Lindberg/Blue Mini-Mite TF55030A User manual

Mini-Mite
TM
Tube Furnace
304243H01 Rev.
© 2013 Lindberg/Blue M
All rights reserved
Printed in U.S.A.
Table of Contents
Introduction .............................. 1
Safety Considerations ...................... 2
Pre-Installation ............................ 2
Installation ............................... 3
Start Up ................................. 4
Operation - UT150 Controller ................ 4
Operation- UP150 Controller ................
7
Communication Option .................... 13
F
Maintenance
............................
15
Troubleshooting .......................... 19
Replacement Parts and Wiring Diagrams ....... 20
Warranty ................................ 22
Material Safety Data Sheet .................. 23
TF55035C
Installation and Operation Manual
Mod
35
els:
TF55030A
TF55030C
TF550 A
TF55030KC
TF55035KC

Mini-Mite™ Tube Furnace
Table of Contents
Table of Contents
1 Introduction......................................................................................................................................................1
1.1 Features and Benefits.................................................................................................................................................1
1.2 Specifications .............................................................................................................................................................1
2 Safety Considerations.....................................................................................................................................2
3 Pre-Installation.................................................................................................................................................2
3.1 Unpacking .................................................................................................................................................................2
3.2 Operating Conditions ...............................................................................................................................................2
3.3 Atmosphere Systems ...............................................................................................................................................2
4 Installation........................................................................................................................................................3
4.1 Location......................................................................................................................................................................3
4.2 Wiring .........................................................................................................................................................................3
4.2.1 120 VAC Operation ............................................................................................................................................3
4.2.2 208 VAC Operation ...........................................................................................................................................3
5 Start Up.............................................................................................................................................................4
6 Operation - UT150 Controller .........................................................................................................................4
6.1 Furnace Start Up .......................................................................................................................................................4
6.1 Normal Controller Operation .......................................................................................................................................4
6.2 Setting the Temperature.............................................................................................................................................5
6.3 Setting the Overtemperature Protection (OTP) Temperature .....................................................................................5
6.4 Changing Between Celsius and Fahrenheit ...............................................................................................................5
6.5 Setting the Ramp to Setpoint Rate .............................................................................................................................6
6.6 Auto Tuning the Controller .........................................................................................................................................6
7 UP150 Controller Operation ...........................................................................................................................7
7.1 UP150 Controller Overview .....................................................................................................................................7
7.2 Single Setpoint Operation ..........................................................................................................................................8
7.2.1 Setting High Temperature Alarm 5etpoint: .........................................................................................................8
7.2.2 Accessing Local Mode ....................................................................................................................................8
7.2.3 Exiting Local Mode ............................................................................................................................................8
7.3 Programming Operation: Entering a Program ............................................................................................................8
7.3.1 Entering Programming Mode .............................................................................................................................8
7.3.2 Entering Program Parameters ...........................................................................................................................9
7.3.3 Running a Program ......................................................................................................................................... 10
7.3.4 Ending a Program............................................................................................................................................ 10
7.3.5 Changing a Program ....................................................................................................................................... 11
7.4 Auto Tuning the UP150 Controller ........................................................................................................................... 11
7.5 Temperature Offset Procedure ................................................................................................................................. 11

Mini-Mite™ Tube Furnace
Table of Contents
7.6 Changing Temperature Scale Between °C and °F ................................................................................................... 12
8Communication Option.....................................................................................................................................13
8.1 Cable Installation ..................................................................................................................................................... 13
8.2 UT150 Communications Setup Parameters ............................................................................................................. 13
8.3 Software Installation ................................................................................................................................................. 13
8.4 Communications Test............................................................................................................................................... 14
8.5 Ordering SpecView .................................................................................................................................................. 14
8.6 Troubleshooting ....................................................................................................................................................... 14
8.7 Decimal Point Adjustment ........................................................................................................................................ 14
8.8 Addresses for Multiple Controllers ........................................................................................................................... 14
9Maintenance.....................................................................................................................................................15
9.1 Thermocouple Replacement ................................................................................................................................. 15
9.2 Overtemperature Alarm Protection (OTP) ............................................................................................................ 16
9.3 Solid-State Relay Replacement ............................................................................................................................ 16
9.4 Power Relay Replacement .................................................................................................................................... 16
9.5 Temperature Controller Replacement ................................................................................................................... 17
9.6 Circuit Breaker Replacement ................................................................................................................................. 17
9.7 Heating Unit Replacement ..................................................................................................................................... 17
10 Troubleshooting ...............................................................................................................................................19
11 Replacement Parts and Wiring Diagrams..........................................................................................................20
12 Warranty...........................................................................................................................................................22
12.1 Domestic Warranty {United States and Canada) .................................................................................................. 22
12.2 International Warranty {excluding Canada) 12 Months Parts Warranty............................................................ 22
13 Moldatherm®Insulation Material Safety Data Sheet...........................................................................................23

