Koehler K19404 Guide

Operation and Instruction Manual
REV A
Koehler Instrument Company, Inc.
1595 Sycamore Avenue • Bohemia, New York 11716-1796 • USA
Toll Free: 1-800-878-9070 (US only) • Tel: [phone] • Fax: [phone]
http://www.koehlerinstrument.com • e-mail: [e-mail]
Petroleum Testing & Analysis Instrumentation • Custom Design & Manufacturing
K19404 / K19494
Dropping Point Apparatus

CERTIFICATE OF CONFORMANCE
Dropping Point Apparatus
K19404, K19494
This certificate verifies that part number K19404, K19494, Dropping Point Apparatus,
was manufactured in conformance with the applicable standards set forth in this
certification.
Specifications: ASTM D566
ASTM D4950
IP 132
ISO 2176
DIN 51801
FTM 79-1421
NF T 60-102
This unit is tested before it leaves the factory, to ensure total functionality and
compliance to the above specifications and ASTM standards. Test and inspection
records are on file for verification.
Jesse Kelly
Application Engineer
Koehler Instrument Company

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WEEE Directive Compliance Statement
Background
The goal of the WEEE Directive is to encourage design of environment-friendly products that increase reuse,
recycling and other forms of recovery to reduce waste streams and applies to listed Electronic and Electrical
Equipment (EEE) and Koehler's equipment falls broadly into Appendix 1A; Section 9 Monitoring and Control
Equipment: Measuring, weighing or adjusting appliances for household or as laboratory equipment.
Any associated non-embedded equipment such as Lighting (Saybolt Color) and PCs/Printers also fall under
WEEE. If provided with an order these ancillary items must be WEEE compliant. For these and other reasons
(printer cartridges are regionalized) the equipment must be supplied through a third party supplier in Europe.
The WEEE Directive applies to electrical and electronic equipment falling under the categories set out in Annex
IA provided that the equipment concerned is not part of another type of equipment that does not fall within the
scope of this Directive. Annex IB contains a list of products which fall under the categories set out in Annex IA.
http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2003:037:0024:0038:en:PDF
We do not qualify for any of the 10 exemption categories.
http://www.dpa-system.dk/en/WEEE/Products/Exemptions
Professional use
For equipment defined for ’professional use’ local authorities have no role to play. Producers and importers are
basically responsible for collection of WEEE recyclables from the professional user and for subsequent
management. A separate statement is given cataloging the items that require separation from the equipment
along with basic information on subsequent processing or recycling prior to disposal of the equipment.
http://www.dpa-system.dk/en/WEEE/Products/Private-or-professional-use
Responsibility for Registration and Annual Reporting:
Koehler will not sell directly to end users in the EU and so has no responsibility to register within each EU state
and to make annual reports. Koehler declares that this responsibility is born by the importer who is the first
level of the distribution chain and is subject to producer responsibility. We will communicate this in writing to
our distributor/importers in the EU stating they are responsible to satisfy WEEE registration and reporting
requirements in the EU states where they conduct sales activities.
It is illegal to market electrical and electronic equipment covered by producer responsibility without being
registered.
http://www.dpa-system.dk/en/WEEE/Producers/Whoissubjecttoproducerresponsibility
Product Design
Koehler's designs allow for complete disassembly to a modular level which usually allows for standard
recycling. A qualified refrigeration system technician must be consulted when disassembling and de-
commissioning any equipment with refrigeration systems.
Koehler's scientific testing equipment is robustly designed to function over a long service life and are typically
repaired many times over the course of years rather than being replaced. We believe that re-use and
refurbishment is the very best form of re-cycling.
All batteries must be readily removable not soldered in place.
Recycling instructions
In the event that replacement becomes necessary, we will include instructions, particularized to each
instrument that informs the customer of their recycling responsibilities and giving them guidance in doing this.
All Koehler equipment has been placed on the market since 13th August 2005 and so Koehler is defined as a
"new WEEE producer". As such we must provide information on refurbishment, treatment, and re-use.

