Koehler K23371 Guide

operation and instruction manual
K23371, K23376, K23377, K23378
Kinematic Viscosity Bath, KV1000
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KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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CERTIFICATE OF CONFORMANCE
Constant Temperature Kinematic Viscosity Bath, KV1000
K23371-00000, K23376-00000, K23377-00000, K23378-00000
This certificate verifies that part numbers K23371-00000, K23376-00000, K23377-00000, K23378-00000, Constant
Temperature Kinematic Viscosity Baths, were manufactured in conformance with the applicable standards set forth in
this certification.
Specifications: ASTM D445
ASTM D2532
ASTM D6074
ASTM D6158
IP 71
ISO 3104
DIN 51550
FTM 791-305
NF T 60-100
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.
Vincent Colantuoni
Product Manager
Koehler Instrument Company, Inc.
1595 Sycamore Ave.
Bohemia, NY 11716
United States of America
Serial Number: ________________________
Date: ________________________________

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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WEEE Directive
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.

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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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.
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).

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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Table of Contents
1. Introduction 2
1.1. Koehler’s Commitment to Our Customers 2
1.2. Recommended Resources and Publications 2
1.3. Instrument Specifications 3
2. Safety Information and Warnings 3
3. Getting Started 3
3.1. Packing List 3
3.2.Unpacking 4
3.3.Setup 4
4. Descriptions 5
4.1.Instrument Description 5
4.2.Accessories for Running Tests 5
4.3.Temperature Controller 8
4.4.Recommended Accessories 9
5. Operation 9
5.1.Bath 9
5.2.Power 9
5.3.Circulator Pump 10
5.4.Temperature Controller Operation 10
5.5.Starting a Test 12
6. Safety Features 13
6.1.Over-Temperature Protection 13
6.2. Over-Power Protection 13
7. Maintenance 13
7.1.Routine Maintenance 13
7.2.Replacement Parts 14
8. Troubleshooting 14
9.1. Unit Will Not Operate (no heat, cooling, or pumping) 14
8.2.No Pumping 14
8.3.Slow or Insufficient Pumping 14
9. Service 14
10.Storage 15
11.Warranty 15
12.Returned Goods Policy 15

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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1. Introduction
The Koehler KV1000 Kinematic Viscosity Bath is for performing kinematic viscosity tests with glass capillary viscometers according
to the ASTM D445 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 Kinematic Viscosity Bath. 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 almost 100 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: [email protected]
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: [email protected]
ASTM Publication:
•ASTM D445: Kinematic Viscosity of Transparent and
Opaque Liquids (and the Calculation of Dynamic
Viscosity)
•ASTM D6074: Standard Guide for Characterizing
Hydrocarbon Lubricant Base Oils
•ASTM D6158: Standard Specification for Mineral
Hydraulic Oils
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 3104: Petroleum products - Transparent and
Opaque Liquids - Determination of Kinematic
Viscosity and Calculation of Dynamic Viscosity
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 71: Kinematic Viscosity and Calculation of
Dynamic Viscosity
4. Deutsche International Norm (DIN)
http://www.din.de
DIN Publication:
•DIN 51550: Determination of Kinematic Viscosity and
Dynamic Viscosity
5. Federal Test Method (FTM)
FTM Publication:
•FTM 791-305: Kinematic Viscosity of Petroleum
Products
6. Association Francaise de Normalisation (ANFOR)
http://www.anfor.fr
ANFOR Publication:
•NFT 60-100: Kinematic Viscosity of Petroleum
Products

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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1.3. Instrument Specifications
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.
Over Temperature Protection. This unit is equipped with Over Temperature Protection (OTP) circuitry to prevent overheating.
The unit will automatically interrupt power whether equipment malfunction or operator error causes the temperature to exceed
either 20 °C above the set point or the maximum recommended temperature range. The power can only then be restored by
identifying and correcting the problem, Allowing the unit to return to normal operating temperatures, and resetting the power to the
unit.
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
•KV1000 Digital Constant Temperature Kinematic Viscosity Bath
•Round Viscometer Port Cover (6)
•Thermometer Holder (2)
•Tapered Plug (2)
•KV1000-Manual KV1000 Operation and Instruction Manual
•IEC Power Cord
Models:
K23371-00000
18” Bath
115V 60Hz
K23376-00000
12” Bath
115V 60Hz
K23377-00000
12” Bath
220-240V 50/60Hz
K23378-00000
18” Bath
220-240V 50/60Hz
Temperature Range:
Ambient to 150°C (302°F)
Temperature Control Stability:
± 0.05°C
Viscometer Ports:
Six (6) Round 2”
(51mm) ports
Capacity:
Six (6) Glass Capillary Viscometers
Bath Medium:
Water or suitable head transfer fluid
Bath Medium Capacity:
22L (5.8 gal) or 34 L (8.9 gal)
Pump Speed:
2-Speed: 9 L/min & 15 L/min

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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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. 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.