Mini-Mite™ Tube Furnace Introduction
1
1 Introduction The Lindberg/Blue M Mini-Mite™ Tube Furnaces are a family of
ultra lightweight, economical laboratory tube furnaces. The low
thermal mass Moldatherm® insulation/heating element provides
fast duty cycles, energy conservation, and efficient
programming. Refer to Table 1 for specifications.
1.1 Featuresand Benefits
•Controlled heat-up rate eliminates thermal
shock to materials.
•Quick heat-up and cool-down rates.
•Energy efficient Moldatherm insulation suitable
for high interior-exterior temperature
differential. The unit is rated for a maximum
operating temperature of 1100°C.
•When fitted with a process tube can be used
with atmospheres other than air.
•Digital instrumentation for precise temperature
setpoint and display. Microprocessor
automatically optimizes control parameters
during furnace operation.
•Main power ON/OFF switch on control panel.
•Type K Thermocouple.
1.2 Specifications
Table1. Lindberg/Blue M Mini-Mite TF55030 Series Moldatherm TubeFurnaces
Model
Chamber Dimensions
in.(cm) Watts
Control
Type
Voltage
Net Product
Weight
lbs ( kg )
TF55030A 800 Single Setpoint Digital
120VAC
50/60Hz,
1 phase
28
(12.7)
TF55030C 1 Dia. x 12 L 208/240VAC
50/60Hz,
1 phase
28
(12.7)
800 Programmable Digital
120VAC
50/60Hz,
1 phase
1 Dia. x 12 L
(2.5x30.5) 800 Programmable Digital
208/240VAC
50/60Hz,
1
phase
1 phase
1 Dia. x 12 L
(2.5x30.5) 800 Programmable Digital
208/240VAC
50/60Hz,
1
p
hase
TF55035A
TF55035KC
800 Single Setpoint Digital 208/240VAC
50/60Hz,
800 Single Setpoint Digital
(2.5 X 30.5)
1 Dia. x 12 L
(2.5 X 30.5)
1 Dia. x 12 L
(2.5 X 30.5)
1 Dia. x 12 L
(2.5 X 30.5)
28
(12.7)
28
(12.7)
28
(12.7)
28
(12.7)
TF55030KC
TF55035C

