Agilent Technologies G4315A User manual

Agilent Technologies
Valve Box and Valve
Accessories G4315A, G4316A, G4317A
Installation Guide
The G4315A, G4316A, and G4317A accessories consist of
separate kits depending on the custom configuration ordered.
These kits may include one or more of the following:
•Heated valve box kit
•Valve hardware installation kit
•Valve(s)
Table 1 and Figure 1 list and show the contents of the heated
valve box kit.
Tab le 1 Heated valve box kit contents
Description
G4315A
G4316A G4317A
Screw, M4 x 12 mm, Torx T-20 2 2
Screw, M4, Torx T-20, chrome-plated 4 4
Nut plate 2 2
Valve box, 1 heated zone 1
Valve box, 2 heated zones 1
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2 Installation Guide: Valve Box and Valve
Figure 1 Heated valve box kit contents
Screws
Hex wrenches
Standoffs
Nut plates
Valve box with actuator(s)
Solenoid(s) with air tubes
Heater/sensor wiring
(1 or 2)
(G4316A)
NOTE The solenoids and valve actuators are assembled and tested at the factory.
Do not disassemble them or break any electrical or air connections.

Installation Guide: Valve Box and Valve 3
Table 2, Figure 2, and Figure 3 list and show the contents of the
valve hardware installation kits.
Tab le 2 Valve hardware installation kit contents
Description
Kit G2739A
(Liquid sample)
Kit G2740A
(Gas sample)
Metering valve 1/16-inch 1
Screw, M3 x 8 mm 2 1
Screw, M3 x 30 mm, chrome-plated 2 1
Label 1 1
Screw, thread-cutting 4
Screw, M4 x 12 mm, Torx™ T-20 4
Fitting, column bulkhead 1 4
Nut, 5/16-inch 1 4
Restrictor bracket 1
1/16-inch SS tube, 102 mm long 1 1
1/16-inch SS tube, 203 mm long 1
1/16-inch SS tube, 360 mm long 1 2
1/16-inch SS tube, 400 mm long 1 1
1/16-inch SS tube, 560 mm long 1 5
1/8-inch nut and ferrule set 1 1
Filter union, reducing 1
Reducer/restrictor, SS 1
Actuator limiter, 36 degrees 0 1

4 Installation Guide: Valve Box and Valve
Figure 2 Kit G2739A, liquid sample valve
Figure 3 Kit G2740A, gas sample valve
Tubing
Nut and ferrule set
Screws
Restrictor bracket
Metering valve
Nut
Tubing
Reducer/restrictor
Nut and ferrule set
Actuator
Screws
Filter
C
olumn bulkhead fittings
Nuts
limiter
union

Installation Guide: Valve Box and Valve 5
Tools needed
Torx T-10 and T-20 drivers
Flat blade screwdriver
Needle-nose pliers
3 mm hex key wrench

6 Installation Guide: Valve Box and Valve
Installing the Heated Valve Box
Install the valve box
1Install two chrome-plated screws about halfway into each of
the two nut plates as shown in Figure 4.
2Inside the oven, locate the pair of T–shaped cutouts on the
left wall and match them with the two tabs on the nut plate
(see Figure 5). Slide the tabs on the nut plate into the oven
cutouts so that the screws rest on the bottom of the T. Repeat
on the right side of the oven. Tighten the screws.
WARNING The oven, inlet, and detector may be very hot. Before proceeding,
turn off the oven and all other heated zones and let them cool down.
Harmful gases may be present. Hydrogen (if used) can present an
explosion hazard. Before proceeding, turn off all supply gases at
their sources.
Shock hazard. Before proceeding, turn off the GC and disconnect the
power cord.
Figure 4 Install the nut plate screws

Installation Guide: Valve Box and Valve 7
3Clip the notches holding the rectangular cover plate on top of
the oven with diagonal cutters (see Figure 6). Hold the
cutters with the flat face to the outside to remove as much of
the nibs as possible. Remove the plate.
Figure 5 Attach the nut plates

8 Installation Guide: Valve Box and Valve
4Install one screw where shown in Figure 6. Do not tighten.
5Place the valve box on the oven top and move it to the rear so
that it slides under the screw.
6Install another screw at the front of the box (see Figure 6).
Tighten both screws.
Figure 6 Valve box location
Install screw
Cover plate
(Step 4)
Install screw
(Step 6)

Installation Guide: Valve Box and Valve 9
Install and wire the solenoids
The internal valve wiring is located near the top center of the
main board. To access it, you must remove the right side panel.
1Attach the solenoid assembly to the main board.
2Place the tubing and cables in the slots in the chassis just
above the solenoids.
WARNING Removing the side panel exposes dangerous voltages. Turn the
instrument off and disconnect it from its power source before
proceeding.
Tab le 3 2×8 connector location
2×8connector

10 Installation Guide: Valve Box and Valve
3Uncoil the air supply tubing and pass it through the hole in
the back of the GC as shown in Figure 7.
Figure 7 Valve actuator air tubing
Valve air
supply tubing

Installation Guide: Valve Box and Valve 11
4Plug the heater/sensor cable(s) into connector A1 (Aux 1)
and/or connector A2 (Aux 2).
NOTE The connectors are prewired so that the Valve 1 driver controls the
solenoid closest to the front of the GC, Valve 2 controls the next one, etc.
If you ever need to remove a connector from the bracket, press the locking
tabs on the side and pull the connector down. To insert a connector, push
it up into a bracket hole until it locks.
A1 V1 V2 V3 V4 A2
To front of GC
2 x 8 connector on main board
Bracket with connectors
Air fittings to actuators
Solenoids (up to 4)

