Koehler K3919 Series Guide

Operation and Instruction Manual
REV B
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
K3919X
Demulsibility Bath

K3919X Demulsibility Characteristics Bath
Operation and Instruction Manual
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K3919X Demulsibility Characteristics Bath
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CERTIFICATE OF CONFORMANCE
Demulsibility Bath
K3919X
This certificate verifies that part number K3919X, Demulsibility Bath, was
manufactured in conformance with the applicable standards set forth in this
certification.
Specifications: ASTM D2711
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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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...................................................................................................................6
2Safety Information and Warnings...............................................................................6
3Getting Started.............................................................................................................7
3.1 Packing List........................................................................................................................................7
3.2 Unpacking..........................................................................................................................................7
3.3 Setup..................................................................................................................................................7
4Descriptions.................................................................................................................8
4.1 Instrument Controls............................................................................................................................8
4.2 Accessories for Running Tests..........................................................................................................8
4.3 Temperature Controller Operation.....................................................................................................9
5Operation....................................................................................................................10
5.1 Bath..................................................................................................................................................10
5.2 Power...............................................................................................................................................10
5.3 Install the K39103 Demulsibility Stirrer............................................................................................11
5.4 Operation Procedure........................................................................................................................11
5.5 Cleaning the Stirrer..........................................................................................................................11
6Safety Features..........................................................................................................11
6.1 Over-Temperature Protection..........................................................................................................11
6.2 Over-Power Protection.....................................................................................................................11
7Maintenance...............................................................................................................12
7.1 Routine Maintenance.......................................................................................................................12
7.2 Replacement Parts ..........................................................................................................................13
8Wiring Diagrams........................................................................................................14
8.1 K39190 Demulsibility Bath, 115V ....................................................................................................14
8.2 K39199 Demulsibility Bath, 220-240V.............................................................................................15
9Troubleshooting ........................................................................................................16
9.1 Unit does not power up....................................................................................................................16
9.2 Unit is on and keeps resetting into start up routine .........................................................................16
9.3 Unit is on but bath does not heat up................................................................................................16
9.4 Bath heats up but temperature does not stabilize ...........................................................................16
10 Service........................................................................................................................16
11 Storage.......................................................................................................................16

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12 Warranty.....................................................................................................................16
13 Returned Goods Policy.............................................................................................17
Notes..................................................................................................................................18

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1 Introduction
The Demulsibility Characteristics Stirrer and
Constant Temperature Demulsibility Bath test
the ability of medium to high viscosity oils to
separate from water when turbulence and
water contamination are encountered according
to the ASTM D2711 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 D3919X Demulsibility
Apparatus and Data Acquisition Software. 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 D2711: Standard Test Method for
Demulsibility Characteristics of Lubricating
Oils.
2. Deutsche International Norm (DIN)
http://www.din.de
DIN Publication:
DIN 51353
1.3 Instrument Specifications
Models:
K39190
K39199
Electrical
Requirements:
115V 50/60Hz
220-240V 50/60Hz
Maximum
Temperature:
100°C (212°F)
Temperature
Control:
Micro Processor digital
control with LED display
Capacity:
Two (2) sample-water
mixtures
Bath Medium:
Water or suitable heat
transfer fluid
Bath Medium
Capacity:
38.5L (9 gal)
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 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.

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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.
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
K39190/K39199
Demulsibility Constant
Temperature Bath,
115V 60Hz
220-240V 50/60Hz
K3919X-Manual
Operation and Instruction
Manual
Accessories (purchased separately, see Section
4.2 for more information):
K39180-SFW
Demulsibility Apparatus
Software Package
K39103
Demulsibility Stirrer
K39120
Separatory Funnel
K39130
Solvent Tank
K39140 / K39149
Forced Warm Air Dryer
(115V / 220-240V)
K39150
Sampling Gauge and
Centering Device
360-000-003
Digital Tachometer
250-000-09F
250-000-09C
ASTM 9F Thermometer
ASTM 9C Thermometer
K39170 / K39179
Conditioning Bath
115V 60Hz
220-240V 50/60Hz
3.2 Unpacking
Carefully unpack and place the instrument and
accessories in a secure location. Use extra care
while unpacking the Pyrex®glass jar. 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.
3.3 Setup
Equipment Placement. Place the instrument 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.
Ventilation. A fume hood or exhaust system is
required when 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. Do NOT turn the power on unless the
bath is filled with the proper medium; otherwise,
damage may occur to the unit and the warranty
will be void.