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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4. Descriptions
4.1. Instrument Description
Figure 1. Instrument Descriptions
1. Temperature Controller (See section 4.2 for detailed operation)
2. Coolant Outlet/Inlet (Sold Separately)
3. Temperature Sensor
4. Pyrex Glass Bath
5. Heating Coil
6. Viscometer Port
7. Thermometer/Thermocouple Port
All wetted parts are corrosion resistant 300 series stainless steel.
4.2. Accessories for Running Tests
Glass Capillary Viscometer Tubes for KV1000
Koehler offers a full selection of glass capillary kinematic viscometers, which are ordered separately from the KV1000
instrument, for measuring kinematic viscosity of liquid products as per ASTM D445 and related standard test methods. All
types of viscometers conform to ASTM D445 and related methods for glass capillary kinematic viscometers. All viscometers
with part numbers for the automatic test are listed below. The constant for each individual viscometer is written on the
Certificate of Calibration, included in the packaging.
IMPORTANT: It is recommended when using a newviscometer for the first time to run a test with suitable standard. Different
locations may result in a slightly different constant.
6
5
4
3
2
1
7

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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Cannon®-Fenske Routine Viscometers
The Cannon®-Fenske Routine viscometer is a rugged and inexpensive viscometer that works well if the sample is transparent or
translucent.
•For kinematic viscosity of transparent liquids up to 20,000cSt.
•Requires a sample of approximately 7mL.
Cannon®-Fenske Opaque Viscometers
The reverse flow viscometers are designed for testing opaque liquids. These viscometers wet the timing section of the
viscometer capillary only during the actual measurement and must be cleaned, dried and refilled before a repeat
measurement can be made. By contrast, other viscometer types commonly used to measure transparent liquids allow the
sample to be repeatedly drawn up into the capillary, permitting duplicate measurements.
•For measurement of transparent and dark liquids having kinematic viscosities of up to 20,000cSt
•Requires a sample of approximately 12mL.
Ubbelohde Viscometers
Ubbelohde viscometers measure transparent liquids, and unlike the Cannon®-Fenske Routine viscometers, they maintain
the same viscometer constant at all temperatures. This is advantageous when samples are to be measured at different
temperatures.
•Suspended-level type viscometers are for transparent liquids of up to 100,000cSt
•Requires a sample volume of approximately 11mL.
Viscometer Holders
Koehler offers a wide range of viscometer holders for use with the KV1000 instrument. The correct holder must be used
with the corresponding viscometer tube for proper operation:
ASTM Thermometers
Part Number
ASTM Designation
Range
Part Number
ASTM Designation
Range
250-000-28C
Kinematic Viscosity at 27.8°C
36.6 to
39.4°C
250-000-28F
Kinematic Viscosity at 100°F
97.5 to
102.5°F
250-004-28C
28C Certified at ASTM
specified test points of 0, 37.8,
39°C
36.6 to
39.4°C
250-004-28F
28F Certified at ASTM
specified test points of 32, 100,
102°F
97.5 to
102.5°F
250-000-29C
Kinematic Viscosity at 54.4°C
52.6 to
55.4°C
250-000-29F
Kinematic Viscosity at 130°F
127.5 to
132.5°F
250-004-29C
29C Certified at ASTM
specified test points 0, 54.4,
55°C
52.6 to
55.4°C
250-004-29F
29F Certified at ASTM
specified test points 32, 130,
132°F
127.5 to
132.5°F
250-000-30F
Kinematic Viscosity at 210°F
207.5 to
212.5°F
250-004-30F
30F Certified at ASTM
specified test points 32, 210,
212°F
207.5 to
212.5°F
Viscometer Tube Type
Corresponding Holder
Cannon®-Fenske Routine
Cannon®-Fenske Opaque
K23381
Ubbelohde
BS/U-Tube
K23382
Reverse Flow
K23383

