Agilent 7890 Safety Manual

Agilent 7890 Series Gas Chromatograph

Safety Manual

Agilent Technologies

Notices

CAUTION

WARNING

No p art o f this manu al may be re produce d in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws.

Manual Part Number

G3430-90051

Edition

First edition, January 2013

Printed in USA and China

Agilent Technologies, Inc. 2850 Centerville Road Wilmington, DE 19808-1610 USA

安捷伦科技（上海）有限公司上海市浦东新区外高桥保税区英伦路 412 号联系电话：（800）820 3278

Warranty

The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions. Further, to the maximum 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 limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein. Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control.

Safety Notices

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.

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.

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Agilent 7890 Series Gas Chromatograph Safety Manual

1 Introduction

Important Safety Warnings 4 Hydrogen Safety 7 Micro-Electron Capture Detector (µECD) 14 Fuses and Batteries 16 Safety and Regulatory Certifications 17 Intended Use 21 Cleaning 21 Recycling the Product 21

Agilent Technologies

Introduction

WARNING

Important Safety Warnings

Before moving on, there are several important safety notices that you should always keep in mind when using the Agilent 7890 Series GC.

When handling/using chemicals for preparation or use within the GC, all applicable local and national laboratory safety practices must be followed. This would include, 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.

Many internal parts of the GC carry dangerous voltages

If the GC is connected to a power source, even if the power switch is off, potentially dangerous voltages exist on:

• The wiring between the GC power cord and the AC power supply, the AC power supply itself, and the wiring from the AC power supply to the power switch.

4 7890 Series GC Safety Manual

With the power switch on, potentially dangerous voltages also exist on:

• All electronics boards in the instrument.

• The internal wires and cables connected to these boards.

• The wires for any heater (oven, detector, inlet, or valve box).

All these parts are shielded by covers. With the covers in place, it should be difficult to accidentally make contact with dangerous voltages. Unless specifically instructed to, never remove a cover unless the detector, inlet, or oven are turned off.

If the power cord insulation is frayed or worn, the cord must be replaced. Contact your Agilent service representative.

Do not use an Uninterruptable Power Supply (UPS) with a GC

WARNING

If the area where the GC is located suddenly looses power, an unsafe condition can result if the GC remains powered on. Do not use the GC with a UPS.

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 inlets

• The oven and its contents

• The detectors

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

• The valve box

Introduction

7890 Series GC Safety Manual 5

You should always cool these areas of the GC to room temperature before working on them. They will cool faster if you first set the temperature of the heated zone to room temperature. Turn the zone off after it has reached the setpoint. If you must perform maintenance on hot parts, use a wrench and wear thermally protective gloves. Whenever possible, cool the part of the instrument that you will be maintaining before you begin working on it.

Be careful when working behind the instrument. During cool-down cycles, the GC emits hot exhaust which can cause burns.

Introduction

WARNING

Oven thermal leaks

The insulation around the inlets, detectors, valve box, and the insulation cups 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.

Objects passing through the oven door seal can cause thermal leaks which create hazardous hot spots which cause burns and melt equipment.

Do not allow wiring or temperature probes to pass through the oven door jam. Agilent recommends using one of the access holes.

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Hydrogen Safety

WARNING

Hydrogen gas may be used as carrier gas, and/or as fuel for the FID, FPD, and NPD. When mixed with air, hydrogen can form explosive mixtures.

When using hydrogen (H2) as the carrier gas or fuel gas, be aware that hydrogen gas can flow into the GC oven and create an explosion hazard. Therefore, be sure that the supply is turned off until all connections are made and ensure that the inlet and detector column fittings are either connected to a column or capped at all times when hydrogen gas is supplied to the instrument.

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 a commonly used GC carrier gas. Hydrogen is potentially explosive and has other dangerous characteristics.

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

• 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

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

Introduction

atmospheric pressure, hydrogen is combustible at concentrations from 4% to 74.2% by volume.

atmosphere can self- ignite due to an electrostatic spark.

bright light.

7890 Series GC Safety Manual 7

GC precautions

When using hydrogen as a carrier gas, remove the large round plastic cover for the MSD transfer line located on the GC left side panel. In the unlikely event of an explosion, this cover may dislodge.

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