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Our instrument manual will include this compliance statement and indicate that any collection of materials will
be handled by their authorized distributor. In the event that the distributor is unreachable or is no longer a
distributor for Koehler Instrument, Co., other arrangements may be made including accepting the materials
directly.
Recycling is free of charge. Shipping is the responsibility of the end users. Whether shipping to a distributor or
to Koehler directly, safe, properly declared, and labeled packaging and shipping expenses are the sole
responsibility of the end user.
WEEE Marking
Since Koehler products are subject to the WEEE Directive we must display the WEEE symbol shown above in
accordance with European Standard EN 50419 on the equipment. It must be indelible, at least 5mm in height,
and clearly legible. If the equipment is too small the mark must be in the product literature, guarantee
certificate, or on the packaging. Rules on marking are established in section 49 of the WEEE Order.
Koehler Instrument Company, Inc.
c/o RECYCLING
1595 Sycamore, Ave.
Bohemia, NY 11716
As a minimum the following substances, preparations and components have to be removed from any
separately collected WEEE:
- Mercury containing components, such as switches or backlighting lamps (compact fluorescent lamps, CFL),
- Batteries
- Printed circuit boards if the surface of the printed circuit board is greater than 10 square centimeters (about 4
sq in.),
- Toner cartridges, liquid and pasty, as well as color toner,
- Chlorofluorocarbons (CFC), hydrochlorofluorocarbons (HCFC) or hydrofluorocarbons (HFC), hydrocarbons
(HC)
- Liquid crystal displays (together with their casing where appropriate) of a surface greater than 100 square
centimeters and all those back-lighted with gas discharge lamps,
- External electric cables
- Components containing refractory ceramic fibers as described in Commission Directive 97/69/EC of 5
December 1997 adapting to technical progress Council Directive 67/548/EEC relating to the classification,
packaging and labeling of dangerous substances (2),
- Electrolyte capacitors containing substances of concern (height > 25 mm, diameter > 25 mm or
proportionately similar volume)
2. The following components of WEEE that is separately collected have to be treated as indicated:
- Equipment containing gases that are ozone depleting or have a global warming potential (GWP) above 15,
such as those contained in foams and refrigeration circuits: the gases must be properly extracted and properly
treated. Ozone-depleting gases must be treated in accordance with Regulation (EC) No 2037/2000 of the
European Parliament and of the Council of 29 June 2000 on substances that deplete the ozone layer (4).

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Table of Contents
1Introduction....................................................................................................................6
1.1 Koehler's Commitment to Our Customers............................................................................................6
1.2 Recommended Resources and Publications ....................................................................................... 6
1.3 Instrument Specifications ..................................................................................................................... 7
2Safety Information and Warnings.................................................................................7
3Getting Started...............................................................................................................8
3.1 Packing List .......................................................................................................................................... 8
3.2 Additional Accessories Required for Testing........................................................................................8
3.3 Unpacking.............................................................................................................................................8
4Setup...............................................................................................................................9
4.1 Assembly Instructions........................................................................................................................... 9
4.2 Instrument Descriptions........................................................................................................................9
5Operation......................................................................................................................11
5.1 Procedure to Fill Test Cup..................................................................................................................11
5.2 Test Tube Apparatus Assembly .........................................................................................................11
5.3 Test Procedure ...................................................................................................................................11
6Safety Features............................................................................................................13
6.1 Over-Power Protection .......................................................................................................................13
7Maintenance.................................................................................................................13
7.1 Routine Maintenance..........................................................................................................................13
7.2 Instrument Cleaning............................................................................................................................13
7.3 Replacement Parts............................................................................................................................. 13
8Troubleshooting...........................................................................................................14
8.1 Unit does not power up.......................................................................................................................14
8.2 Unit is on and keeps resetting into start up routine............................................................................14
9Service..........................................................................................................................14
10 Storage .........................................................................................................................14
11 Warranty .......................................................................................................................14
12 Returned Goods Policy ...............................................................................................15
Notes..................................................................................................................................16