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4 Descriptions
4.1 Instrument Controls
Figure 2: Instrument Descriptions
1. Power Switch. This switch controls the power
to the entire unit. When the power switch is in
the ON position, the digital temperature
controller, the speed controllers and timers are
turned on.
2. Lamp Switch. This switch controls turning
ON/OFF the lamp for illuminating the test
samples.
3. Temperature Controller. The temperature
controller regulates the bath temperature for
the test procedure. Refer to Section 4.3 for full
operational details.
4. Timer: The apparatus consists of two digital
timers located on the left and right sides for
stirrer 1 and 2. These two timers are
independent of one another and can be set
using the up and down arrow keys. The run
time is set in minutes and counts down to
the end of the run The Start/Stop button is
used to start the motor and override the
counter for emergency stops.
5. Speed Controller / Tachometer: The speed
for each stirrer can be controlled and
displayed independently through the use of
the two controllers located at the top of the
apparatus. The digital tachometer registers
the motor speed in units of RPM. The
speed of the right and left stirrer motors can
be changed using the up and down arrows on
the tachometer. Some fluctuation of the
reading is to be expected as the motor turns,
but the stirrer will meet and exceed the ASTM
specifications. At the end of the run, the
tachometer may continue to display a reading
for about 30 seconds. Please ignore this as
the Tachometer will reset to zero momentarily.
6. Stirrer: The Demulsibility apparatus is
capable of holding two Stirrer assemblies.
These stirrers mount vertically in the
apparatus. The stirrer assemblies are
described in more detail in section 4.2 of this
manual.
7. Constant Temperature Bath: 9 gallon
(38.5L) capacity constant temperature bath
controlled by temperature controller described
in section 4.3 of this manual. Capable of
holding and maintaining the temperature of
two separatory funnels and stirrers.
4.2 Accessories for Running Tests
K39103 Demulsibility Stirrer
Complete stirrer assembly per Fig. 1 and Fig. 2
of ASTM D2711, including variable high speed
drive motor, stainless steel propeller shaft, top,
center and bottom bearings, and steel motor
housing with positioning plate. Entire assembly
mounts vertically in the K3919X Constant
temperature bath. Built in tachometer disc allows
for precise stirrer speed adjustment.
K39120 Separatory Funnel
Designed specifically to meet ASTM D2711 Fig.
3 requirement. Graduated from 0-500mL.
Solvent Tank
Immerses stirrer assembly for convenient
cleaning after testing.

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WARNING: The use of flammable cleaning
solvents is extremely hazardous and ignition may
occur. It is imperative that this instrument be
cleaned with only 1,1,1 –Trichloroethane in
accordance with the procedure described in ASTM
D2711. 1,1,1 –Trichloroethane is harmful if
inhaled or swallowed. Eye Irritant. High
Concentration can cause unconsciousness or
death.
K39140 / K39149 Forced Warm Air Dryer
Available in both 115V 50/60Hz and 220-240V
50/60Hz models High Output 1400W dryer and
brass cylinder mounted on a sturdy bass. Used to
rapidly dry stirrer assembly after cleaning. See
Figure 3 below:
Figure 3: Forced Warm Air Dryer
K39150 Sampling Gauge and Centering Device
Aids in accurately obtaining 50mL samples from
separatory funnels for the ‘percent water in oil’
determination. Designed specifically to meet
ASTM D2711 Fig. X1.1 requirement.
K39170 / K39179 Conditioning Bath
Available in both 115V 60Hz and 220-240V
50/60Hz models. Constant temperature water bath
holds 8 separatory funnels in two removable 4-unit
racks for conditioning prior to testing in
Demulsibility Apparatus. Includes microprocessor
digital temperature control, automatic water level
control and gabled cover.
360-000-003 Digital Tachometer
Handheld non-contact LCD tachometer takes
measurements up to 3 ft away with ±1rpm
accuracy. Supplied with four 1.5V AA batteries
250-000-09F / 250-000-09C ASTM 9F/9C
Thermometer
The ASTM 9F thermometer has a temperature
range from 20 to 230°F. The ASTM 9C
thermometer has a temperature from -5 to 110°C.
4.3 Temperature Controller Operation
Figure 4. Temperature Controller
1. Process Temperature Display. The
upper red LED display shows the process
temperature as read from the RTD probe.
2. Set Point Temperature Display. The
lower green LED display shows the set
point temperature of the controller.
3. Programming Key. Permits scrolling
through controller menu parameters. One
Level Forward
4. Down Key. Used to decrease the set
point temperature and to decrease or
change parameter values when
programming the temperature controller.
5. Up Key. Used to increase the set point
temperature and to increase or change
parameter values when programming the
temperature controller.
6. Exit / Function Key. This key is used to
exit or leave a level. One level backward