Barnstead FB1300 Operating instructions

INSTRUCTION MANUAL
Furnace
Type: FB1400
Model: FB1410 M
Brand:

LT1050X2 • 12/29/99 Serial Number
BARNSTEAD|THERMOLYNE CORPORATION
Type FB1300 & FB1400
Furnaces
OPERATION AND REPAIR MANUAL
AND PARTS LIST
SERIES 1049 & 1050
Model Numbers
FB1310M, FB1310M-26, FB1314M, FB1315M, FB1318M,FB1310M-33
FB1410M, FB1410M-26, FB1414M, FB1415M, FB1418M, FB1410M-33

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Table of Contents
Safety Information ..............................................................................................................................................3
Important Information....................................................................................................................................3
Warnings ......................................................................................................................................................4
Introduction..........................................................................................................................................................5
Intended Use ................................................................................................................................................5
General Usage..............................................................................................................................................5
Principles of Operation ................................................................................................................................5
General Specifications ........................................................................................................................................6
Declaration of Conformity ............................................................................................................................7
Installation ..........................................................................................................................................................9
Unpacking ....................................................................................................................................................9
Site Selection................................................................................................................................................9
Electrical Connections..................................................................................................................................9
Operation ..........................................................................................................................................................10
Power Switch..............................................................................................................................................10
Cycle Light..................................................................................................................................................10
Door Safety Switches ................................................................................................................................10
Digital Readout ..........................................................................................................................................10
Push To Set Temperature Button................................................................................................................11
Temperature Adjustment Knob....................................................................................................................11
Digital Control..............................................................................................................................................11
Sensor Break Protection ............................................................................................................................12
Furnace Loading ..............................................................................................................................................13
Preventive Maintenance....................................................................................................................................14
Troubleshooting ................................................................................................................................................15
Maintenance and Servicing ..............................................................................................................................16
To Replace Heating Element......................................................................................................................16
To Replace Thermocouple..........................................................................................................................19
To Replace Insulation ................................................................................................................................21
To Replace Door Switches ........................................................................................................................22
To Replace Solid State Relay ....................................................................................................................23
To Replace PC Board (Controller)..............................................................................................................24
Wiring Diagram..................................................................................................................................................25
Exploded View ................................................................................................................................................26
Replacement Parts List ....................................................................................................................................27
Ordering Procedures ........................................................................................................................................28
One Year Limited Warranty ..............................................................................................................................29

3
Important Information
This manual contains important operating and
safety information. You must carefully read and
understand the contents of this manual prior to
the use of this equipment.
Your Thermolyne FB1300 Model or FB1400
Model Furnace has been designed with function,
reliability, and safety in mind. It is your responsi-
bility to install it in conformance with local elec-
trical codes. For safe operation, please pay
attention to the alert signals throughout the man-
ual.
Warnings
To avoid electrical shock, this furnace must:
1. Use a properly grounded electrical outlet
of correct voltage and current handling
capacity.
2. Be disconnected from the power supply
before servicing.
3. Have the door switch operating properly.
To avoid burns:
1. “Caution: Hot Surface. Avoid Contact.”
Do not touch the exterior or interior sur-
faces of the furnace during use or for a
period of time after use.
To avoid personal injury:
1. Do not use in the presence of flammable
or combustible materials — fire or explo-
sion may result. This device contains
components which may ignite such
material.
2. Refer servicing to qualified personnel.
Safety Information
Warning
Warnings alert you to a
possibility of personal injury.
Caution
Cautions alert you to a
possibility of damage to the
equipment.
Note
Notes alert you to pertinent facts
and conditions.
Hot Surface
Hot surfaces alert you to a
possibility of personal injury if
you come in contact with a
surface during use or for a
period of time after use.
Alert Signals

