Koehler K45850 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
K45850, K45858, K45859
Loss on Heat / Thin Film Oven

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -1-

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -2-
Table of Contents
1Introduction......................................................................................................................3
1.1 Koehler’s Commitment to Our Customers .................................................................................................3
1.2 Recommended Resources and Publications.............................................................................................3
1.3 Instrument Specifications...........................................................................................................................3
2Safety Information and Warnings...................................................................................4
3Getting Started.................................................................................................................4
3.1 Packing List................................................................................................................................................4
3.2 Unpacking ..................................................................................................................................................4
3.3 Installation ..................................................................................................................................................4
4Operation..........................................................................................................................5
4.1 Control Panel Description...........................................................................................................................5
5Maintenance .....................................................................................................................5
5.1 Preventative Maintenance..........................................................................................................................5
5.2 Maintenance...............................................................................................................................................5
6Troubleshooting / Service...............................................................................................6
6.1 Replacing the Digital Control Unit ..............................................................................................................6
6.2 Replacing the Overheat Thermostat ..........................................................................................................6
6.3 Recalibration ..............................................................................................................................................6
6.4 Replacing the Motor ...................................................................................................................................6
7Service ..............................................................................................................................6
8Storage..............................................................................................................................6
9Warranty............................................................................................................................7
10 Returned Goods Policy....................................................................................................7
Notes ......................................................................................................................................8
Notes ......................................................................................................................................9

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -3-
1 Introduction
The K4585X dual purpose oven is designed to
determine the loss in weight of bitumen and flux oils
(loss on heating test) and the effect of heat and air
on asphaltic materials (thin film test). The unit is
heavily insulated and has a double glass door for
viewing the test chamber thermometer and samples.
Temperature is controlled at 163°C ± 1°C by means
of a variable temperature controller and thermostat.
Two rotating platforms are supplied with each oven:
one accepts nine standard penetration cups for the
loss on heating test, the other accepts two 140mm
diameter test pans for the thin film test. The
platforms are rotated at 5 to 6 rpm by an external
motor.
This manual provides important information
regarding safety, technical reference, installation
requirements, operating condition specifications,
user facility resource requirements, and operating
instructions for the K4585X. 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: [email protected]
ASTM Publication:
ASTM D6: Standard Test Method for Loss
on Heating od Oil and Asphaltic
Compounds
ASTM D1754: Standard Test Method for
Effects of Heat and Air on Asphaltic
Materials (Thin-Film Oven Test)
2. American Association of State Highway and
Transportation Officials (AASHTO)
444 N Capitol St. NW –Suite 249
Washington, DC 20001
AASHTO Publication:
AASHTO T47: Loss on Heating of Oil
and Asphaltic Compounds
AASHTO T179: Effect of Heat and Air
on Asphalt Materials
1.3 Instrument Specifications
Model:
K45850
K45858
K45859
Electrical
Requirements:
115V 60Hz
220-240V 50Hz
220-240V 60Hz
Temperature Range:
Ambient to 356°F
(180°C)
Pre-Set
Temperature:
163°C ± 1°C
Internal Chamber
Dimensions:
38 (H) x 52 (W) x 46 (D)
cm
External
Dimensions:
57 (H) x 87 (W) x 46 (D)
cm
Net Weight:
44 kg

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -4-
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.
STAY ALERT! Do not operate this unit while
under the influence of medication, alcohol, or
drugs.
Equipment Modifications and Replacement
Parts: Any modification or alteration of this
equipment from that of factory specifications is not
recommended and 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.
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
K4585X Loss on Heat / Thin Film Oven
Additional Accessories (purchased separately):
388-001-003 Sample Container for D6
K17000 Thin Film Oven Pan, aluminum D1754
K17090 Thin Film Oven Pan, stainless steel
D1754
3.2 Unpacking
Carefully unpack and place the instrument and
accessories in a secure location. Inspect the unit 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 Installation
Equipment Placement: Place the instrument on a
firm, level table in a secure, well ventilated area or
in a vented hood, because of the release of
material from samples which are highly volatile, or
which may contain potentially hazardous material.
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.
Mains Supply. Check the voltage shown on the
serial plate adjacent to the cable entry. Connect
the BROWN wire of the mains lead to the ‘L’ live
pin, the BLUE wire to the ‘N’ neutral pin and the
GREEN-YELLOW wire to the ‘E’ earth pin.
240V Units. Each unit comes supplied
with a mains connection lead already fitted
with a correctly rated fuse. The fuse rating
and other details for each unit are shown
on the voltage plate riveted to the back of
the unit. It is important that, if the fuse
needs to be replaced, it must ONLY be
replaced with one of the correct rating.
110V Units. Are supplied with a cable but
without a plug or fuse. These units should
be wired in by a suitably qualified
electrician to the following:
BROWN wire to the ‘L’ live pin
BLUE wire to the ‘N’ neutral pin
GREEN-YELLOW wire to the ‘E’ earth pin.
WARNING: Do not connect the oven to a DC
Mains Supply or serious damage will occur!
The Following Precautions should be observed:
1. Mop up any spilled liquid from the
chamber floor or damage to the element
may result.
2. Position away from direct sunlight or
radiant heat sources.
3. Sample trays should not be placed on the
floor of the unit.

