58/61
Connection
to
liquid
piping
This
piping
must
be
welded
into
the
main
liquid
pipes
from
underneath.
The
liquid
solenoid
valve
must
be
positioned
as
close
as
possible
to
the
cooler
whilst
avoiding
placing
it
in
the
water
stream
during
defrosting.
Connection
of
defrosting
water
This
must
be
installed
with
a
siphon
to
the
outside.
A
heated
flex
must
be
provided
on
negative
temperature
units.
Selection
of
thermostatic
expansion
valve
The
coolers
are
fitted
with
diaphragm
distributors.
The
loss
of
charge
to
be
taken
into
account,
including
wires,
is
2
bars.
The
expansion
valves
must
be
exclusively
external
balancing
for
all
models
fitted
with
a
distributor.
The
external
balancing
piping
must
be
connected
approximately
10
cm
after
the
bulb.
When
a
MOP
expansion
valve
is
used,
its
MOP
point
must
be
at
least
10K
greater
than
the
set
point
temperature
for
the
chamber.
In
cases
of
sub-cooled
liquid
supply
(twin-stage
compressors
or
booster
unit),
it
is
essential
that
this
parameter
be
taken
into
account
(temperature
of
liquid
~
0°C)
when
selecting
the
expansion
valve.
The
risks
run
if
this
is
not
the
case
are:
Expansion
valve
hunting
(oversizing),
Hydraulic
hammering.
This
remark
also
applies
to
the
solenoid
valve
which
must
be
systematically
mounted
with
a
thermostatic
expansion
valve.
ELECTRICAL
CONNECTIONS
General
information
The
machine
is
designed
in
accordance
with
EN60204-1.
All
cabling
on
site
must
conform
to
the
legal
standards
in
force
in
the
relevant
countries
and
to
EN60204-1.
Electrical
motor
wiring
In
all
cases
the
instructions
shown
on
the
cooler’s
connection
box
must
be
adhered
to.
COOLER
C/CD/CB
CAN/E/B
400
CAN/E
500
CAB
500
CRM/CBM
CR/CB
MI/MIE/MIB
POWER
TRI
400V/50Hz
TRI
400V/50Hz
TRI
400V/50Hz
TRI
400V/50Hz
TRI
400V/50Hz
Connection
DELTA
DELTA
DELTA
STAR
DELTA
Range
of
usage
-40
to
+50°C -40
to
+50°C -40
to
+50°C -40
to
+50°C
-40
to
+50°C
Hygrometry
60%
to
98%
60%
to
98%
60%
to
98%
60%
to
98%
60%
to
98%
Protection
Factor
IP
55
IP
55
IP
55
IP
55
IP
55
Insulation
class
F
F
F
F
F
COOLER
BP
BN
CAN/CAB
300
POWER
MONO
230V/50H
z
MONO
230V/50H
z
MONO
230V/50Hz
Connection
Range
of
usage
-10
to
+60°C
-30
to
+60°C
-30
to
+60°C
Hygrometry
60%
to
98%
60%
to
98%
60%
to
98%
Protection
Factor
IP
41
IP
41
IP
42
Insulation
class
B
B
B
The
standard
three
phase
motors
are
high-resistant
(excepted
CAB500
motors)
The
protection
factors
are
given
with
purge
holes
closed
(CEI
34-5).
Important:
the
maximum
imbalance
between
phases
is
2%
in
voltage
and
10%
in
current
per
motor.
Electrical
defrosting
for
models
BPE/BN
-
CE/CB/CAE/
CRE/CBM/MIE/MIB
The
defrosting
heaters
are
elements
which
should
be
powered
at
230V
between
live
and
neutral.
For
use
in
chambers
at
0°C,
the
coil
must
be
defrosted
electrically.
For
use
below
0°C,
heaters
must
be
included
in
the
defrost
tray.
The
defrost
heaters
are
fitted
inside
copper
sleeves
and
the
ends
closed
by
two
clips.