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1 Introduction
The Koehler K194X4 Dropping Point Apparatus
is the latest design used for identification and
quality control applications, and as an indication of
the highest temperature a grease can undergo
without complete liquefaction or oil separation
according to the ASTM D566 test method and
related test specifications.
This manual provides important information
regarding safety, technical reference, installation
requirements, operating condition specifications,
user facility resource requirements, and operating
instructions for the Dropping Point Apparatus.
This manual should also be used in conjunction
with applicable published laboratory procedures.
Information on these procedures is given in
section 1.2.
1.1 Koehler's Commitment to Our
Customers
Providing quality testing instrumentation and
technical support services for research and testing
laboratories has been our specialty for more than
50 years. At Koehler, the primary focus of our
business is providing you with the full support of
your laboratory testing needs. Our products are
backed by our staff of technically knowledgeable,
trained specialists who are experienced in both
petroleum products testing and instrument service
to better understand your requirements and
provide you with the best solutions. You can
depend on Koehler for a full range of accurate and
reliable instrumentation as well as support for your
laboratory testing programs. Please do not
hesitate to contact us at any time with your
inquiries about equipment, tests, or technical
support.
Toll Free: 1-800-878-9070 (US only)
Tel: [phone]
Fax: [phone]
Email: [e-mail]
http://www.koehlerinstrument.com
1.2 Recommended Resources and
Publications
1. American Society for Testing and Materials
(ASTM)
100 Barr Harbor Drive
West Conshohocken, Pennsylvania 19428-
2959, USA
Tel: [phone]
Fax: [phone]
http://www.astm.org
email: [e-mail]
ASTM Publication:
ASTM D566: Standard Test Method for
Dropping Point of Lubricating Grease
ASTM D4950: Standard Classification and
Specification for Automotive Service Greases
2. International Organization for Standardization
(ISO)
1, rue de Varembé
Case postale 56
CH-1211 Geneva 20, Switzerland
Tel: [phone]
Fax: [phone]
http://www.iso.org
ISO Publication:
ISO 2176
3. Energy Institute (IP)
61 New Cavendish Street
London, WIM 8AR, United Kingdom
Tel: [phone]
Fax: [phone]
http://www.energyinstpubs.org.uk/
IP Publication:
IP 132
4. Deutsche International Norm (DIN)
http://www.din.de
DIN Publication:
DIN 51801
5. Federal Test Method (FTM)
FTM Publication:
FTM 791-1421

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1.3 Instrument Specifications
Models:
K19404
K19494
Electrical
Requirements:
115V 60Hz
220-240V 50/60Hz
Power:
1250W
Maximum
Temperature:
288°C (550°F)
Dimensions
(wxdxh,in.(cm)):
10 x 17.5 x 18
(25.4 x 44.5 x 45.72)
Net Weight:
20 lbs (9.1kg)
Gross Weight:
30 lbs (13.6kg)
Altitude:
Rated for use below
2000m
Environmental
Conditions:
As per section 1.4.1 of
IEC 61010
2 Safety Information and Warnings
Safety Considerations. The use of this
equipment may involve hazardous materials and
operations. This manual does not purport to
address all of the safety problems associated with
the use of this equipment. It is the responsibility of
any user of this equipment to investigate,
research, and establish appropriate safety and
health practices and determine the applicability of
regulatory limitations prior to use.
Equipment Modifications and Replacement
Parts. Any modification or alteration of this
equipment from that of factory specifications is
NOT recommended because it voids the
manufacturer warranty, product safety,
performance specifications, and/or certifications
whether specified or implied, and may result in
personal injury and/or property loss. Replacement
parts must be O.E.M. exact replacement
equipment.
Unit Design. This equipment is specifically
designed for use in accordance with the applicable
standard test methods listed in section 1.2 of this
manual. The use of this equipment in accordance
with any other test procedures, or for any other
purpose, is not recommended and may be
extremely hazardous.
Chemical Reagents Information. Chemicals and
reagents used in performing the test may exhibit
potential hazards. Any user must be familiarized
with the possible dangers before use. We also
recommend consulting the Material Data and
Safety Sheet (MSDS) on each chemical reagent
for additional information. MSDS information can
be easily located on the internet at
http://siri.uvm.edu or http://www.sigma-
aldrich.com.