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -5-
4 Operation
1. Position the required table to the motor shaft
inside the chamber and secure using the 3/16”
Allen key provided.
2. Attach the correct thermometer (see ASTM
specification for loss on heat test) to the clip on
the table shaft, so that the bulb is 0.25” above
the shelf.
3. Switch on the mains switch situated on the
control panel.
4. Switch on the motor via the switch on the control
panel.
5. The oven is pre-set to 163°C. The overheat
thermostat has been set 5°C above the main
digital controller set point.
6. Digital Controller CAL 3200. The operational
parameters of the controller have been factory
set to control the heating performance
requirements as per ASTM D1754. To check
and to change the set point press the * button to
display the current set point. Press and hold in
the * button and use the up / down buttons to
change the value to the required set point.
4.1 Control Panel Description
5 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.
5.1 Preventative Maintenance
Ensure that the unit is maintained in a clean, dry
condition and when not in use stored in a
normal warm atmosphere.
Minimum recommendation, every six months:
1. Check operation of the overheat protection
by:
Allow the temperature to stabilize. Once the
desired temperature has been reached and
stabilized with CONTROL thermostat, adjust
the OVERHEAT dial (RED CENTER CAP)
Turn COUNTERCLOCKWISE until the red
lamp just comes on. Now slowly turn the
spindle clockwise until the red lamp just
extinguishes. Increase the digital control set
point to a temperature 5 –10 degrees higher
than the overheat setting. Within a few
minutes the red overheat lamp will come on
indicating that the system is working
correctly. After this check, reset the digital
control to 163°C.
2. Carry out an electrical safe check (Portable
Appliances) using an appropriate appliance
tester operated by a competent person.
3. Check the condition of the mains lead and
the fuse rating is correct. Refer to the serial
plate on the back of the oven.
5.2 Maintenance
To check or replace any electrical components,
remove the end panel from the left hand side of
the unit.
Take normal precautions not to allow water to
come into contact with electrical components. The
outer surfaces can be cleaned with a warm, damp,
soapy cloth or any proprietary cleaner suitable for
a painted surface (do not use solvents or harsh
abrasives). The work chamber may also be
cleaned as above.

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -6-
6 Troubleshooting / Service
6.1 Replacing the Digital Control Unit
1. Disconnect from the mains supply before
starting any work.
2. Remove the side panel at the left hand side of
the unit.
3. Carefully remove the terminal block on the
controller, taking note of the positioning of the
wires. This is done by pulling back the small
green locking tab and lifting the terminal block
off its pins.
4. Remove the plastic clip holding the controller
in position.
5. Withdraw the controller. Fit the new controller
and re-assemble in the reverse order.
6. Check all wiring before refitting the side panel.
6.2 Replacing the Overheat Thermostat
1. Follow steps 1 and 2 above.
2. From inside the chamber, locate the
thermostat bulb on the left hand side of the
chamber and remove the retaining clip. Take
note of the wires to the thermostat head and
remove the wires.
3. Remove the dial knob by first pressing out the
center cap which will reveal the locknut. Hold
the know tightly and slacken the locknut.
Gently tap the knob and remove it from the
spindle. Remove the two retaining screws on
the front panel and withdraw the thermostat
assembly. Fit the new unit in the reverse order.
Position the knob so that the arrow is
approximately at 30 degrees. Temporarily
tighten the locknut and follow recalibration
instructions.
6.3 Recalibration
1. Insert a suitable thermometer or thermocouple
via the top vent or attached to the motor shaft.
2. Set the digital control to 163°C and ensure that
the overheat dial is set to maximum.
3. Allow the temperature to stabilize.
4. Slowly turn the overheat dial down until the red
light illuminates. Increase the dial setting
upscale until the light just extinguishes. Ensure
that pointer on the dial lines up with the set
point (approximately 165°C). This can be
achieved by firstly gripping the knob tightly
and slackening the locknut. Ensure that the
knob is loose on the spindle (may require a
gentle tap to free it). Align the pointer to
165°C and tighten the lock nut. Refit the
center cap.
6.4 Replacing the Motor
Disconnect from the mains supply before starting
work!
1. Remove the table and table-connecting
shaft from the motor.
2. Remove the cowl from around the motor.
3. Disconnect the wires from the motor.
4. Remove the 4 retaining nuts holding the
motor in place.
5. Fit the replacement motor, ensuring that
the shaft is central in the top vent.
Reconnect the wires and refit the cowl.
7 Service
Under normal operating conditions and with
routine maintenance, the K4585X Loss on Heat /
Thin Film Oven 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:
8 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.

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -7-
9 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.
10 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 with 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.

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -8-
Notes

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual -9-
Notes