Mini-Mite™ Tube Furnace Safety
Considerations/Pre-Installation
2
2 Safety Considerations
WARNING! Do not modify or use equipment in a
manner other than expressly intended. Modification
of equipment other than that for which it is
explicitly designed could cause severe injury or
death. Any customer after -market retrofit violates
the warranty of the equipment.
Do not reconfigure the controller. Any
reconfiguration of the control instrument could
cause inaccurate readings, faulty instrument
values, and may cause the unit to become
overheated and start on fire, causing personal
injury or death, product and property damage.
Do not modify or disconnect any safety features
provided. Disconnection of the unit safety features
could allow the unit to become overheated and
start on fire, causing personal injury or death,
product and property damage.
Do not use components or materials not
specifically designed for this equipment. Failure
to comply with this precaution could result in
damage to equipment used or the furnace and
may create an overheat situation. Also, do not use
anything other than OEM exact replacement
equipment and parts. Not using OEM
replacement parts could cause faulty
instrumentation readings, inoperable equipment,
or temperature overshoot. Both situations may
cause personal injury or death, product, and
property damage.
Before using, user shall determine the suitability
and integrity of the product for the intended use and
that the unit has not been altered in any way.
Misapplication may compromise the safety of the
end user or the life of the product.
CAUTION! This product contains ceramic fiber
or other refractories which can result in the
following:
• May be irritating to skin, eyes, and respiratory tract.
• May be harmful if inhaled.
• May contain or form cristobalite (crystalline silica) with
use at high temperature (above 871°C) which can
cause severe respiratory disease.
• Possible cancer hazard based on tests with laboratory
animals. Animal studies to date are inconclusive. No
human exposure studies with this product have been
reported.
WARNING! Before maintaining this equipment,
read the applicable MSDS (Material Safety Data
Sheets) at the back of this manual.
WARNING! When installing, maintaining, or
removing the fiberglass insulation, the following
precautions will minimize airborne dust and
fiber :
• Keep personnel not involved in the installation out
of the area.
• Use a good vacuum to clean area and equipment.
Use a dust suppressant if sweeping is necessary.
Do not use compressed air.
• Use a disposable mask suitable for nuisance dust.
• Wear long sleeve clothing, gloves, hat, and eye
protection to minimize skin and eye contact. Do not
wear contact lenses.
• Thoroughly wash self after work is complete.
• Launder work clothing separate from other clothes
and thoroughly clean laundering equipment after use.
If clothing contains a large amount of dust and/or
fiber, dispose of rather than clean.
• Promptly place used fiberglass parts and dust in
plastic bags and dispose of properly.
3 Pre-Installation
3.1 Unpacking
Carefully unpack and inspect the unit and all accessories for
damage. If you find any damage, keep the packing materials
and immediately report the damage to the carrier. We will assist
you with your claim, if requested. Do not return goods to
Lindberg/Blue M without written authorization. When
submitting a claim for shipping damage, request that the carrier
inspect the shipping container and equipment.
3.2 Operating Conditions
High concentrations of sulfates, chlorides, fluorides, alkalis, and
V2 0
5 can have corrosive effects on the ceramic fiber.
Contact
Lindberg/Blue M for additional information about the effects of
specific atmospheres on furnace performance.
With prolonged use, hairline cracks can develop in the
insulation materials. These minor cracks will not affect the
furnace's performance. We recommend turning off the furnace
completely when not in use. The heating unit is not damaged by
rapid heating and cooling cycles.
3.3 Atmosphere Systems
The Lindberg/Blue M Mini-Mite furnaces are designed for use
with combustible or inert atmospheres when contained in a
process tube.
WARNING! Do not use combustible gases
directly in this furnace. Process gasses must
always be contained in a separate tube.
CAUTION! Avoid combustible products which
generate toxic or hazardous vapor or fumes. Work
should only be done in a properly vented
environment .

Mini-Mite™ Tube Furnace Installation
3
4 Installation
Do not exceed the electrical and temperature ratings printed
on the dataplate of the furnace.
CAUTION! Improper operation of the furnace
could result in dangerous conditions. To preclude
hazard and minimize risk, follow all instructions and
operate within design limits noted on the dataplate.
4.1 Location
Install the furnace in a level area free from vibration with a
minimum of three inches of space, for air flow, around the unit.
4.2 Wiring
For detailed wiring information, refer to Figure 7 on page 21.
4.2.1 120 VAC Operation
The TF55030A model operates on 120 VAC, 50/60Hz, single
phase. Each furnace includes a 120 VAC grounded plug and cord
set. The units are completely prewired and ready for operation.
Before initial start up, inspect the furnace's wiring connections:
1. Remove the corner screws on the back panel of the furnace
and detach the back panel.
2. Check that the thermocouple is securely mounted and
undamaged.
3. Check the thermocouple wiring connections. Refer to
Figure I. Red is always negative.
CAUTION! Failure to check thermocouple
wiring connections before initial start up could
result in damage to the furnace.
4. Check that all electrical connections are secure.
Figure 1. Thermocouple
5. Replace the back panel on the furnace and secure with the
corner screws.
6. Plug the line cord into a 120 VAC, 15 amp, grounded line. The
furnace draws approximately 6.7 amps at 120 VAC.
4.2.2 208 VAC Operation
The TF55030C model operates on 240 VAC, 50/60Hz, single
phase. The Lindberg/Blue M Moldatherm tube furnace heating
elements are specifically designed for operation on 120, 208,
or 240 VAC. A furnace wired for 240 VAC operation can also
operate on 208 VAC. However, heatup and recovery times will
be longer.