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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Cannon-Fenske Routine Viscometers
Cannon-Fenske Opaque Viscometers
Part Number
Size
Approximate
Constant,
cSt/s
Kinematic
Viscosity
Range, cSt
Part Number
Size
Approximate
Constant,
cSt/s
Kinematic
Viscosity
Range, cSt
378-025-C01
25
0.002
0.5 to 2
378-025-C02
25
0.002
0.4 to 2
378-050-C01
50
0.004
0.8 to 4
378-050-C02
50
0.004
0.8 to 4
378-075-C01
75
0.008
1.6 to 8
378-075-C02
75
0.008
1.6 to 8
378-100-C01
100
0.015
3 to 15
378-100-C02
100
0.015
3 to 15
378-150-C01
150
0.035
7 to 35
378-150-C02
150
0.035
7 to 35
378-200-C01
200
0.1
20 to 100
378-200-C02
200
0.1
20 to 100
378-300-C01
300
0.25
50 to 250
378-300-C02
300
0.25
50 to 250
378-350-C01
350
0.5
100 to 500
378-350-C02
350
0.5
100 to 500
378-400-C01
400
1.2
240 to 1,200
378-400-C02
400
1.2
240 to 1,200
378-450-C01
450
2.5
500 to 2,500
378-450-C02
450
2.5
500 to 2,500
378-500-C01
500
8
1,600 to 8,000
378-500-C02
500
8
1,600 to 8,000
378-600-C01
600
20
4,000 to 20,000
378-600-C02
600
20
4,000 to 20,000
378-650-C01
650
45
9,000 to 45,000
378-650-C02
650
45
9,000 to 45,000
378-700-C01
700
100
20,000 to
100,000
378-700-C02
700
100
20,000 to
100,000
Ubbelohde Viscometers
Part Number
Size
Approximate
Constant,
cSt/s
Kinematic
Viscosity
Range, cSt
Part Number
Size
Approximate
Constant,
cSt/s
Kinematic
Viscosity
Range, cSt
378-000-C03
0
0.001
0.3 to 1
378-02B-C03
2B
0.5
100 to 500
378-00C-C03
0C
0.003
0.6 to 3
378-003-C03
3
1
200 to 1,000
378-00B-C03
0B
0.005
1 to 5
378-03C-C03
3C
3
600 to 3,000
378-001-C03
1
0.01
2 to 10
378-03B-C03
3B
5
1,000 to 5,000
378-01C-C03
1C
0.03
6 to 30
378-004-C03
4
10
2,000 to 10,000
378-01B-C03
1B
0.05
10 to 50
378-04C-C03
4C
30
6,000 to 30,000
378-002-C03
2
0.1
20 to 100
378-04B-C03
4B
50
10,000 to
50,000
378-02C-C03
2C
0.3
60 to 300
378-005-C03
5
100
20,000 to
100,000

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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4.3. Temperature Controller
Figure 2. Temperature Controller (Front)
Item descriptions
1. Safety Set Indicator Knob
2. Safety Set Reset Button
3. Preset Temperature Buttons
4. Display
5. Select/Set Knob
6. Power ON/OFF Button
Figure 2. Temperature Controller (Back)
7. Pump Speed Switch
8. Circuit Breaker / AC Power Switch
9. AC Input

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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4.4. Recommended Accessories
Withdrawal Bulb (K22090)
Used to pull sample into viscometer tube
Rubber Stopper, pk/12 (K23311)
To hold sample after it is pulled through the viscometer prior to test
Cooling Coil (K23377-01000)
Permits circulation of water or refrigerated coolant for operation at near ambient temperatures. Installs in top plate. Hose-barb inlet
and outlet connections for water or refrigerated coolant are located at the top of the bath. Secure with copper wire to prevent the
tubing from disengaging from the connection.
5. Operation
5.1. Bath
NOTE: Ensure the Borosilicate glass jar is not cracked or
broken. DO NOT USE the jar if there is any damage.
Fill the bath with the appropriate heat transfer fluid based
upon the testing temperature. Fill the bath with the
medium to 2" (5 cm) from the top of the bath to allow room
for fluid expansion. This will provide the proper depth for
immersing the viscometers and allow for thermal
expansion.
5.2. Power
WARNING: 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 would be void.
An IEC power cord is provided with the KV1000 Bath. This power cord should be plugged into the IEC receptacle on the rear of
the controller and then plugged into a properly grounded outlet. Make sure that the power outlet is the same voltage and frequency
indicated on the identification label on the back of the Controller.
The use of an extension cord is not recommended. However, if one is necessary, it must be properly grounded and capable of
handling the total wattage of the unit. The extension cord must not cause more than a 10% drop in voltage to the Circulator.
Once the unit has been connected to an appropriate electrical outlet, place the Circuit Breaker/Power Switch on the rear of the
Controller in the ON position. Four decimal points (….) will appear on the digital display. DO NOT place the Power Switch on the
front of the Controller ON until the Safety Set has been adjusted to the desired temperature.
Indicated Voltage
Volts/Phase/Frequency
Operational
Voltage Range
Phase
Frequency
100/1/60
90 to 100V
Single
60
100/1/50
90 to 100V
Single
50
120/1/60
110 to 130V
Single
60
230/1/60
208 to 230V
Single
60
240/1/50
220 to 240V
Single
50
Testing
Temperature
Recommended Fluid
Below 4°C
Koehler recommends a suitable medium that will
not freeze like ethylene glycol. Do NOT use
distilled water. Use of a coolant may be
necessary.
4 - 50°C
Distilled water will be suitable
Above 50°C
Koehler supplies highly refined white technical oil
(Part # 355-001-001) that contains an oxidation
inhibitor to limit clouding at higher temperatures.
Above 110°C
Koehler supplies highly refined white technical oil
(Part # 355-001-001) that contains an oxidation
inhibitor to limit clouding at higher temperatures.

