Labconco Rapid Digestor Fume Removal System User Manual
Rapid Digestor Fume Removal System
Model 23500-20 – Designed for 20 Place Block Digestors
Model 23500-25 – Designed for Rapid Digestor 25 Place
Model 23540 – Designed for Rapid Digestor 4 Place
INSTRUCTION MANUAL
Product designs are subject to change without notice
© 1999, 2007, 2013 Labconco Corporation
2350500 – Rev. G / ECO H435
Printed in U.S.A.
TABLE OF CONTENTS
Preface ..........................................................................................................................................................4
Introduction
General Description .................................................................................................................................5
Detailed Operation Function...................................................................................................... 5
Exhaust Manifold................................................................................................................................ 5
Water Jet Eductor.................................................................................................................. 5
Stand and Drip Pan ............................................................................................................... 5
Specifications............................................................................................................................. 6
Installation................................................................................................................................................... 7
Normal Operation.......................................................................................................................................8
Routine Maintenance..................................................................................................................................9
Replacement Parts ....................................................................................................................................10
Water Eductor Assembly .........................................................................................................................11
Water Eductor Installation Methods ......................................................................................................12
Model No. 23500-20 ..................................................................................................................................13
Model No. 23500-25 ..................................................................................................................................14
Fume Removal R/D-4 ............................................................................................................................... 15
Warranty ...................................................................................................................................................16
Shipping Claims ........................................................................................................................................17
Contacting Labconco ................................................................................................................................18
PREFACE
Thank you for displaying confidence in us by selecting a Labconco Rapid Digestor Fume
Removal System. Our design engineers, assemblers and inspectors have utilized their skills and
years of experience to ensure that the new Labconco Rapid Digestor Fume Removal system
meets our high standards of quality and performance.
IMPORTANT NOTICE
This manual should be read carefully by all the end users in order to become familiar
with the operation of the Labconco Rapid Digestor Fume Removal System. Recommendations
are made within the manual to help you obtain maximum performance and life from your
products.
We have included sections on initial set up, operations, maintenance and troubleshooting
to provide you with all the tools necessary to achieve maximum performance.
If you have questions or concerns, do not hesitate to call us at 1-800-821-5525 for
assistance.
4
INTRODUCTION
General Description
The Labconco Fume Removal Systems are designed to remove corrosive fumes produced
when performing Kjeldahl digestions utilizing either the Labconco’s Rapid Digestors or
Block Digestors having a 20 digestion tube configuration. Models 23500-25 and 23540 are
used with Labconco’s Rapid Digestors, whereas, Model 23500-20 is used with the 20 place
block digestor systems. Fumes from a digestion are removed from the digestion tubes
through the exhaust manifold by a water jet eductor, which empties into a convenient drain.
Detailed Operation Function
The Labconco fume Removal System consists of the exhaust manifold, water jet
eductor, stand for exhaust manifold, and drip pan. Model 23540 fume removal system for
the 4-place digestor does not include jet eductor, stand, or drip pan.
Exhaust Manifold
The manifold consists of the glass removal system contained in aluminum, stainless
steel on the 4-place system housing. All aluminum parts are finished by a chemically etched
process to withstand corrosion. The glass manifold has either four, twenty, or twenty-five
bulbs, depending on model number that fit directly into the digestor tubes providing fume
removal. The glass manifold pipes are interchangeable and can be replaced in case of
breakage. High temperature acid resistant hose is provided for the connection from the glass
manifold to the water jet eductor.
Water Jet Eductor – Not applicable to Model #23540
The Water Jet Eductor is made of an acid resistant material to assure long life and
trouble free operation. The movement of water through the eductor creates a vacuum that
exhausts the fumes collected by the exhaust manifold. The amount of water flow required is
usually in the range of 2-3 gallons/minute. The amount of vacuum required from the water
eductor is controlled by the adjustment of the water flow rate.
Stand and Drip Pan – Not applicable to Model #23540
The stand is designed to hold the exhaust manifold when not in use. The drip pan is
placed under the stand to catch any acid drippings. Each is finished with an acid resistant
coating to assure long life and good appearance.
5
INTRODUCTION
Specifications
1. Water Requirements
Supply tap water
Demand 2-3 gallons/minute
Connections for eductor 1/2" male (A1/2" x 3/8" nipple is provided
for connection to a regular laboratory
gooseneck faucet.
2. Physical Specifications
Weight (exhaust manifold 5.7 lbs. Model #23500-20 (20 place system)
Including water jet eductor). 7.1 lbs. Model #23500-25 (25 place system)
4 lbs. Model #23540 (4 place system without
Water Jet Eductor).
3. Drain
Drain must be capable of handling 2-3 gallons/minute water flow. Eductor water
outlet must enter into a sink or a laboratory drain and it is recommended that the
eductor drain be located in a fume hood. If location in fume hood is not possible,
refer to layout drawings located on page 8. Water Jet Eductor not included with
Model #23540.
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