Manual
COMPACT
7
‐
225
Revision
4
F.2b
(ENG)
INSTALLATION
AND
OPERATION
WIRING
All
electrical
wiring
must
comply
with
local
and
national
codes.
Connecting
terminals
are
located
in
the
control
panel
for
the
COM
90
and
larger.
The
nameplate
on
the
Dryer
identifies
the
voltage
requirements.
CAUTION
:
The
unit
should
only
be
connected
to
the
voltage
and
frequency
specified
on
the
nameplate.
A
suitable
fused
disconnect
switch
in
accordance
with
local
and
national
code
requirements
is
recommended.
Refer
to
the
table
for
full
load
amp
requirements
of
units.
From
COM
90
through
225,
a
control
transformer
is
fitted
in
the
control
box
to
transform
down
to
24V.
IMPORTANT
!
OUTDOOR
INSTALLATIONS
When
installation
must
be
made
outdoors
a
weatherproof
COM
Refrigerated
Air
Dryer
should
be
utilized.
Special
precautions
against
condensate
freezing
are
necessary
if
the
ambient
temperature
is
likely
to
fall
below
0°C.
Contact
M.C.I.B.
for
your
local
M.C.I.B.
representative
if
this
is
the
case.
START
UP
Use
the
procedure
mentioned
below
to
start
the
compressed
air
system
for
the
first
time:
1.
Check
that
the
site
conditions
correspond
to
those
for
which
the
dryer
was
ordered
/
selected,
i.e.
voltage,
pressure,
ambient
temperature,
inlet
temperature,
etc.
2.
Ensure
that
the
location
and
pipe
work
is
suitable,
as
per
the
installation
and
operators
manual.
Ensure
that
the
compressed
air
inlet
piping
is
connected
to
the
Dryer’s
air
inlet
and
the
compressed
air
outlet
piping
is
connected
to
the
Dryer’s
air
outlet.
3.
Check
that
the
primary
voltage
is
correctly
set
at
the
control
transformer.
The
transformer
is
factory
set
at
400V
Figure
F.3
‐
1
4.
Should
the
air
compressor
be
designed
in
such
a
way
that
the
ventilation
air
from
the
dryer
is
blown
towards
the
compressor,
we
advise
swapping
over
the
positionof
the
side
panels
(only
possible
with
models
COM
20
to
COM
65)
5.
Switch
on
the
mains
isolator
(customer
supply).
For
COM
90
and
above,
do
not
switch
the
dryer
on
before
allowing
the
crankcase
heater
to
warm
up
for
at
least
12
hours
prior
to
normal
operation.
NOTE:
Failure
to
comply
with
this
procedure
may
result
in
damage
to
the
compressor
unit.
6.
Switch
the
dryer
on
with
both
air
service
valves
closed,
i.e.
no
air
flow
through
the
dryer
and
check
the
rotation
direction
of
the
fan
motor.
If
the
rotation
is
otherwise
than
mentioned,
reverse
the
rotation.
NOTE:
on
water
‐
cooled
condensers
check
the
required
water
flow
and
water
quality.
7.
Open
the
inlet
valve
so
the
dryer
pressurizes
slowly.
Open
the
inlet
valve
completely
when
the
dryer
is
totally
pressurized.
Load
the
dryer
about
five
minutes
later
by
opening
the
air
outlet
valve.
8.
The
dryer
is
now
operational
on
line.
SHUT
‐
DOWN
Close
the
compressed
air
outlet
valve
and
allow
to
stabilize
by
running
for
1
or
2
minutes.
Switch
off
the
dryer
by
means
of
the
on
‐
off
switch.
The
dryer
will
stop.
The
power
supply
of
the
dryer
is
only
to
be
disconnected
for
maintenance
or
when
the
system
is
put
out
of
operation
for
a
long
time.
Wait
a
minimum
of
10
minutes
before
switching
on
the
dryer
again.
Figure
F2
Control
Transformer
50
VA
Maximum
allowable
voltage
variation
is
+
10%
and
‐
10%
from
rated
nameplate
voltage.
Variation
beyond
these
limits
may
result
in
motor
damage.
!