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Please note the following WARNINGS:
WARNING
This warning is presented for compliance with California Proposition 65 and other regulato-
ry agencies and only applies to the insulation in this product. This product contains refracto-
ry ceramic, refractory ceramic fiber or fiberglass insulation, which can produce respirable
dust or fibers during disassembly. Dust or fibers can cause irritation and can aggravate
preexisting respiratory diseases. Refractory ceramic and refractory ceramic fibers (after
reaching 1000°C) contain crystalline silica, which can cause lung damage (silicosis). The
International Agency for Research on Cancer (IARC) has classified refractory ceramic fiber
and fiberglass as possibly carcinogenic (Group 2B), and crystalline silica as carcinogenic to
humans (Group 1).
The insulating materials can be located in the door, the hearth collar, in the chamber of the
product or under the hot plate top. Tests performed by the manufacturer indicate that there
is no risk of exposure to dust or respirable fibers resulting from operation of this product
under normal conditions. However, there may be a risk of exposure to respirable dust or
fibers when repairing or maintaining the insulating materials, or when otherwise disturbing
them in a manner which causes release of dust or fibers. By using proper handling proce-
dures and protective equipment you can work safely with these insulating materials and
minimize any exposure. Refer to the appropriate Material Safety Data Sheets (MSDS) for
information regarding proper handling and recommended protective equipment. For addi-
tional MSDS copies, or additional information concerning the handling of refractory ceramic
products, please contact the Customer Service Department at Barnstead|Thermolyne
Corporation at 1-800-553-0039.
SAFETY INFORMATION

5
Intended Use
The FB1300 Model and FB1400 Model fur-
naces are general purpose laboratory and heat
treating furnaces. For optimum element life,
observe the following temperature ranges:
100°C (212°F) to 982°C (1800°F) for continuous
use, or from 982°C (1800°F) to 1100°C
(2012°F) for intermittent use. Continuous use is
operating the furnace for more than three
straight hours, and intermittent use is operating
the furnace for less than three hours.
The unit consists of a heating chamber and a
digital controller. See Figure 1 for the overall
shape and general features of the unit.
General Usage
Do not use this product for anything other than
its intended usage.
Principles of Operation
The furnace chamber is heated by a single
three section resistant heater which is embed-
ded in a refractory material. The chamber is
insulated with a ceramic fiber insulation. The
temperature is controlled by an electronic con-
trol which provides one temperature setting.
The temperature is measured by a thermocou-
ple and is registered on a digital display. For
safety, door switches are incorporated to
remove power from the heating elements when
the door is opened. The furnace is supported by
the control unit which also houses the electrical
connections.
Introduction

66
General Specifications
FB1300 Models
Dimensions: (handle not included)
Chamber: 4” W x 3.75” H x 4.5” D (10 x 9.5 x 11 cm)
Overall : 7.9” W x 13.2” H x 8.5” D (20 x 33.5 x 22 cm)
Weight: 15.4 lb. (7 kg)
Electrical Ratings:
Model # Volts Amps Watts Phase Frequency
FB1310M 220-240 4.4 1050 1 50/60
FB1310M-26 220-240 4.4 1050 1 50/60
FB1310M-33 220-240 4.4 1050 1 50/60
FB1314M 100 10.5 1050 1 50/60
FB1315M 120 8.8 1050 1 50/60
FB1318M 208 5.0 1050 1 50/60
Temperature: Operating Range (continuous): 982°C; (intermittent): 1100°C.
Environmental Conditions:
Operating: 17°C - 27°C; 20% - 80% relative humidity, non-condensing. Installation
Category II (over-voltage) in accordance with IEC 664. Pollution Degree 2 in
accordance with IEC 664. Altitude limit: 2,000 meters.
Storage: -25°C - 65°C; 20% - 80% relative humidity.
FB1400 Models
Dimensions: (handle not included)
Chamber: 5” W x 4.25” H x 6” D (13 x 11 x 15 cm)
Overall: 9.7” W x 15.4” H x 11.1” D (25 x 39 x 28 cm)
Weight: 23 lb. (10.4 kg)
Electrical Ratings:
Model # Volts Amps Watts Phase Frequency
FB1410M 220-240 6.3 1500 1 50/60
FB1410M-26 220-240 6.3 1500 1 50/60
FB1410M-33 220-240 6.3 1500 1 50/60
FB1414M 100 14.4 1500 1 50/60
FB1415M 120 12.5 1500 1 50/60
FB1418M 208 7.2 1500 1 50/60
Temperature: Operating Range (continuous): 982°C; (intermittent): 1100°C.
Environmental Conditions:
Operating: 17°C - 27°C; 20% - 80% relative humidity, non-condensing. Installation
Category II (over-voltage) in accordance with IEC 664. Pollution Degree 2 in
accordance with IEC 664. Altitude limit: 2,000 meters.
Storage: -25°C - 65°C; 20% - 80% relative humidity.

