Agilent Technologies 990 Micro GC Guida utente

Agilent 990 Micro GC and 990 Mobile Micro GC

Chromatograph

Safety Manual

Notices

No part of this manual may be repro-

duced in any form or by any means

(including electronic storage and

retrieval or translation into a foreign lan-

guage) without prior agreement and

written consent from Agilent Technolo-

gies, Inc. as governed by United States

and international copyright laws.

Manual Part Number

G3588-90000

Edition

First edition, October 2019

Printed in USA

Agilent Technologies, Inc.

2850 Centerville Road 

Wilmington, DE 19808-1610 USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is subject

to being changed, without notice, in

future editions. Further, to the maxi-

mum extent permitted by applicable

law, Agilent disclaims all warranties,

either express or implied, with regard

to this manual and any information

contained herein, including but not lim-

ited to the implied warranties of mer-

chantability and fitness for a particular

purpose. Agilent shall not be liable for

errors or for incidental or consequen-

tial damages in connection with the

furnishing, use, or performance of this

document or of any information con-

tained herein. Should Agilent and the

user have a separate written agree-

ment with warranty terms covering the

material in this document that conflict

with these terms, the warranty terms in

the separate agreement shall control.

Technology Licenses

The hardware and/or software described

in this document are furnished under a

license and may be used or copied only

in accordance with the terms of such

license.

Restricted Rights Legend

U.S. Government Restricted Rights. Soft-

ware and technical data rights granted to

the federal government include only

those rights customarily provided to end

user customers. Agilent provides this

customary commercial license in Soft-

ware and technical data pursuant to FAR

12.211 (Technical Data) and 12.212

(Computer Software) and, for the Depart-

ment of Defense, DFARS 252.227-7015

(Technical Data -Commercial Items) and

DFARS 227.7202-3 (Rights in Commer-

cial Computer Software or Computer

Software Documentation).

Safety Notices

CAUTION

A CAUTION notice denotes a 

hazard. It calls attention to an

operating procedure, practice,

or the like that, if not correctly

performed or adhered to, could

result in 

damage to the product or loss

of important data. Do not

proceed beyond a CAUTION

notice until the indicated

conditions are fully understood

and met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice,

or the like that, if not correctly

performed or adhered to, could

result in personal injury or

death. Do not proceed beyond a

WARNING notice until the

indicated conditions are fully

understood and met.

Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual 3

Contents

Important Safety Warnings 5

Hydrogen Safety 9

Power 11

Safety and Regulatory Certifications 13

Safety Symbols 16

Electromagnetic compatibility 17

Intended Use 18

Cleaning 18

Recycling the Product 18

4 Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual

Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual 5

Important Safety Warnings

There are several important safety notices that you should always keep in mind

when using the Micro GC.

WARNING

When handling or using chemicals for preparation or use within the Micro GC, all

applicable local and national laboratory safety practices must be followed. This

includes, but is not limited to, correct use of Personal Protective Equipment

(PPE), correct use of storage vials, and correct handling of chemicals, as defined

in the laboratory’s internal safety analysis and standard operating procedures.

Failure to adhere to laboratory safety practices could lead to injury or death.

Lifting

WARNING

The GC is heavy. To avoid injury, use a two–person lift.

CAUTION

Prior to moving, disconnect all electrical and gas connections and completely

close all covers and enclosures.

CAUTION

Make sure your GC has adequate distance from the wall and other instruments.

CAUTION

For the Mobile Micro GC, make sure lid is closed.

CAUTION

Prior to moving, toggle the battery switch off. See the Mobile Micro GC User

Manual (G3588-90015) for detailed information.

Important Safety Warnings

6 Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual

Electrostatic discharge is a threat to GC

electronics

The printed circuit (PC) boards in the GC can be damaged by electrostatic

discharge. Do not touch any of the boards unless it is absolutely necessary. If

you must handle them, wear a grounded wrist strap and take other antistatic

precautions. Wear a grounded wrist strap any time you must remove the GC

right side cover.

Many parts are dangerously hot

Many parts of the GC operate at temperatures high enough to cause serious

burns. These parts include but are not limited to:

•The inlet area

•The injector area

•The column area

•The sample line area

•The detector area

•The column nuts attaching the column to an inlet or detector

•The valve box

You should always cool these areas of the GC to room temperature before

working on them. If you must perform maintenance on hot parts, use a wrench

and wear thermally protective gloves.

Whenever possible, cool the instrument part that you will be maintaining before

you begin working on it.

WARNING

The insulation around the injector, sample line, and column heater is made of

refractory ceramic fibers. To avoid inhaling fiber particles, we recommend the

following safety procedures: ventilate your work area; wear long sleeves,

gloves, safety glasses, and a disposable dust/mist respirator; dispose of

insulation in a sealed plastic bag; wash your hands with mild soap and cold

water after handling the insulation.

Important Safety Warnings

Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual 7

General safety precautions

Follow the following safety practices to ensure safe equipment operation:

•Perform periodic leak checks on all supply lines and pneumatic plumbing.

•Do not allow gas lines to become kinked or punctured. Place lines away from

foot traffic and extreme heat or cold.

•Store organic solvents in fireproof, vented and clearly labeled cabinets so

they are easily identified as either toxic, or flammable, or both types of

materials.