12 Installation Guide: Valve Box and Valve
Installing Valves In a Heated Valve Box
1Remove the heater block mounting screw in the lower valve
box.
2Place the valve in the desired position in the valve box. The
valve rotor index pin of a 6–port valve points toward the
back of the GC if installed correctly. This is the ON position.
Tighten the two screws with a Torx T-10 screwdriver. If this
is the last valve to be installed in the heated zone, make sure
the screws that secure the heater block to the lower valve box
are tight.
WARNING Do not install a liquid sampling valve (LSV) in the valve box if you
plan to heat the box above 75 °C. Heating an LSV over 75 °C can
cause a leak and subsequent explosion. Liquid sampling valves
should be mounted in the side location to avoid potential explosions.
Figure 8 Removing the heater block screw
Remove the screw in
the heater block at the
position where you
will install the valve.
Valve 4
Valve 3
Valve 2
Valve 1

Installation Guide: Valve Box and Valve 13
3Use needle-nosed pliers to move the valve rotor index pin of
the valve counterclockwise until the pin touches the valve
stop (OFF position).
4Use the tubing and fittings in the hardware installation kit to
plumb the valves. See “Common Valve Configurations" on
page 19.
Figure 9 Installing the valve
Figure 10 Index pin and stops
Tighten these screws
Valve stop OFF position
Valve rotor index pin

14 Installation Guide: Valve Box and Valve
Install the upper valve box
1Verify that all valve rotors are in the full counterclockwise
position.
2For each actuator, set the appropriate degree of rotation for
its valve by moving the pin to the required limiting hole (see
Figure 11):
•Four-port valves—place the pin in the 90° hole
•Six-port valves—place the pin in the 60° hole
•Ten-port valves—place the pin in the 60° hole with the
tubular 36° actuator limiter on the pin
3For each actuator, loosen the link arm lockscrew in the barrel
of the shaft that links the valve and actuator about 1/4 turn
(see Figure 12). You may have to apply significant pressure.
Figure 11 Setting the actuator’s degree of rotation
60°
90°
Pin

Installation Guide: Valve Box and Valve 15
4For each actuator, use a flat blade screwdriver to turn the
actuator coupling/shaft assembly counterclockwise until
snug.
5Locate the two half–moon cutouts at the bottom back of the
upper valve box. Place the upper box on top of the lower
valve assembly, routing the heater/sensor wires through the
cutouts. Secure with two T-20 Torx screws.
6For each actuator, push the coupling/shaft assembly
downward with a flat blade screwdriver until the slot on the
coupling engages the valve rotor index pin.
Figure 12 Loosening the lockscrew
Figure 13 Setting the coupling shaft
Hex key wrench
Turn counterclockwise

16 Installation Guide: Valve Box and Valve
7For each actuator, continue to turn the shaft
counterclockwise until snug, to ensure that the valve and
actuator are both in the OFF position.
8Tighten the link arm lockscrew firmly.
Plumb the actuators
Each valve actuator is driven by two tubes that connect to a
solenoid through two connectors on top. These connectors do
not require tools.
•To make a connection, push the tubing down into the
connector as far as it will go.
•To remove a tube from a solenoid connector, press down on
the plastic insert in the connector and pull the tubing
straight up.
NOTE If the coupling and valve do not engage, check that both are fully
counterclockwise and try again. If necessary, turn the shaft slightly to
engage the coupling.
Figure 14 Turning the valve off
Turn counterclockwise
NOTE The valve actuators are plumbed at the factory. This procedure is provided
in case you need to plumb the actuators in a manner other than the factory
configuration.

Installation Guide: Valve Box and Valve 17
Although the solenoids are controlled by Valve # 1 through 4 (if
you used the default wiring scheme), you can arrange your
valves in the valve box as you wish. Which driver controls which
valve depends entirely on how you choose to plumb the
actuators.
To val ve b ox
Top vie w
Air fittings to valve actuators
Solenoids (up to 4)
To front of GC

18 Installation Guide: Valve Box and Valve
Restore the GC to Operating Condition
1Reinstall any covers that were removed.
2Plug in the power cord and turn on the GC.
3Configure the valves. See the GC’s operating instructions if
you need help with this step.
4Connect the solenoid air supply line to a source of clean, dry
compressed air at 0.38 MPa (55 psi). High purity is not
required; a clean house air supply is adequate.
5Turn on the air supply to the solenoid valves.
6Use a flat head screwdriver to turn each valve ON and OFF.
Ensure that each valve is physically in the OFF position (full
counterclockwise).
7Use the 3-mm hex key wrench to tighten the link arm
lockscrew by rotating it clockwise until very tight.
NOTE If your detector also uses air, its operation may be affected by pulses in a
shared air line. The solenoid air supply should be separate from the
detector air supply.
Hex key wrench

Installation Guide: Valve Box and Valve 19
Common Valve Configurations
1The next several pages show some commonly used valve
configurations.
Figure 15 Valve configuration legend
Arrows indicate the
direction of flow.
Loops have a
specified volume
Jumper volume is
not specified.
Adjustable Restrictor valves
are used to adjust the pressure
drop (e.g., to balance flow)
Fixed (non-adjustable) restrictors
Union
Fitting
Column

20 Installation Guide: Valve Box and Valve
Valve plumbing tips
•Use bulkhead fittings with attached tubing for column
connections. Mount the fitting, pointing down, on the left or
right nut plate and secure with a retaining nut. Connect the
free end of the tubing to the valve.
•The best way to cut narrow tubing is with a tubing cutter
designed for this task. If some other cutter is used, check:
•The tubing bore is not restricted at the cut end
•The cut is at right angles to the tubing
•There are no burrs that might interfere with connections.
•Avoid kinks in the tubing.
Carrier
Column
or
2nd valve
Loop
In
Out
Sample
OFF
(Load)
ON
(Inject)
Gas sampling valve