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7.
INSTALLATION
/l
Before
installlng
or operating these dryers, make sure
that all
personnel have read and understood chapter 4
of this
l!}
manual.
7.1.
INSPECTION
lmmedialely afler
unpacking
the dryer, inspecl
il
for damage.
7.2.
POSTilONING
1
Th6 dryer is
supplied ready
for
operation.
The
controls
are set
al
levels
suitable
for
mosl
applications
and do not
require adjustment
expecl in case of
specmc
requirements.
2.
lnslall the dryer
in
a
well venlilated area where the ambi6nt air
is
dean
and free
trom flammable gas or solvenls.
3.
Minimum and maximum ambient temperatures are specitied
on
the data plate
of
the unit. Unless
olheMise
specified, dryers are normally designed to work besl at
an
ambiont
air
tempe,elwe
ol
25"C I
77"F. At
higher
temperatures,
the
capacily
of
the dryer reduces
and
this may cause an
incEase
in
the
doyu-point.
This is not usually
a prouem
if
the whole system
is
at
a
high ambient temperalure
but
al extremo temperalures and maximum airflow conditions the dryer may
be
ovedoaded to the
pdnt
at
which the
safety
devicos trip. ln some cases, it may b€ necessary
to
inslall fans or air extractors
in
the area to avoid heat build-ups
4.
The dryer may be
pled
on
any
suffciently
strong and
lewl
surface. Allow
a
free space
of
1
rletre
around
the
unit
for servicing access and
lo
ensure an
unr€stricld
flow
of
cool
air
lhrough the .efrig€ration condenser. Position the dryer
so
that cooling air cannot recirculate
in
the ventilation
inlet
grilles. Make
sure
thal the
drcr
is not
subiecl
to
warm
air
flo\fls from the air compressor, afrer-coolers or other pieces of equipment.
5
The
postion
of
the dryer
in
the compressed air system dep€nds
on the
way the air
is
used
(se6
installation diagram).
-
lnstall
the
dryer
doflnline from
the
recdver when
lhe
air
compressor operates inlermittently
and
lhe
maximum
total air
usage
does not
exceed
lhat of
the
compressor (this
is
the
most
frequent case).
-
lnstall
lhe
dryer
udine
from
the
receiver when the
recreiver is
designed
lo
cater for large fluc{ualions in air
usage
which can mean much higher inslantaneous air
flows lhan the maximum outpul
c,f
the @mpressor.
7.3.
PIPING
(see installalion diagram)
1.
Air inlet and outlel connedions are clearly marked
($2
)
Pipes and conneclions must
be of
the
crned
size and suitable
for
working prcssure.
Oo not
forg€l to
r€move
blanking
plugs
from the pipo
crnneciions
but
lake
care
to
prevent swarf, metal ,ilings, pieces
of
tape or other solid particles from entering the dryer during inslallation
as
these may
block tho
filter
or
the discharge
valve.
2.
All piping must
be
properly supported. Flexible conneclions are recommended
in
order to prevenl pip€ stress
or the
transmission
of
vibrations.
3
Conneci the condensate discharge pipe
lo
a
suitable point. The dryer discharga must not be connecled to those from any olher compressed air equipment; ideally
it
should discharge
into a
open funnel. Condensale drainage must never be piped
into
a common sewer drain
as it
may contain oil.
Oil ilater separdors
should bo used
to collec, discharged oil. Make
sure
that lho drainago system comdies with
locd
regulations.
4
A pre.filter should be installed upline from the
dry€r
togelher with
a
coalescence cil separator filter,
if
required
lnstall on-off valves
on
the compressed air
inlet
and outlet
in order
to isolate the dryer
if
necessary.
Fil
a
suitably sized safety valve upline from these valves.
5.
A bypass
line
with on-off valves should
be
installed
in
order to
alloi,
servicing to
be
canied
out
without interfering with the compressed
air
supply.
6
Piping or other
pa,b
with
a
temperature in
exce$
of
60'C (140'F)
and
which may
be
touched
by
personnel must
be
guarded or insulated.
7.
Take care when installing
the drye. in
arees subjecl
to
lo\,v
ambient temperalures. Take steps
to
pre\rent any discharged @ndensate from freezing in
the
dreinage
syslem. The minimum operaling
amtient
temperature
d
the dryer
ls
shown on the
data
table applied
on
the
unit.
L
To
enable comprcssed eir
to
be released
fiom the
dryer, betore mainlenance
work
is carried out, for example,
a
small relie{ valve should b€ litted
to the
air piping
between tho
dryer
and one
of the
two
on-off \ralves.
9.
Check
that the
inlet air
temperaturey'f,or
to
the dryer does nol exceed the
rated
values.
ln extreme
cases
the dryer
may
be overloaded
to
the
point at
which the safety devices
trip.
lnstall a suitable afier-cooler
if
necessary.
I
Reference
1
2
3
4
5
6
7
atr
@mpressor
after-cooler
condensate separator
compressed air recei\rer
pre-f lter
dryer
by-pass
Descriptlon
@
@
A)
B)
@
@
o
@
o
@
@
@
8
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