Mini-Mite™ Tube Furnace Start Up
4
5 Start Up 6 Operation - UT150 Controller
CAUTION! Observe the following precautions
when operating the furnace:
•Never stand in front of an open furnace.
•Wear protective eyeware.
•Wear protective gloves.
•Use tongs to insert and remove furnace load.
•Do not allow the load to touch the furnace walls.
•Always use a hearth plate on the furnace bottom.
WARNING ! Before operating this equipment, read
the applicable MSDS (Material Safety Data Sheets)
at the back of this manual.
WARNING! When installing, maintaining, or
removing the refractory insulation, the following
precautions will minimize airborne dust and ceramic
fiber:
•Keep personnel not involved in the installation out of
the area.
•Use a good vacuum to clean area and equipment. Do
not use compressed air.
•Use NIOSH high efficiency respirator (3M #871 0 or
equivalent).
•Wear long sleeve clothing, gloves, hat, and eye
protection to minimize skin and eye contact. Do not
wear contact lenses.
•Thoroughly wash self after work is complete.
•Launder work clothing separate from other clothes and
thoroughly clean laundering equipment after use. If
clothing contains a large amount of dust and/or
ceramic fiber, dispose of rather than clean.
•Promptly place used ceramic fiber parts and dust in
plastic bags and dispose of properly.
6.1 Furnace Start Up
The furnace has a power interrupt switch. Opening the
furnace door shuts off power to the heating unit. The door
must be completely closed before the furnace will operate.
To start up the furnace, complete the following steps:
1. Turn furnace ON.
2. Use the arrow keys to adjust the setpoint to 550°C. Press the
3. SET/ENT key to register the change.
Run the furnace for two hours at 550°C.
4. Use the arrow keys to adjust the setpoint to 1,000°C. Press the
SET/ENT key to register the change.
5. Run the furnace for two hours at 1,000°C.
6. Adjust setpoint to room temperature. Press the SET/ENT key to
register the change.
Figure 2. UT150 Control Panel
The furnace temperature controller is configured and tuned at
the factory to function well for most applications. Occasionally,
it may be advisable to configure the temperature controller
differently to suit a particular working environment or process.
CAUTION! Before reconfiguring the controller, read
this chapter and the UT150 operation manual.
Reconfiguring the controller can change the unit
characteristics and design parameters, which can
hamper performance and make the equipment
dangerous to use.
This chapter provides brief instructions on how to perform the
following configuration changes:
•Setting the temperature
•Setting the Overtemperature Protection Temperature
•Changing between celsius and fahrenheit
•Setting the ramp to setpoint time
•Autotuning the controller
Detailed instructions on configuring the temperature controller
are found in the UTI 50 operation manual.
For instructions on the Controller-PC Communication Option,
refer to Section 8 on page 13.
6.1 Normal Controller Operation
The Temperature Controller senses the chamber air
temperature of the furnace (the PV, or process value) and
supplies the heat necessary to achieve the desired setpoint.
The controller includes an LED display and a pushbutton
keypad. Refer to Table 1 and Table 2 for lists of displayed
parameters and keypad functions.