7
Declaration of Conformity
Barnstead|Thermolyne hereby declares under its sole
responsibility that this product conforms with the techni-
cal requirements of the following standards (-33 models
only):
EMC: EN 50081-1 Generic Emission Standard;
EN 50082-1 Generic Immunity Standard.
Safety: EN 1010-1-92 Safety requirements for
electrical equipment for
measurement,control and
laboratory use; Part I:
General Requirements
EN 1010-2-010 Part II: Particular requirements
for laboratory equipment for the
heating of materials
per the provisions of the Electromagnetic Compatibility
Directive 89/336/EEC, as amended by 92/31/EEC and
93/68/EEC, and per the provisions of the Low Voltage
Directive 73/23/EEC, as amended by 93/68/EEC.
The authorized representative located within the
European Community is:
Electrothermal Engineering, Ltd.
419 Sutton Road
Southend On Sea
Essex SS2 5PH
United Kingdom
Copies of the Declaration of Conformity are available
upon request.
GENERAL SPECIFICATIONS

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Figure 1: Front and Back Views
Thermocouple
Spec. Plate
Furnace Chamber
Power Switch
Push to Set
Temperature
Button
Setpoint
Temperature
Adjustment
Cycle Light
Digital Readout

9
Unpacking
Unpack furnace from the box and remove
packing material from inside furnace cham-
ber. The furnace is supplied with a three wire
cord and plug.
Site Selection
Install furnace on a sturdy surface and allow
space for ventilation. The furnace should be
installed at least six inches away from any
combustible material.
Electrical Connections
The electrical specifications are located on
the specification plate on the back of the fur-
nace. Consult Barnstead/Thermolyne if your
electrical service is different than those listed
on the specification plate. Prior to connecting
your furnace to your electrical supply, be sure
the ON/OFF switch is in the OFF position.
Installation
Warning
Do not mount on a surface of
flammable material. The furnace
should be installed at least six
inches away from any com-
bustible material.
Warning
Use a properly grounded electri-
cal outlet of correct voltage and
current handling capacity.

10
Figure 2: Digital Control
Power Switch
When power is switched ON, the On/OFF
power switch will illuminate and the digital dis-
play will illuminate.
Cycle Light
The amber cycle light will illuminate whenever
the power is being applied to the heating ele-
ments. The cycle light will flicker on/off as fur-
nace reaches setpoint.
Door Safety Switches
The door safety switches remove power from
the heating elements when the door is opened.
Open and close the door a few times; note that
the amber CYCLE light will be out when door is
open. This check must be done when furnace is
heating or when cycle light is illuminated. If this
condition is not true, consult the
Troubleshooting section before proceeding.
Digital Readout
The digital readout continuously displays cham-
ber temperature unless the Push To Set
Temperature button is depressed. Then setpoint
temperature is displayed.
Operation
Warning
Do not use in the presence of
flammable or combustible mate-
rials — fire or explosion may
result. This device contains
components which may ignite
such material.
To avoid electrical shock, this
furnace must have the door
switch operating properly.
Hot Surface
Caution: Avoid Contact. Do not
touch the exterior or interior sur-
faces of the furnace during use
or for a period of time after use.

11
Push To Set Temperature
Button
When this button is depressed, the digital dis-
play will indicate setpoint temperature. When
the button is released, the actual chamber tem-
perature is displayed.
Temperature Adjustment Knob
Turning this knob clockwise will increase set-
point temperature. Turning the knob counter-
clockwise will decrease temperature.
Digital Control
This digital controller provides accurate control
at one single temperature setting. To set tem-
perature, simply:
1. Turn Power switch ON.
2. While depressing the Push To Set
Temperature button, turn the tempera-
ture knob until you reach the desired
setpoint temperature as indicated on
digital display.
3. Release the Push To Set Temperature
button.
The digital display will now indicate the actual
chamber temperature. The furnace will heat to
the new setpoint temperature. The CYCLE light
will remain on until the furnace temperature is
within 1°C of the setpoint temperature; then the
CYCLE light will flicker on and off as the con-
troller maintains the setpoint temperature.
OPERATION
Note
If at any time the Temperature
Adjustment knob is turned in
either direction, the setpoint will
change, even if the Push To Set
Temperature button is not
depressed. To view the current
setpoint temperature, depress
the Push To Set Temperature
button.

