Chapter:
Topic:
INSTALLATION
Interfacing The Liquid Autosampling Carousel
The procedure for installation of the autosampling carousel is simple and straight-forward.
Pneumatic and electrical connections must
be
made
at the controller
unit
and at thedata system
interface board
(if
in use by the system).
Once
these connections have been made, the autosampler is
inspected
for
proper docking height with the chromatograph injection
port.
If
the autosampler is
intended
for
use with an early version of the model 8610 chromatograph (low-profile chassis with an
injection
port
6.5" above the countertop), the carousel
will
be
equipped
with three rubber feet that
elevate the injection needle axis to exactly
6.5".
Current production models are mounted on a
platform that elevates the injection
need1e
axis to exactly 10". This corresponds to the injection
port
height of the current production model 8610 chromatograph. When proper unit height has been
verified at the injection
port,
the autosampler is mated to the chromatograph and operation may begin.
PNEUMATIC CONNECTIONS
Poeumatic
hose
terminal
@o
@O,_-:.Color-<Oded
-
@O
@O
Bluehosemust be
connected
via
a
gas
pressure
nogulator
(also
provided),
set
to
6Opsi,
to
theuay
rotationgas
supply
(also
typically
air).
O@
O@
O@
O@
Eachhose
conoector
is
......pmiedby
acolor
dot
that
specifies
»Ilich
hose
10
c:oooect
White
hose
must
be
camected
via
a
gas
pressure
.."wator
(provided), ...
10 ISps;, 10
the
aurosampler
vial
pressurizalion
gas supply
(typ;caIly
air).
If
air
is
used
by
both
reguIa1ors.
themain
air
supply
pressure
should
be
regulated
10
(ot
I"",)
7Spsi
in
order
tomaintain a
stable
gas
supply.
Terminal block 1
123456 78
In addition to connecting the six
color-coded hoses from the autosampler control
harness to their respective pneumatic terminals on
the rear of the autosampler controller unit,
two
gas connections must bemade at the lower
two
pneumatic
hose
terminals on the bulkhead. The
white hose provided must be connected to the
autosampler vial pressurization
gas
supply, using
the
provided regulator. This regulator should be
set to
15
psi.
Gas
(typically
air
or nitrogen) is
injected into the
vial
by the outer sleeve of
the
concentric sampling needle (needle within a
needle), forcing sample to flow out of the
vial
through
the center needle
and
into
the
injection
syringe. The blue hose should be connected to the
tray rotation gas supply, set to 60psi with the
other regulator provided with the
unit,
This gas
enables the
tray
mechanism
to
rotate, advance the
samples and operate the injection mechanism.
botweonlf1md#8
(9
~
- I
(9
~~~~~
~I~
lack
jumper
wire
connected
l=
B
Purple
wire
Terminal block 2
tointerface
1 2 3 4 5 6 7 8
~~~~~~~
;;;::::;;;:~=:V
-
Black
wire
to interface
board
D.GND
terminal
ELECTRICAL CONNECTIONS
There are only
three
connections to be
made
by
the user. A black jumper wire
(provided)
must be
connected
between terminals 7
and 8of terminal block
I.
The purple
and
black
wires
(also
provided) must be connected to the
interface
board
terminals
labeled RELAYA and
D.GND, respectively. These two wires provide
the remote activation of the autosampler advance
and sample circuitry (same as INJECT on the
controller
unit)
by the
data
systemor other
remote device.