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3 Getting Started
The instructions for preparing the equipment
assume that the user is aware of the contents of
this document, which lists the warranty conditions
and important precautions.
3.1 Packing List
K194X4 Dropping Point Apparatus
K194X4-Manual K194X4 Dropping Point
Apparatus Operation and Instruction Manual
Included Accessories (See Figure 1 below)
- K19494-0-12 Motor Assembly (1)
- 332-002-005 Borosilicate Glass Beaker,
400mL (2)
- K194EA Grease Cup (3)
- K19492 Test Tube with indentations (4)
- K19499 Cork Ring Guide (5)
- K19493 / K194A-0-7 Thermometer Cork,
Qty 2 (6)
- K194E5 Thermometer Depth Gage (7)
- 338-000-001 Clamp Holder (8)
- K194A-0-6 Tube / Thermometer Support (9)
- K194E6 Polished Metal Rod (10)
- 432-111-001 Gage Pin, 2.82mm (0.111")
Outer Diameter (11)
Figure 1: Packing List Components
3.2 Additional Accessories Required for
Testing
250-000-02C ASTM 2C Thermometer
Range: -5 to +300°C
250-000-02FASTM 2F Thermometer
Range: 20 to 580°F
K194E7 Cup Plug Gage
Checks conformity of test cup with
specifications
3.3 Unpacking
1. Check Shock Watch Label on Cardboard Box
for indication of rough handling and possible
damage.
2. Check labeling for correct orientation of
instrument. (e.g. This Side Up)
3. Carefully open top of box with box cutter and
remove packing foam insert.
4. Extract instrument and place on suitable cart
for transportation to work area / lab bench.
WARNING: Be sure two or more individuals
are available for extracting and lifting instrument
from box to cart and from cart to bench.
Individuals must lift in accordance to proper
technique. See Figure below.
5. Lift instrument from cart and place on bench.
6. Carefully unpack and place the instrument and
accessories in a secure location. Ensure that
all parts listed on the packing list are present.
Inspect the unit and all accessories for
damage. If any damage is found, keep all
packing materials and immediately report the
damage to the carrier. We will assist you with
your claim, if requested. When submitting a
claim for shipping damage, request that the
carrier inspect the shipping container and
equipment. Do not return goods to Koehler
without written authorization.

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4 Setup
Equipment Placement. Make sure the instrument
is placed on a firm, level table in an area with
adequate ventilation or in a hood. The unit may be
leveled by making minor turning adjustments to
the feet located at the base of the unit. Please
note that Koehler does not supply a level with this
equipment.
Environmental Conditions: The instrument
environment must comply with the following
conditions for proper setup:
No / Low Dust
No direct sunlight
Not near heating or AC ventilation ducts
No Vibrations
Clearance from other instruments
Temperature Range: 5 to 40°C
Elevation to 2000 meters
Relative Humidity: < 80%
Ventilation. A fume hood or exhaust system is
required for expending any fumes or vapors that
have been generated while operating the unit.
Flammable vapors and/or steam are generated
during operation and must not be permitted to
accumulate. A canopy-style hood may be used if
the height from the top of the unit to the canopy is
5 feet or less. The exhaust blower should have a
rating of 1000 C.F.M. or greater.
Power. Connect the line cords to properly fused
and grounded receptacles with the correct voltage
as indicated in section 1.3 or on the back of the
unit.
WARNING: For safety, disconnect the
power when performing any maintenance and/or
cleaning..
4.1 Assembly Instructions
1. Main Unit Base will come pre-assembled with
the Motor Support Rod affixed to it. At this
time be sure the power switch are in the off
position.
2. Place Beaker (Figure 1, Item 2) on Heating
Plate.
3. Fill the Beaker with the specified heat transfer
fluid to the prescribed level as stated in the
standard test method.
4. Install the Tube and Thermometer Support
(Figure 1, Item 9) to the Beaker positioned
away from the spout of the beaker. This
support can be squeezed for a tighter fit on
the beaker.
5. Insert the bath thermometer into the larger
bath thermometer cork and install into the tube
and thermometer support side without the
metal guide. The bath thermometer should
ultimately be suspended at the same level as
the test tube thermometer when installed.
NOTE: Detail on the Test Tube
Assembly will be described in the Operation
section of the manual.
6. Assemble the stirrer motor (Figure 1, Item 1)
to the motor support rod using the double rod
clamp provided (Figure 1, Item 8).
7. Install the stirrer motor into the beaker and
orientate it so the stirrer motor enters through
the spout of the beaker. Then position the
motor at an angle so that the stirrer will not
interfere with the test tube or bath
thermometer.
8. Plug the stirrer motor line to cord to the
receptacle located at the back of the unit
(Figure 3, Item 11).
4.2 Instrument Descriptions

