VWR International 89508-426, 89508-428 Operating And Maintenance Manuall

User Manual

VWR®Collection Models 89508-426
and 89508-428

Vacuum Oven

Operating and Maintenance Manual 7006291 • Rev. 0

VWR Collection

MANUAL NUMBER 7006291

0 -- 10/7/13 Original ccs

REV ECR/ECN DATE DESCRIPTION By

Preface

Vacuum Oven i

Models covered in this manual:

Catalog

Numbers

Model

Numbers

Voltage Feature Size (cu ft)

89508-426 6291 120V Dial thermometer 0.7

89508-428 6292 120V Dial thermometer 2.3

VWR Collectionii Vacuum Oven

Preface

Important Read this instruction manual. Failure to read, understand and follow the instructions in this manual
may result in damage to the unit, injury to operating personnel, and poor equipment performance.

s

Caution All internal adjustments and maintenance must be performed by qualified service personnel. s

Material in this manual is for information purposes only. The contents and the product it describes are subject to
change without notice. VWR International makes no representations or warranties with respect to this manual.
In no event shall VWR be held liable for any damages, direct or incidental, arising out of or related to the use of
this manual.

©2013 VWR International, LLC. All rights reserved.

VWR Collection Vacuum Oven iii

Preface

Important operating and/or maintenance instructions. Read the accompanying text carefully.

Potential electrical hazards. Only qualified persons should perform procedures associated with this
symbol.

Equipment being maintained or serviced must be turned off and locked off to prevent possible injury.

Hot surface(s) present which may cause burns to unprotected skin, or to materials which may be
damaged by elevated temperatures.

Marking of electrical and electronic equipment, which applies to electrical and electronic equipment
falling under the Directive 2002/96/EC (WEEE) and the equipment that has been put on the market
after 13 August 2005.

This product is required to comply with the European Union’s Waste Electrical & Electronic
Equipment (WEEE) Directive 2002/96/EC. It is marked with the WEEE symbol. VWR International
has contracted with one or more recycling/disposal companies in each EU Member State European
Country, and this product should be disposed of or recycled through them. Further information on
VWR’s compliance with this directive, the recyclers in your country and information on VWR
products will be available at www.thermofisher.com.

4 Always use the proper protective equipment (clothing, gloves, goggles, etc.)

4 Always dissipate extreme cold or heat and wear protective clothing.

4 Always follow good hygiene practices.

4 Each individual is responsible for his or her own safety.

Vacuum Oven ivVWR Collection

Table of Contents

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Unpacking and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Hose Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Loading the Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Unloading the Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Purging the Chamber with Inert Gas . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Releasing the Vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Maintaining Proper Vacuum Level . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Routine Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

Care and Cleaning of Stainless Steel . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

The pH Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

Cleansing Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

Special Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

Cleaning Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5

Door Gasket Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

Section 1

Section 2

Section 3

Section 4

Section 5

Section 6

Section 8

Section 7

Vacuum Oven 1-1VWR Collection

Section 1 Description

VWR Collection Vacuum Ovens are designed for drying media under
carefully controlled conditions - in a normal atmosphere, a vacuum of up
to 30 inches Hg, or an inert gas atmosphere.

The oven is primarily used for desiccating, vacuum embedding, plating
and electronic component processing. Non-corrosive, nonflammable gases
such as nitrogen and carbon dioxide can be used in the oven.

All controls and connections (except electrical power) are located on the
front vertical panel - these include lighted power switch, vacuum gauge,
temperature control, vacuum control valve and nickel-plated hose
connectors.

Uniform radiant wall heat, with no internally exposed heaters, optimizes
chamber space. 3” (76mm) of glass wool insulation throughout helps
maintain temperature uniformity effectiveness. Temperature is controlled
by a hydraulic thermostat and can be read on the dial thermometer.

The chamber of the unit is not designed for exposure to concentrated
solvents, oils, concentrated acids or dilute sodium hydroxide.

Vacuum levels are precisely held between 0” and 30” of mercury.

The silicone door gasket assures a tight seal at all vacuum levels. A high
strength tempered glass window allows full view of oven contents. Two
aluminum shelves provide good heat conduction to samples. The shelf
assembly removes for easy cleaning.

Note When operating in a vacuum, there is no transfer of heat from the
evacuated chamber interior to objects within the chamber unless they are
resting directly upon one of the shelves - do not put insulating material
between a shelf and a vessel being heated. Also, be sure that a
thermometer’s sensor element is in direct contact with the surface of the
center shelf when taking a reading.

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Vacuum Oven 2-1VWR Collection

Section 2 Safety Information

Your VWR Collection Vacuum Oven has been designed with function,
reliability, and safety in mind. It is your responsibility to install it in
conformance with local electrical codes. It is most important that the user
follow installation instructions exactly as written. Failure to do so is likely
to lead to improper operation, erroneous calibrations and possible damage
to the equipment. Use in the manner specified by the manufacturer. The
protection provided by the equipment may be impaired. Do not attempt
operation without this information.