•Do not accumulate waste solvents. Dispose of such materials through a

regulated disposal program and not through municipal sewage lines.

WARNING

This instrument is designed for chromatographic analysis of appropriately

prepared samples. It must be operated using appropriate gases and within

specified maximum ranges for pressure, flows, and temperatures as described

in this manual. If the equipment is used in a manner not specified by the

manufacturer, the protection provided by the equipment may be impaired.

WARNING

It is the responsibility of the customer to inform Agilent customer support

representatives if the instrument has been used for the analysis of hazardous

samples, prior to any instrument service being performed or when an

instrument is being returned for repair.

•Avoid exposure to potentially dangerous voltages. Disconnect the instrument

from all power sources before removing protective panels.

•When it is necessary to use a non-original power cord and plug, make sure

the replacement cord adheres to the color coding and polarity described in

the manual and all local building safety codes.

•Replace faulty or frayed power cords immediately with the same type and

rating.

•Place this instrument in a location with sufficient ventilation to remove gases

and vapors. Make sure there is enough space around the instrument for it to

cool off sufficiently.

•Do not turn on the instrument if there is a possibility of any kind of electrical

damage. Instead, disconnect the power cord and contact your local Agilent

sales office.

•Before plugging in your instrument, verify that the voltage of your local power

source is set appropriately.

Important Safety Warnings

8 Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual

•The supplied power cord must be inserted into a power outlet with a

protective ground connection. When using an extension cord, make sure that

the cord is also properly grounded.

•Do not change any external or internal grounding connections, as this could

endanger you or damage the instrument.

•The instrument is properly grounded when shipped. You do not need to make

any changes to the electrical connections or to the instrument chassis to

ensure safe operation.

•When working with this instrument, follow the regulations for Good

Laboratory Practices (GLP). Take care to wear safety glasses and

appropriate clothing.

•Do not place containers with flammable liquids on this instrument. Spilling

liquid over hot parts may cause fire.

•

This instrument may use flammable or explosive gases, such as hydrogen gas

under pressure. Before operating the instrument be sure to be familiar with and

to follow accurately the operation procedures prescribed for those gases.

•Never try to repair or replace any component that is not described in this

manual without the assistance of an Agilent service engineer. Unauthorized

repairs or modifications will result in rejection of warranty claims.

•Always disconnect the AC power cord before attempting any type of

maintenance.

•Use proper tools when working on the instrument to prevent danger to you or

damage to the instrument.

•Do not attempt to replace any battery or fuse in this instrument other than as

specified in the manual.

•

Damage can result if the instrument is stored under unfavorable conditions for

prolonged periods. (For example, damage will occur if stored while subject to

heat, water, or other conditions exceeding the allowable operating conditions).

•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.

•Substituting parts or performing any unauthorized modification to the

instrument may result in a safety hazard.

•Changes or modifications not expressly approved by the responsible party

for compliance could void the user's authority to operate the equipment.

Hydrogen Safety

Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual 9

Hydrogen Safety

Hydrogen is a commonly used GC carrier gas. When mixed with air, hydrogen

can form explosive mixtures and has other dangerous characteristics.

WARNING

When using hydrogen (H2) as the carrier gas, be aware that hydrogen gas can

create a fire or explosion hazard. Be sure that the supply is turned off until all

connections are made.

Hydrogen is flammable. Leaks, when confined in an enclosed space, may

create a fire or explosion hazard. In any application using hydrogen, leak test all

connections, lines, and valves before operating the instrument. Always turn off

the hydrogen supply at its source before working on the instrument.

•Hydrogen is combustible over a wide range of concentrations. At

atmospheric pressure, hydrogen is combustible at concentrations from 4%

to 74.2% by volume.

•Hydrogen has the highest burning velocity of any gas.

•Hydrogen has a very low ignition energy.

•Hydrogen that is allowed to expand rapidly from high pressure into the

atmosphere can self-ignite.

•Hydrogen burns with a nonluminous flame which can be invisible under

bright light.

•If hazardous gases are used, ensure there is proper exhaust ventilation.

Hydrogen Safety

10 Agilent 990 Micro GC and 990 Mobile Micro GC Chromatograph Safety Manual

Hydrogen shutdown

Hydrogen gas may be used as a carrier or as fuel for some applications. When

mixed with air, hydrogen can form explosive mixtures.

The GC monitors inlet, detector, and auxiliary gas streams. If a stream shuts

down because it is unable to reach its flow or pressure setpoint and if that

stream is configured to use hydrogen, the GC assumes that a leak has occurred

and declares a hydrogen safety shutdown. The effects are:

•The offending channel and any associated channels (such as septum purge)

are set off.

•The split valves in the inlets open.

•The small heated zones are turned off.

•An alarm tone sounds.

To recover from this state, fix the cause of the shutdown (tank valve closed,

serious leak, others). Turn the instrument off, then back on.

WARNING

The GC cannot always detect small leaks in inlet and/or detector gas streams.

For this reason, it is vital that column fittings should always be either connected

to a column, or have a cap or plug installed. The H2streams must be configured

for hydrogen so that the GC is aware of hydrogen use.

Measuring hydrogen gas flows

WARNING

Do not measure hydrogen together with air or oxygen. This can create explosive

mixtures that can be ignited by the hot surface or high temperature areas.

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