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Figure 2: Instrument Descriptions_Front
1. Power Switch: Controls power to the entire
unit. Pressing the switch to the ON position will
energize the instrument. Pressing the switch to
the OFF position will de-energize the
instrument. Power switch will illuminate when
instrument is energized.
2. Stirrer Motor Switch. Controls power to the
Stirrer Motor. Light turns ON when the unit is
energized. Power switch must be on prior to
switching on stirrer motor.
3. Temperature Control Dial. The analog dial is
used to control the heating rate of the unit
during the test procedure. This dial is non-
linear, therefore, the numbers indicated on the
dial plate DO NOT refer to specific
temperatures or heating rates. The control dial
can be switched to an OFF position however,
please NOTE that this DOES NOT power off
the instrument.
WARNING: Be sure to completely Power
Off instrument prior to performing any service
of the instrument. This can only be done by
switching the Power Switch to the OFF
position. Turning the heating control dial to the
off position WILL NOT de-energize the
instrument. Only clean instrument or perform
maintenance when power indicating light is off.
4. Test Beaker / Bath: Contains heat transfer
medium to control temperature of apparatus
during testing.
5. Stirrer Motor Assembly: Agitates bath
medium for enhanced bath temperature
homogeny.
6. Clamp Holder: Mounts Stirrer Motor Assembly
to the Vertical Motor Support Rod,
7. Motor Support Rod: Supports Stirrer Motor
Assembly. Support Rod comes affixed to the
Base Unit.
8. Test Tube Thermometer: To measure and
monitor the temperature inside the grease cup.
9. Bath Thermometer: To measure and monitor
the temperature inside the grease cup.
10. Test Tube Apparatus: Comprised of Test
Tube, Thermometer, Thermometer Holder,
Cork Ring Guide and Grease Cup. Site where
Dropping Point Test Takes Place. Please refer
to Section 5.2 for further details on the
preparation of the Test Tube Assembly.
Figure 3: Instrument Descriptions_Back
11. Stirrer Motor Receptacle: For connection of
the stirrer motor line cord.
12. Main Line Cord. Connect Main Line Cord to
properly fused and grounded receptacles with

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the correct voltage as indicated on the serial
plate on the back of the unit.
13. Level Adjustment Knob: Four adjustment
knobs at each corner of the instrument allow
the user to ensure that the instrument is level
during testing. Please note a wrench or clamp
may be necessary to make proper adjustment.
5 Operation
5.1 Procedure to Fill Test Cup
1. Fill the grease test (Figure 1, Item 3) with
sample by pressing the larger opening into the
grease to be tested until the up is filled.
Remove excess grease with a spatula.
2. Gently press the cup, held in a vertical position
with the smaller opening at the bottom, down
over the polished metal rod (Figure 1, Item 10)
until the latter protrudes about 25mm.
3. Press the rod against the cup in such a manner
that the rod makes contact at both upper and
lower peripheries of the cup.
4. Maintain this contact, rotating the cup on the
rod along the index finger to give a spiral-like
motion down the rod to remove a conical
section of the grease which adheres along the
rod.
5. As the cup approaches the end of the rod,
carefully slip the rod out of the cup so that a
smooth film, free of air bubbles and of
reproducible thickness, remains inside the cup.
6. Refer to Figure 5 below for an illustration of
steps 1 thru 5 above.
Figure 4: Procedure to Fill Test Cup
5.2 Test Tube Apparatus Assembly
1. Place the smaller of the corks with groove
(Figure 1, Item 6) and the cork ring guide
(Figure 1, Item 5) on the thermometer to be
used in the test tube.
2. Place the brass thermometer depth gage
(Figure 1, Item 7) in the test tube.
3. With the thermometer depth gage in position in
the test tube, adjust the position of the upper
cork on the thermometer so that the
thermometer bulb bottoms snugly in the depth
gage.
4. Observe the relative position of the top edge of
the upper cork to the thermometer stem as well
as the relative position of the top edge of the
test tube to the cork.
NOTE: Care must be taken to be certain
that the thermometer is inserted to the same
depth when the apparatus is reassembled with
the grease cup in position.
5. Replace the thermometer depth gage with the
grease test cup (Figure 1, Item 3) so that the
thermometer is inserted to the previously
gaged depth. When properly inserted, the bulb
of the thermometer does not touch either the
grease sample or the cup.
6. Please refer to Figure 2 below for an illustration
of the fully assembled Beaker and Test Tube
Assembly from steps 1 thru 5 above.
Figure 5: Beaker and Test Tube Apparatus Assembly
5.3 Test Procedure