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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After filling the reservoir with fluid, you must set the Safety Set and the Software High Limit as well as your desired control set
point.
5.3. Circulator Pump
The HIGH or LOW speed selection switch on the rear panel of the Controller is used to select pump speed. LOW is adequate for
most applications and provides quieter pumping. HIGH is recommended where temperature varies frequently and there is a need
for fast recovery or when pumping to multiple external units.
Speed Selection
Maximum Pump
Outlet Ratings
HIGH
16 LPM/2.6 psi
LOW
9 LPM/1.5 psi
Line Frequency = 50/60Hz
The data in the table above are based on the following criteria:
1. Maximum pump outlet flow rate is measured in liters per minute (LPM) with no restriction on the pump outlet
2. Maximum pump outlet pressure is measured in pounds per square inch (PSI) at no flow.
3. Water was used as the circulation fluid. Water has a viscosity of one centistoke. High viscosity or low-density fluids will change
these figures.
5.4. Temperature Controller Operation
Setting the Safety Set Point
The Safety Set feature automatically disconnects Controller power to the heater and pump in the event that the reservoir liquid
level drops too low or the Controller fails. The Safety Set is user adjustable between approximately 40° and 210°C. It should be
set at least 5°C higher than the Software High Limit temperature.
1. Use a flat blade screwdriver to rotate the Safety Set Indicator Knob to the desired temperature. Do NOT force the knob beyond
the stops at either end of the temperature value range.
2. Once the Safety Set temperature has been set, turn power to the Controller ON by pressing the Power Switch on the front of
the controller. The pump will begin operating, the display will flash the current temperature set point (tx.xx), the °C LED will light,
and the current bath temperature will appear on this display. Pump speed selection is made using the Pump Speed Selection
Switch on the rear of the Controller.
If power is disrupted because the Safety Set temperature was exceeded, place the Circuit Breaker/Power Switch in the OFF
position, press the Safety Set Reset Button, correct the problem (low liquid level, incorrect Safety Set temperature, etc.), and then
restore power.
Activation of the Safety Set during normal operation will display a fault (FLt 3) on the readout.
Selecting Temperature Units
The control set point and actual bath temperatures may be displayed in either °C or °F. The factory-default is °C.
To change from °C to °F, place the Circuit Breaker/Power Switch on the rear of the Controller in the OFF position and then press
and hold the P2 Button while turning the power back ON.
To change from °F to °C, place the Circuit Breaker/Power Switch in the OFF position and then press and hold the P3 Button while
turning the power back ON.
NOTE: When the temperature display units are changed, the Software High Limit value and all temperature presets revert to the
factory-default values. If a calibration value has been entered, the value will be retained.