12
Sensor Break Protection
This controller provides sensor break protec-
tion in the event the thermocouple opens. If an
open thermocouple condition occurs, the digital
display will indicate 5 degrees or less and the
power to the heating element will be shut off
(CYCLE light will extinguish).
OPERATION

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•For best results of furnace loading, use
less than two-thirds of any dimension of
the chamber. Maintain a 3/4" clearance
between the load and the sides of the
chamber.
• If you are heating a number of small
parts, spread them throughout the mid-
dle two thirds of the chamber.
• Keep objects away from thermocouple.
• Raise your load up off the furnace floor
with small pieces of ceramic or a hearth
plate to promote even heating.
• Use insulated tongs and mittens when
loading and unloading furnace.
• Always wear safety glasses.
Furnace Loading
Caution
Do not overload your furnace
chamber or allow the load to
touch the thermocouple. If the
load is to be heated uniformly, it
should not occupy more than
two-thirds of any dimension of
the chamber. Failure to observe
these cautions could result in
damage to furnace components
and/or load.

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Contamination is a major cause of element failure,
therefore, when possible, remove the fume forming
material before heating (e.g., cleaning cutting oil
from tool steel).
The resistance wire is high-grade nickel-chromium.
Some chemicals, notably sulphur, halogens, and
cyanides, attack this wire at high temperatures, so
avoid spilling these chemicals in the furnace or
heating them any hotter than necessary. The
refractory cement helps to protect the wire, but will
not completely immunize it from damage.
All heating elements must be considered expend-
able, and replacement is expected; however, rea-
sonable care in their use will greatly extend the ser-
vice they will give. As the manufacturer has no con-
trol over the use or care of the elements, no specif-
ic service guarantee can be made.
Housekeeping is vital to your electric furnace—
KEEP IT CLEAN! Run your furnace up to 871°C
(1600°F) empty occasionally to burn off the conta-
mination that may exist on the insulation and ele-
ments. Run for approximately two hours with the
door slightly open.
Element life is reduced somewhat by repeated
heating and cooling. If the furnace is to be used
again within a few hours, it is best to keep it at the
operating temperature or at a reduced level such
as 260°C (500°F).
During normal use, the thermocouple in your fur-
nace can become oxidized and cause inaccurate
readings; therefore, we suggest that if you regularly
use your furnace you should change your thermo-
couple once every six months to assure the accura-
cy of your controller readings.
Clean by wiping the outside case of the unit with a
damp cloth and mild soap solution.
Preventive Maintenance
Warning
Before using any cleaning or
decontamination method
except those recommended
by Barnstead|Thermolyne,
users should check with
Barnstead|Thermolyne that
the proposed method will not
damage the equipment.
Warning
Disconnect the furnace from
power supply before clean-
ing.

Problem Possible Causes Corrective Action
The furnace does not heat No power. Check power source and fuses or
(CYCLE light does not illuminate). breakers.
Defective electrical hookup. Repair electrical hookup.
Thermocouple has oxidized and Replace thermocouple.
opened the circuit. (Open thermocouple
is indicated on the display as a
temperature of 0-5 degrees).
Controller malfunction. Replace controller.
Door switches malfunction. Re-align or replace door safety switches.
Defective solid state relay. Replace output relay.
Door switches do not cut Door switches are not functioning. Re-align or replace door switches.
power to heating elements.
Slow heatup. Low line voltage. Install line of sufficient size and proper
voltage. (Isolate furnace from other
electrical loads.)
Heavy load in chamber. Lighten load in chamber to allow
heat to circulate.
Wrong heating element. Install proper element.
Repeated element burnout. Overheating furnace. Keep furnace under maximum
temperature.
Heating harmful materials. Enclose material in container. Clean up
spills in and on chamber. Ventilate
chamber by opening door slightly when
heating known harmful reagents.
Contamination present from Replace insulation material.
pervious burnout.
Inaccurate temperature Oxidized or contaminated Replace thermocouple.
readout. thermocouple.
Poor thermocouple connection. Tighten connections.
Improper loading procedures. Use proper loading procedures.
Poor ventilation of base. Clear area around furnace base.
Thermocouple connections Reconnect thermocouple correctly.
reversed. (Indicated by
downscaling or temperature on
display.)
Controller malfunction. Replace controller.
15
The Troubleshooting section is intended to aid in defining and correcting possible furnace
problems. When using the chart, select the problem category that resembles the malfunc-
tion. Then proceed to the possible causes category and take necessary corrective action.
Troubleshooting

