Agilent Technologies G2621-64000 Manual de usuario
Installation Guide
Flame Ionization Detector on a 6850 GC
Accessory G2621
Agilent Technologies, Inc.
2850 Centerville Road
Wilmington, DE 19808-1610
USA
© Agilent Technologies 2000
All Rights Reserved. Reproduction,
adaptation, or translation without
permission is prohibited, except as allowed
under the copyright laws.
Part number G2621-90107
First Edition, DEC 2000
Replaces Part No. G2621-90100 Operating
and Service Manual.
HP® is a registered trademark of
Hewlett-Packard Co.
Printed in USA
Safety Information
The Agilent Technologies Flame Ionization
Detector meets the following IEC
(International Electrotechnical Commission)
classifications: Safety Class 1, Transient
Overvoltage Category II, and Pollution
Degree 2.
This unit has been designed and tested in
accordance with recognized safety
standards and designed for use indoors. If
the instrument is used in a manner not
specified by the manufacturer, the
protection provided by the instrument may
be impaired. Whenever the safety protection
of the Agilent G2621 has been
compromised, disconnect the unit from all
power sources and secure the unit against
unintended operation.
Refer servicing to qualified service
personnel. Substituting parts or performing
any unauthorized modification to the
instrument may result in a safety hazard.
Disconnect the AC power cord before
removing covers. The customer should not
attempt to replace the battery or fuses in
this instrument.
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.
WARNING
A warning calls attention to a condition or
possible situation that could cause injury to
the user.
CAUTION
A caution calls attention to a condition or
possible situation that could damage or
destroy the product or the user’s work.
Sound Emission Certification for Federal
Republic of Germany
Sound pressure Lp < 68 dB(A)
During normal operation
At the operator position
According to ISO 7779 (Type Test)
Schallemission
Schalldruckpegel LP < 68 dB(A)
Am Arbeitsplatz
Normaler Betrieb
Nach DIN 45635 T. 19 (Typprüfung)
1
Copyright© 2000
Agilent Technologies
Printed in USA Dec 2000
Agilent Part No. G2621-90107
Installing a Flame Ionization Detector on an
Agilent 6850 Gas Chromatograph
This kit contains:
Kit G2621-64000 Qty.
Flame ionization detector system 1
Performance evaluation sample kit 1
Nut warmer cup assembly 1
Nut warmer insulation 1
Wrist strap, disposable, large 1
Screw, M4 x12 mm, pan head 3
Installation sheet (this document) 1
Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph
2
The FID detector assembly is a factory-assembled, tested, and calibrated
unit. Disassembly of the unit is not required for installation.
Tools Required
Safety Information
Before continuing, read the safety information on your Agilent 6850 Gas
Chromatograph User Information CD-ROM.
Torx™T-20 driver
Flat blade screwdriver
Open end wrenches
Nutwarmer
Insulation
Screws
Ribbon cable
Heater/sensor cable
FID assembly
Ignitor cable
Flow module cable
Flow module
FID signal board
(3 pieces)
Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph
3
Prepare for Installation
WARNING Hydrogen gas is flammable and potentially explosive. Before replacing the
manifold, turn off the hydrogen gas at the source.
WARNING Before proceeding, turn off the oven and any heated zones and let them cool
down. Turn off all detector gases at their supply, then turn off the main
power switch and unplug the power cord.
1. Open the lid. If a column is installed, disconnect it at the detector end.
Remove the nut warmer, insulation, and capillary adapter, if present.
Close the lid.
2. Turn all gases off at their sources. Disconnect the carrier and detector
gas tubing from the back panel of the instrument.
ToBase - T
ToBase - T
Local Talk
Local Talk
BNC
BNC
Disconnect gas supply tubing
from these fittings
Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph
4
Remove the Lid Top Cover
Remove the lid top cover.
Disconnect the Heater/Sensor Cable
1. Trace the detector heater/sensor cable to the wiring harness near the
injection part cooling fan.
2. Disconnect the cable at the connector.
Raise the Lid to the Service Position
1. Open the lid. Locate the counterbalance cam in the left rear corner
under the lid. Loosen the screw on the right side of the cam. This allows
the stop plate to drop down.
Lid top cover, without
valve box accessory
Remove T-20 Torx™
screws (8 places)
Remove detector
cover, if desired
Remove vent tubing,
if present
Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph
5
2. Raise the lid until it is stopped by the safety cable.
3. Raise the stop plate and tighten the screw to lock the lid in the upright
service position.
WARNING The lid is heavy. Always lock the lid when it is in the service position.
Stop plate
Screw
Counterbalance cam
Cam follower
Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph
6
Remove the Detector Electronics Cover
1. Loosen the two bottom screws on the detector electronics cover.
2. Remove the top screw on the cover.
3. Lift and remove the detector electronics cover.
Remove screw
Detector electronics cover
Loosen screws
Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph
7
4. Loosen the signal board clamp.
5. Unplug the signal board from the A/D converter board.
6. Disconnect the wiring from the signal board.
FID – Disconnect the ribbon cable. Unplug the ignitor cable. Pass both
cables through the hole to the top side of the lid.
The ribbon cable connector will not pass through the rubber grommet in
the hole. Use a small screwdriver to push the grommet to the top of the
lid; the cables will now fit through the hole.
Ribbon cable
Signal board
(FID shown)
Signal board clamp
A/D converter board
Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph
8
TCD –Unplug the two-wire switching valve cable at the connector. To
release the PRT and filament wires, press down on the orange tabs. Pass
the disconnected wires through the hole to the top side of the lid.
7. Lower the stop plate on the lid cam. Pull the lid forward until the cam
follower rests on the curved surface of the cam. Leave the stop plate in
the "down" position.
8. Close the lid.
Ribbon cable connector
Ignitor cable connector
Switching valve cable connector
PRT wires Filament wires
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