Installing a Purged Packed (PP) Inlet

Installing a Purged Packed (PP) Inlet
Installing a Purged
Packed (PP) Inlet
Agilent 6850 Gas Chromatograph
Accessory G2651A
These instructions are divided into two parts:
•
Part 1 to prepare the Electronic Pressure Control ("EPC") module
for later installation into the Agilent 6850 Gas Chromatograph
("GC")
•
Part 2 to perform the actual Accessory installation into the GC
Part 1: Preparation of the PP EPC module
Locate the following item found in your Accessory kit:
Cover Kit G2630-60081 consisting of:
Qty.
EPC cover
1
Hex nuts, 7/16-inch
2
Vent fitting
1
5/16-inch hex nuts
EPC module cover
EPC module vent fitting
Caution
2
Some of these assemblies contain printed circuit boards so standard ESD
precautions must be followed: use a static control wrist strap (supplied)
connected to a suitable ground in handling the assemblies.
The following tools are required for this assembly:
Tools Required
7/16-inch open end wrench or nut driver
Procedure
1.
Prepare a suitable clean, dry, static-free work area.
2.
Place the inlet system assembly such that its EPC module is centered in
your work area with its ribbon cable extending to the right.
3.
Remove any dust caps from gas connection fittings.
4.
Fold the cable back on itself and gently crease it about midway along its
length.
3
5.
4
Next, fold the cable back on itself again, but at an angle such that it now
extends at 90-degrees in the direction of the gas connection fitting.
Again, gently crease the cable at the fold.
6.
Next, install a vent fitting and secure it with a 7/16-inch wrench or nut
driver.
Vent fitting
Ribbon cable
(folded)
7.
Install the cover onto the two gas fittings making sure the ribbon cable
and its connector exit through the slot provided. Secure the cover using
7/16-inch hex nuts, one onto each fitting.
5
8.
Replace protective dust caps onto gas connection fittings to maintain
cleanliness.
This completes EPC module preparation for this Accessory.
6
Part 2: Installation of the PP Accessory
This kit contains:
Description
Quantity
Purged packed column inlet system
1
Top block insulation
1
Bottom block insulation
1
Insulation cup
1
Top cup insulation
1
Bottom cup insulation
1
Bottom cover plate
1
Screw, M4 x 8 mm, Torx T-20
2
Wrist strap, disposable, large
1
Installation sheet (this document)
1
The purged packed inlet and flow module are a factory-assembled and leaktested unit. Do not disassemble the unit during installation.
7
Insulation cup & insulation
Top block insulation
Flow module
Bottom block insulation
Capillary adapter
Screws
Heater/sensor cable
Bottom cover plate
Purged packed inlet
Inlet shipping kit, containing:
Inlet inserts
FID jet
Detector adapter
Inlet liner
Tools Required
Torx™ T-10 driver
Torx T-20 driver
Open end wrenches
Safety Information
Before continuing, read the safety information on your Agilent 6850 Gas
Chromatograph User Information CD-ROM.
8
WARNING
Before proceeding, turn off the oven and any heated zones and let them cool
down. Turn off all gases at their source, then turn off the main power switch
and unplug the power cord.
Remove the Lid Top Cover
Remove vent tubing,
if present
Lid top cover, without
valve box accessory
Remove T-20 Torx™
screws (8 places)
Remove detector
cover, if desired
Remove the Existing Inlet
Removing a Split/Splitless Inlet
1.
Open the lid. Disconnect the column from the inlet.
2.
Remove the insulation cup and insulation.
9
3.
Loosen the screws holding the connector cover plate next to the inlet
flow module.
Loosen
Disconnect
Remove
4.
Slide the plate off and disconnect the cable from the flow module.
5.
Disconnect the gas fitting on the back of the flow module.
6.
Remove the three screws on top of the flow module.
7.
Use the inlet wrench to release the large nut on top of the inlet.
Large nut
8.
Insert weldment
(includes nut)
If you do not have a gas or liquid sample valve—Remove the insert
weldment and the flow module.
If you do have a gas or liquid sample valve—The insert weldment is
part of the valve assembly. Move it out of the way. Disconnect the gang
block fitting, which is also part of the valve assembly, from the flow
module. Remove the flow module.
10
9.
Use forceps to remove the liner and O-ring.
10. Disconnect the split vent trap.
Disconnect
Top of liner
11. Trace the heater/sensor cable to the wiring harness connector.
Disconnect it.
12. Remove the three screws holding the inlet body.
13. Lift the inlet assembly out of the lid. Remove the insulation in the hole
under the inlet.
Removing a Purged Packed Inlet
1.
Open the lid. Disconnect the column from the inlet.
2.
Remove the insulation cup and insulation. Remove the bottom cover
plate.
3.
Close the lid.
11
4.
Loosen the screws holding the connector cover plate next to the inlet
flow module.
Disconnect
Loosen
Remove
5.
Slide the cover plate off and disconnect the cable from the flow module.
6.
Disconnect the gas fitting on the rear of the flow module.
7.
Remove the three screws on top of the flow module.
8.
Trace the heater/sensor cable from the inlet to the wiring harness
connector. Disconnect it.
9.
Remove the three screws holding the inlet.
10. Lift the inlet and flow module out of the lid. Remove the insulation in
the hole under the inlet.
Installing the Purged Packed Inlet
12
1.
Place the bottom block insulation in the inlet hole.
2.
Place the top block insulation in the hole. Align the long sides of the hole
parallel to the sides of the lid.
3.
Place the flow module in position. Secure it with three screws.
4.
Lower the inlet into the block insulation. Secure the inlet with three
screws.
5.
Plug the flow module cable into its connector. Replace the connector
cover plate and tighten the screws.
6.
Connect the carrier supply line to the back of the flow module.
7.
Connect the heater/sensor cable to the wiring harness.
Finishing Up
1.
Discard the center plug in the bottom block insulation. Inside the oven,
push the remaining ring over the bottom of the inlet. Force it up until
the bottom cover plate can rest flush with the oven top. Secure the cover
plate with two screws.
2.
Install the cup insulation and the cup. Restore the column connection.
3.
Restore carrier and other gases to the instrument.
4.
Restore power.
5.
Apply your normal operating pressures. Leak-check the flow module,
back panel, and column fittings.
13
© Agilent Technologies, Inc. 2007
All Rights Reserved. Reproduction, adaptation, or translation without
permission is prohibited, except as allowed under the copyright laws.
Part number G2652-90108
First Edition, May 2004
Second Edition, March 2007
Replaces part numbers G2651-90107
Printed in USA
Agilent Technologies, Inc.
2850 Centerville Road
Wilmington, DE 19808-1610
Acknowledgements
Torx® is a U.S. registered trademark of Textron, Inc.
Safety Symbols
Warnings in the manual or on the instrument must be observed during
all phases of operation, service, and repair of this instrument. Failure to
comply with these precautions violates safety standards of design and
the intended use of the instrument. Agilent Technologies assumes no
liability for the customer’s failure to comply with these requirements.
In the manual
A warning calls attention to a condition or possible situation that could
cause injury to the user.
A caution calls attention to a condition or possible situation that could
damage or destroy the product or the user’s work.
On the instrument
See accompanying instructions for more
information.
Indicates explosion hazard.
Indicates a hot surface.
Indicates radioactivity hazard.
Indicates hazardous voltages.
Indicates electrostatic discharge hazard.
Indicates earth (ground) terminal.
Pinch hazard.
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