or
100-min
ut
e defr
ost t
er
mination timer e
xpir
es or
DTst t
emper
atur
e r
eaches 1
20°F
±
5°F (49°C
±3
°C)
5.
Cabinet Cool Do
wn Defr
ost R
eco
ver
y
(defr
ost t
er
minat
ed)
Sta
g
e 1:
W
hen C
omp is of
f: 5-min
ut
e C
omp dela
y timer st
ar
ts
W
hen C
omp is on:
5-min
ut
e r
eco
ver
y dela
y timer st
ar
ts
, C
omp contin
ues (r
ail on)
Sta
g
e 2:
5-min
ut
e C
abFM and
PH dela
y timer st
ar
ts
Comp
ener
giz
ed
ConFM
ener
giz
ed
DH
ener
giz
ed
RailFM
ener
giz
ed
RLL
V
ener
giz
ed
CabFM
de-ener
giz
ed
CLL
V
de-ener
giz
ed
PH
de-ener
giz
ed
C on R on
C on R
of
f
C of
f
R on
Comp
ener
giz
ed
ConFM
ener
giz
ed
DH
ener
giz
ed
RailFM
ener
giz
ed
RLL
V
ener
giz
ed
CabFM
de-ener
giz
ed
CLL
V
de-ener
giz
ed
PH
de-ener
giz
ed
DH
ener
giz
ed
RailFM
ener
giz
ed
RLL
V
ener
giz
ed
CabFM
de-ener
giz
ed
CLL
V
de-ener
giz
ed
Comp
de-ener
giz
ed
ConFM
de-ener
giz
ed
PH
de-ener
giz
ed
C of
f
R
of
f
DH
ener
giz
ed
RailFM
ener
giz
ed
RLL
V
ener
giz
ed
CabFM
de-ener
giz
ed
CLL
V
de-ener
giz
ed
Comp
de-ener
giz
ed
ConFM
de-ener
giz
ed
PH
de-ener
giz
ed
To 5 belo
w
Comp
ener
giz
ed
ConFM
ener
giz
ed
RailFM
ener
giz
ed
RLL
V
ener
giz
ed
CabFM
de-ener
giz
ed
CLL
V
de-ener
giz
ed
DH
de-ener
giz
ed
PH
de-ener
giz
ed
C on R on
C on R
of
f
CLL
V
ener
giz
ed
RailFM
ener
giz
ed
CabFM
de-ener
giz
ed
Comp
de-ener
giz
ed
ConFM
de-ener
giz
ed
DH
de-ener
giz
ed
PH
de-ener
giz
ed
RLL
V
de-ener
giz
ed
Leg
end:
C
-cabinet cooling
CabFM
-cabinet f
an mot
or
Comp
-compr
essor
ConFM
-condenser f
an mot
or
CLL
V
-cabinet liquid line v
al
ve
CTh
-cabinet ther
mist
or
DH
-defr
ost heat
er
DT
-defr
ost timer
DTh
-defr
ost ther
mist
or
DTst
-defr
ost ther
most
at
PH
-per
imet
er heat
er
R
-r
ail cooling
RailFM
-r
ail f
an mot
or
RLL
V
-r
ail liquid line v
al
ve
CabFM
and
PH
ener
giz
e f
or 1
0 sec.
CLL
V
ener
giz
ed
Comp
ener
giz
ed
ConFM
ener
giz
ed
RailFM
ener
giz
ed
RLL
V
ener
giz
ed
C on R on
C on R
of
f
CabFM
and
PH
ener
giz
e f
or 1
0 sec.
CLL
V
ener
giz
ed
RailFM
ener
giz
ed
Comp
ener
giz
ed
ConFM
ener
giz
ed
RLL
V
de-ener
giz
ed
CabFM
ener
giz
ed
PH
ener
giz
ed
•
C
on
‑CTh
at
or
abo
ve
setpoint
•
C
of
f‑
CTh
has
r
eached
3.6°F
(2°C)
or
mor
e
belo
w
setpoint
•
R
on
‑R
Th
at
or
abo
ve
setpoint
•
R
of
f‑
R
Th
has
r
eached
3.6°F
(2°C)
or
mor
e
belo
w
setpoint
W
hen
in
the
"NORMAL"
position,
R
ailFM
oper
at
es
contin
uousl
y.
W
hen
in
the
"L
O
W"
position,
R
ailFM
oper
at
es
contin
uousl
y
when
r
ail
is
cooling
do
wn
and
int
er
mit
tentl
y
(per
F9
set
ting)
when
r
ail
cool
do
wn
is
achie
ved.
See
"II.D
.4.a)
S
witch
Set
tings"
and
"II.D
.5.
Ser
vice
Men
u."