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Setting the Software High Limit
This feature provides additional safety and protection by allowing a selectable upper temperature limit set point. To avoid an
unwanted shutdown during regular operation, the high limit value should be set at least 5°C higher than the selected control
temperature
1. To set the Software High Limit temperature set point, press the P2 and P3 keys simultaneously and repeat until (Hxxx) appears
on the display. This is the current Software High Limit value. It is factory set at 152°C.
2. To change the displayed value, press and turn the Select/Set Knob until the desired Software High Limit set point value is
displayed. A clockwise rotation increases the value; a counterclockwise rotation decreases the value. Press the Select/Set Knob
a second time to accept the new value and return to normal operation.
If the Software High Limit value meets or exceeds the control temperature set point, (EH1) will flash on the display. If this occurs,
enter a higher value for the Software High Limit or reduce the control temperature set point.
If the actual bath temperature reaches the Software High Limit Set Point, (FLt1) will flash on the display. Should this occur, the
Controller will automatically remove power from the heater. The pump will continue to operate.
Once the problem is corrected (bath temperature is reduced or Software High Limit value is increased), press the Power button to
clear the message.
Controller Display Messages:
Display
Description
Action Required
…….
Standby Mode
Normal - Indicates that the Circuit Breaker/Power Switch is ON and the
Controller Power Switch is OFF
Tx.xx
Power up self test
Normal- Appears momentarily at startup
oCx.x
Calibration offset value
Normal- Current calibration offset value; refer to section 6.1
Hxxx
Software High Limit Value
Normal- Current Software High Limit value; refer to section 5.6
Axxx
Auto refrigeration set point
value
Normal- Current Auto-Refrigeration set point; refer to section 5.10
(Appears only on Refrigerating/Heating Circulators)
E-H1
Software High limit set point
too low
Error- The value entered is below the control temperature set point.
Refer to Setting Software High Limit, section 5.6
FLt 1
Software High limit value
exceeded
Error- Set a Software High Limit value higher, then turn main power to
the unit OFF and back ON; refer to section 5.6
FLt 2
EEP ROM reset
Error- Turn Circuit Breaker/Power Switch OFF, hold P3 Button, and then
turn the Circuit Breaker/Power Switch back ON
FLt 3
Safety Set Temperature
exceeded
Error - Check fluid level. Check fluid temperature and set point. Ensure
that OTP set point is higher than fluid set point, otherwise increase to
maximum. Turn Circuit Breaker/Power Switch OFF, press Safety Set
Reset Button, and then turn the Circuit Breaker/Power Switch back ON
FLt 4
Heating Triac Failure
Error- Service required
FLt 5
Probe Failure
Error- Service required
FLt 6
i2c errorcommunication failure
to modulation board
Error- Service required (Appears only on Refrigerating/Heating
Circulators)
Setting the Set Point Temperature
1. Press and release the Select/Set Knob. The decimal point flashes to indicate that the set point temperature can be changed.
2. Turn the Select/Set Knob until the desired temperature set point is displayed. A clockwise rotation increases the setting; a
counterclockwise rotation decreases the setting.
3. Press the Select/Set Knob a second time to accept the displayed value. The decimal point stops flashing and the display will
indicate the actual bath temperature. Allow sufficient time for the bath to stabilize at the desired temperature before making any
adjustments to set point temperature.
NOTE: The unit will automatically accept the displayed set point after approximately 10 seconds of inactivity, even if the Select/Set
Knob was not pressed.

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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The set point temperature may be checked at any time by pressing the Select/Set Knob. If the set point temperature cannot be
raised, it is possible that the Software High Limit value is set lower than the desired control temperature set point. Reset the
Software High Limit value to 5°C or more above the desired set point temperature.
User Defined Preset Temperatures
1. With the unit on, press the desired Preset Button —P1, P2, or P3. The LED associated with the selected Preset Button will
begin to flash.
2. Rotate the Select/Set Knob to the desired temperature set point.
3. Press the selected Preset Button a second time to enter the new set point. The new set point temperature will not be saved
unless the Preset Button is pressed.
4. The LED associated with Preset Button lights continuously whenever that preset value is controlling bath temperature. If more
than one Preset Button is set at a given temperature set point, the LED associated with all Preset Buttons with that set point will
light.
Local Lockout Feature
This feature enables the user to lock all controls on the controller. While the feature is activated, the unit will remain running at the
current settings.
To activate the local lockout feature:
1. Press and hold the Select/Set Knob for 10 seconds. Once locked, the screen will read LLo. When locked, the set point decimal
point will not flash as usual.
2. Press and hold the Select/Set Knob again for 10 seconds to unlock the controls. Once unlocked, the screen will read Can.
Calibration
Calibration allows the user to match the Controller’s bath temperature display to an external reference thermometer. Calibration
is performed as follows:
1. Set the desired operating fluid temperature set point and allow temperature to stabilize.
2. Press the P2 and P3 simultaneously and release and repeat until the display reads (oCx.x). Press P1 and hold until (Cal) is
displayed. This will take about 2 seconds.
3. At one second intervals, the displayed value will alternate between the actual bath fluid temperature and the current offset value,
which is the difference between the factory calibration setting and the user’s reference temperature sensor. The maximum offset
is 0.9C from factory calibration.
4. To change the calibration offset value, rotate the Select/Set Knob until the display matches the reading on the reference
temperature sensor. The display will continue to alternate between the offset value and the calibrated display temperature.
5. Press the Select/Set Knob or the P1 Button to accept the entered value. When the new calibration is stored and the mode is
exited, (DONE) will appear on the display.
NOTE: The displayed offset value will also be accepted if there no activity for 20 seconds.
5.5. Starting a Test
Before running a test, make sure the unit is level. Otherwise, the results will be affected.
1. Install the appropriate ASTM thermometer in the cover plate of the bath.
2. Set the desired operation temperature using the temperature control (See Section 4.3).
IMPORTANT: Allow the bath AND the sample enough time to reach the temperature before starting measurements. Allow 10-15
minutes for the bath to equilibrate. Refer to appropriate methods (Section 1.2).