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Figure 3: Replacement of a Heating Element
Maintenance and Servicing
To Replace Heating Element
1. Set the furnace on its top. (See Figure
3). Remove thermocouple cover.
2. Remove screw and clamp holding ther-
mocouple, then grasp the thermocouple
at the bend where it enters the furnace
chamber and pull straight back. Retain
porcelain feed-through insulator.
3. When the thermocouple tip is clear of
the furnace back, bend it out of the
way.
4. Remove the screws holding the steel
back plate to the case.
5. Remove the steel back plate.
Thermocouple Cover
Warning
Disconnect the furnace from the
power supply before servicing.
Refer servicing to qualified
personnel.
Note
Perform only maintenance
described in this manual.
Contact an authorized dealer or
our factory for parts and
assistance.
Note
It is seldom necessary to disconnect
the thermocouple from the controller
if the thermocouple is in good
condition.

17
6. Remove the back insulation block by
opening the door and gently pushing it
out. Support this insulation block while
removing it, as it is quite soft and easily
crumbled at the edges.
7. Remove bottom cover to obtain access
to terminals.
These steps will expose the heating element
leads and insulating bushings in the bottom
plate of the furnace.
8. Cut the element leads between the ele-
ment and the terminal block. (There are
two leads.) The element and hearth
plate unit may now be removed by
pushing it straight back out of the fur-
nace. Use care not to damage the
chamber insulation when removing the
hearth plate and element as it can be
reused if it has not been contaminated.
9. Remove the old element lead wire and
power wires from the terminal block,
and save the glass sleeving for re-
installation on the new element leads.
Sleeving must be replaced if cracked or
brittle!
10. New elements are shipped flat to pro-
tect them from damage in shipment,
and to save space in storage. They
must be formed before installation.
11. Place the element on a flat surface with
the smooth (exposed element) side up.
Place a board or other straight edge
along one row of notches.
12. Gently bend the element along the
straight edge. The refractory cement
will break along the row of notches.
MAINTENANCE AND SERVICING
Note
The hearth plate contains no
heating coil, and may be saved
for re-installation if it is in good
condition. The hearth plate is
replaceable independent of the
heating element.

18
Make the bend 90°, avoiding exces-
sive bending. (The element wires will
be exposed at the corner thus formed.
This will not affect its life or perfor-
mance.)
13. Bend the other side of the element.
14. Place the hearth plate across the open
end of the ‘’U” shaped element.
15. Slide the element and hearth plate unit
into the chamber, pushing it firmly
against the hearth collar. Use care not
to damage the soft insulation. Remove
any crumbs of insulation that may get
between the unit and the hearth collar.
16. Thread the element leads through the
ceramic bushings. Bend the leads so
they lie close to the refractory plate
and the bottom insulation block. (The
easiest and safest way to do this is to
press the wire flat with a stick or blunt
pusher. Do not use a sharp object or
nick the wire.)
17. Replace the glass sleeving and bend
the lead 3/4 turn around the terminal
screw. Cut off the excess wire.
Replace power wires on top of ele-
ment lead wires and tighten screw. Do
not cross the wire over itself around
the terminal; this makes it difficult to
keep the connection tight and prevents
good electrical contact. If you have
excess wire, cut it off. Make sure ele-
ment lead wires are not touching any
other wires.
18. Replace bottom cover of control unit.
MAINTENANCE AND SERVICING
Note
Nicking or damaging the ele-
ment leads will cause prema-
ture element failure.

19
19. Replace the back insulation block and
back plate.
20. Examine the thermocouple, and, if it is
good, reinsert it into the chamber. It
should extend about 1-1/2" into the
chamber. Make sure porcelain insula-
tor is in place for the thermocouple to
pass through on the steel back plate.
Replace clamp and screw. (Excessive
scaling, pitting, or cracks are some
indications that the thermocouple may
need to be replaced.)
21. Replace thermocouple cover.
22. If replacement of back insulation is
necessary, carefully redrill hole for
thermocouple, using back cover as
guide.
23. Reconnect furnace to power supply.
24. Test operation of furnace.
To Replace Thermocouple
1. Set furnace on its top.
2. Remove thermocouple cover.
3. Remove screw and clamp holding the
thermocouple, then grasp the thermo-
couple at the bend where it enters the
chamber and pull it straight back from
the furnace. Retain porcelain feed-
through insulator.
4. Remove bottom cover.
MAINTENANCE AND SERVICING
Warning
Disconnect the furnace from the
power supply before servicing.