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1. Suspend the fully prepared and assembled test
tube apparatus in the oil bath through the tube
and thermometer support (Figure 1, Item 9)
with metal guide.
NOTE: The test tube rim should be at
least 6mm above the oil level. Adjust oil level if
necessary.
2. Suspend the bath thermometer into the oil bath
through the tube and thermometer support
without the metal guide. The bulb must be at
approximately the same level as the bulb of the
test tube thermometer.
3. Power on the unit by pressing the power switch
(Figure 2, Item 1) to the ON position.
NOTE: The button has a indicator light
built in and will illuminate green when the unit is
powered on.
4. Turn on the stirrer motor by pressing the Stirrer
Motor Switch (Figure 2, Item 2).
NOTE: The button has a indicator light
built in and will illuminate green when the stirrer
motor is powered on.
WARNING: Be sure the stirrer motor is
not in contact with the bath thermometer, test
tube or beaker prior to turning on the stirrer
motor.
5. Turn the Temperature Control Dial (Figure 2,
Item 3) Clockwise to begin heating the sample.
6. Heat the bath at a rate of 4 to 7°C / min until
the bath reaches a temperature of
approximately 17°C below the expected
dropping point of the grease.
7. At this point reduce the rate of heating so that
the temperature difference between the test
tube and the oil bath is maintained between 1
and 2°C.
NOTE: This condition is established
when the oil bath is heated at a rate of about 1
to 1.5°C.
8. As the temperature increases, material will
gradually protrude through the orifice of the
grease cup. When a drop of material falls, note
the temperatures on the two thermometers and
record their average to the nearest degree as
the dropping point of grease.
9. After the dropping point occurs, turn the
Temperature Control Dial counterclockwise to
the off position. Press the stirrer motor switch
to the off position. Press the Power Switch to
the off position. Unplug the stirrer motor line
cord from the back of the unit.

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6 Safety Features
The Koehler K194X4 Dropping Point Apparatus
is equipped with several safety and protection
features, which are described in the following
sections.
6.1 Over-Power Protection
The Koehler K194X4 Dropping Point Apparatus
is equipped with Over-Power Protection circuitry,
which prevents the unit from unsafe electrical
conditions. If power to the unit is lost, then turn off
the main power and turn it back on again. The
main power switch also functions as a circuit
breaker.
WARNING: Disconnect power to the unit
before servicing and accessing any internal
portion of the instrument to avoid exposure to high
voltages and/or temperatures which may result in
personal injury or death. If you have any questions
about maintaining your equipment, then please do
not hesitate to contact the Koehler technical
service department.
7 Maintenance
WARNING. Disconnect power to the unit
before servicing to avoid exposure to high
voltages and/or temperatures which may result in
personal injury or death. If you have any questions
about maintaining your equipment, please do not
hesitate to contact the Koehler technical service
department.
7.1 Routine Maintenance
The K19494 Dropping Point Apparatus requires
little routine maintenance to provide many years of
continuous service. However, over the course of
time, some instrument parts may need to be
replaced. When ordering replacement part(s),
please provide the model number, serial number,
and product shipment date of your equipment so
that we can ensure you will receive the proper
replacement part(s).
7.2 Instrument Cleaning
To clean the instrument’s exterior, which
includes all painted surfaces, either a solution
of soap and water or laboratory grade
detergent may be used.
Apply cleaner to clean wipe or cloth, not to the
instrument directly. Wipe surface clean.
Do Not clean bath exterior with organic
chemicals such as Acetone, Toluene, Hexane,
etc.
For more difficult cleaning of finished surfaces,
a dilute solution of isopropanol in water may
be used.
It is not recommended that more aggressive
solvents be used on painted surfaces since
paint color will tarnish or be stripped from the
instrument.
Stainless Steel surfaces, such as on the top
plate, may be cleaned using a more
aggressive solvent such as a stainless steel
cleaner.
SHOCK AND BURN HAZARD: Only clean
inside the bath when equipment is de-energized
and unplugged from the mains power supply.
Allow adequate time for heating coils to completely
cool before cleaning.
7.3 Replacement Parts
Part Number
Description
225-230-002
Brick Heater, 1000W, 230V
K19494-0-12
Stirrer Motor, 230V 50/60Hz
K19292
Test Tube with Indentations
K19493
Test Tube Thermometer Cork
K194A-0-7
Bath Thermometer Cork
K194A-0-6
Test Tube and Thermometer
Support
332-002-005
Borosilicate Glass Beaker,
400mL
K194A-0-11
Beaker Support
K194EA
Grease Cup
K194E6
Polished Metal Rod
K194E5
Thermometer Depth Gage
K19499
Cork Ring Guide
K19490-01000
Stirrer Assembly
338-000-001
Clamp Holder
432-111-001
Gage Pin, 2.82mm (0.111")