KV1000 Constant Temperature Kinematic Viscosity Bath
Operation and Instruction Manual
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6. Safety Features
The KV1000 Kinematic Viscosity Bath is equipped with several safety and protection features, which are described in the following
sections.
6.1. Over-Temperature Protection
The KV1000 Kinematic Viscosity Bath is equipped with Over-temperature Protection (OTP) circuitry, which prevents the unit from
exceeding unsafe operating temperatures. If the unit cannot maintain the set point temperature and begins to decline, the OTP
circuitry may have been activated. Please follow these steps.
1. Turn off the unit power switch and disconnect the line cord.
2. Determine the source of the problem and correct the situation
3. Restart the unit. Monitor the operations to ensure that the unit is operating properly. If you are still experiencing trouble, please
contact Koehler technical service for assistance.
6.2. Over-Power Protection
The KV1000 Kinematic Viscosity Bath 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.
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, then please do not hesitate to
contact the Koehler technical service department.
7.1. Routine Maintenance
Heater
The heater should be kept clean. If deposits build up on the heater, they may be removed by scrubbing with a non-metallic (plastic)
abrasive pad. Do not use steel wool.
Pump Motor
The pump bearings are permanently lubricated with high-temperature silicone grease and do not require additional lubrication.
Should the bearings become noisy, replacement of the entire pump motor is recommended. This will reduce repair labor costs
and retain fluid pumping reliability. A replacement pump and motor mounting kit is available (see Section 7.2- Replacement Parts).
Cleaning
Only mild detergents and water or an approved cleaner should be used on the painted and stainless steel surfaces of the Circulator.
Do not allow cleaning liquids or sprays to enter the Controller vents. A concentrated bath cleaner is available that can be used to
remove mineral deposits from the reservoir (see Section 7.2- Replacement Parts).
Maintaining Clear Bath Water
When water is used as the bath fluid, optimal conditions are present for algae growth. To prevent algae contamination and minimize
the need for draining the reservoir, an algicide should be used. Do NOT use chlorine bleach in the reservoir or on any pump parts.

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7.2. Replacement Parts
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.
9.1. Unit Will Not Operate (no heat, cooling, or pumping)
•Check that the power cord is plugged into an operating electrical outlet.
•Check that the Circuit Breaker/Power Switch is on.
•Check that the Controller Power Switch is ON.
•Check that the Safety Set temperature is higher than the control temperature set point.
•Turn power off, press the Safety Set Reset button and restore power.
8.2. No Pumping
•Check the fluid level of the bath to be sure the pump head is covered with fluid.
•If the pump motor does not spin, verify that the Pump Speed Switch is either in the HIGH or LOW position. If it is in the middle,
the pump will not receive power.
•Check the pump impeller for obstructions (it should turn freely).
8.3. Slow or Insufficient Pumping
•Low line voltage, particularly when the heater is on
•A hose diameter that is too small can restrict pumping (closed loop applications)
•Kinks in hose
•Too high of a fluid viscosity
9. Service
Under normal operating conditions and with routine maintenance, the KV1000 Kinematic Viscosity Bath should 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: ______________________
Part Number
Replacement Part
199
Port Cover
322-001-001
Borosilicate Glass Bath Jar, 12 x 12 in.
322-001-003
Borosilicate Glass Bath Jar, 12 x 18 in.