K19404, K19494 Dropping Point Apparatus
Operation and Instruction Manual
K19404, K19494-Manual -14-
8 Troubleshooting
WARNING: Troubleshooting procedures
involve working with high voltages and/or
temperatures which may result in personal injury
or death, and should only be performed by trained
personnel. Please do not hesitate to contact
Koehler for assistance.
8.1 Unit does not power up
Establish that the socket outlet is providing
proper and adequate voltage.
Check if Overpower Protection circuitry located
directly behind the temperature controller inside
the front tray has been activated.
Check if line switch is in the ON position.
Check fuse on wattstat.
If problem persists, please call the Koehler
technical service department for assistance.
8.2 Unit is on and keeps resetting into
start up routine
For 230V units, make sure that the socket outlet
is greater than 215V.
Check if there is a steady and reliable power
source.
Make sure the connector plug on the rear panel
is firmly plugged in.
9 Service
Under normal operating conditions and with
routine maintenance, the K19494 Dropping Point
Apparatus does not require service. Any service
problem can be quickly resolved by contacting
Koehler’s technical service department either by
letter, phone, fax, or email. In order to assure the
fastest possible service, please provide us with the
following information.
Model Number: ____________________
Serial Number: ____________________
Date of Shipment: ____________________
10 Storage
This laboratory test instrument is equipped with
electrical components. Storage facilities should be
consistent with an indoor laboratory environment.
This testing equipment should not be subjected to
extremes of temperature and/or moisture. This
equipment was shipped from the factory in a
corrugated cardboard container. If long term
storage is anticipated, re-packing the instrument in
a water-resistant container is recommended to
ensure equipment safety and longevity.
11 Warranty
We, at Koehler, would like to thank you for your
equipment purchase, which is protected by the
following warranty. If within one (1) year from the
date of receipt, but no longer than fifteen (15)
months from the date of shipment, Koehler
equipment fails to perform properly because of
defects in materials or workmanship, Koehler
Instrument Company, Inc. will repair or, at its sole
discretion, replace the equipment without charge
F.O.B. its plant, provided the equipment has been
properly installed, operated, and maintained.
Koehler Instrument Company must be advised in
writing of the malfunction and authorize the return
of the product to the factory. The sole
responsibility of Koehler Instrument Company and
the purchaser’s exclusive remedy for any claim
arising out of the purchase of any product is the
repair or replacement of the product. In no event
shall the cost of the purchaser’s remedy exceed
the purchase price, nor shall Koehler Instrument
Company be liable for any special, indirect,
incidental, consequential, or exemplary damages.
KOEHLER INSTRUMENT COMPANY, INC.
DISCLAIMS ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTIES OF FITNESS FOR A
PARTICULAR PURPOSE. Please save the
shipping carton in the event the equipment needs
to be returned to the factory for warranty repair. If
the carton is discarded, it will be the purchaser’s
responsibility to provide an appropriate shipping
carton.

K19404, K19494 Dropping Point Apparatus
Operation and Instruction Manual
K19404, K19494-Manual -15-
12 Returned Goods Policy
To return products for credit or replacement,
please contact Koehler Customer Service with
your purchase order number, our packing
list/invoice number, the item(s) to be returned and
the reason for the return. You will be issued a
Returned Authorization (RA) number, which must
be prominently displayed on the shipping
container when you return the material to our
plant. Shipping containers without an RA number
prominently displayed will be returned to the
sender. Goods must be returned freight prepaid.
Returns will be subject to a restocking charge, the
application of which will depend upon the
circumstances necessitating the return. Some
returns cannot be authorized, including certain
products purchased from outside vendors for the
convenience of the customer, products
manufactured on special order, products shipped
from the factory past ninety (90) days, and
products which have been used or modified in
such a way that they cannot be returned to stock
for future sale.

K19404, K19494 Dropping Point Apparatus
Operation and Instruction Manual
K19404, K19494-Manual -16-
Notes