Mini-Mite™ Tube Furnace
Operation - UT150 Controller
5
Parameter
Code
Factory
Set
Value
Description
Operating parameters (access by holding the SETIENT key)
A1 1125.0 Alarm setpoint (°C; 2057 °F)
CtL Pid Control mode
At oFF Auto tuning
p
20.0
Proportional band (°C; °F=36.0)
I 120 Integral time
d 30 Derivative
time
Ct 1 Heat cycle
time
FL 2 Sensor filter
bS 0.0 PV bias ( offset )
LoC 0 Key lock
Setup parameters (access by setting LoC=-1)
In 1 Input type (K
thermocouple in ° C; °F=31)
SPH 1100.0 High setpoint limit
° c; °F=2012
SPL 0.0 Low setpoint limit
° c; °F=32
Upr oFF Up ramp rate (degrees
C or F I minute)
dnr oFF Down ramp rate (degrees C or F I minute)
AL1 9 Alarm 1 type
AL2 oFF Alarm 2type
HY1 0.5 Alarm 1 hysteresis ( °F=1 )
HY2 0.0 Alarm 2 hysteresis
sc on Super Control
dr
0 Direct/reverse action
Button
Function
Pressing and holding the SET/ENT for three seconds
advances the display to the Operation Parameters
Menu.
While in the Operation Parameters Menu, use
SET/ENTto move from one parameter to the next, and
to register changes you have made in setpoint and
parameter values.
Holding SET/ENT for three seconds exits either the
Operation or Setup Parameters menu.
Use the Up Arrow button to increase the temperature
setpoint display and to change parameter values in the
Operation and Setup Parameter menus. Whenever
you change the value of a setpoint or parameter, the
decimal point flashes to remind you to register the
changed value with SET /ENT.
Use the Down Arrow button to decrease the
temperature setpoint display and to change parameter
values in the Operation and Setup Parameter menus.
Whenever you change the value of a setpoint or
parameter, the decimal point flashes to remind you to
register the changed value with SET/ ENT.
Table 1. UT150 Parameter Functions
Table 2. Pushbutton Keypad
6.2 Setting the Temperature
To set the temperature to the desired setpoint, complete
the following steps:
1. Press or until the desired setpoint is indicated on
the bottom line of the display.
2. Press SET/ENT to register the new setpoint.
6.3 Setting the Overtemperature Protection (OTP)
Temperature
The high limit alarm system with the temperature controller
disables the heater output. To set the alarm on the
temperature controller (typically 5°C above the desired main
temperature setpoint), complete the following steps:
1. Press and hold SET/ENT for 3 seconds, until A1 is displayed
on the upper line.
2. Press or until the desired overtemperature limit
setpoint shows on the bottom line of the display.
3. Press SET/ENT to register the new overtemperature alarm
setpoint.
4. Press and hold SET/ENT for 3 seconds to return to the normal
display.
6.4 Changing Between Celsius and Fahrenheit
The controller is factory-set to operate with degrees Celsius.
To change the display modes and parameter settings to the
Fahrenheit scale, you will need to change the Input Type
parameter In and also the values of various scale-dependent
parameters. If during this procedure the buttons are inactive for
more than two minutes, the controller will return to the
standard display.
To change from Celsius to Fahrenheit:
1. With the controller operating, access the Operating
Parameters menu by pressing and holding SET/ENT for 3
seconds.
2. Press and release SET/ENT repeatedly until the upper
display reads LoC.
3. Press until the displayed value of LoC is -1; then press
SET/ENT to access the Setup Parameters menu (refer to
Table 1 on page 5).
4. The first setup parameter displayed is Input Type (In). Press
to change its value from 1 to 31. After making this
adjustment (and all following parameter adjustments) be sure
to press and release SET/ENT again to register the change.
5. Press and release SET/ENT to advance to the SPH
parameter and change its value to 2012.
6. Press and release SET/ENT to advance to the SPL
parameter and change its value to 32.
7. Press and release SET/ENT to advance to the HYl
parameter and change its value to 1.
8. Press and hold SET/ENT for 3 seconds to exit the Setup
Parameters Menu.
9. Press and hold SET/ENT for 3 seconds to enter the
Operating Parameters Menu and display the Al parameter.
tmU 1
Ramp Time Units , ° per minute [0,° per hour]

Mini-Mite™ Tube Furnace
Operation - UT150 Controller
6
10. Use the button to set the Al parameter to the desired
overtemperature limit in °F.
11. Press and release SET/ENT to advance to the P parameter
and change its value to 36.0.
12. Press and hold SET/ENT for 3 seconds to exit the Operating
Parameters Menu.
13. The new temperature units are now effective. Follow the
instructions in Section 6.2 to reset the temperature setpoint
in °F.
6.5 Setting the Ramp to Setpoint Rate
The Ramp Rate feature allows the chamber to be heated or
cooled at any rate slower than the maximum capability of the
unit. To fine tune ramp rates, you may need to test using
loads with similar mass and thermal properties to loads you
intend to use in furnace applications.
To set the ramp to setpoint time, complete the following steps.
If during this procedure the buttons are inactive for more than
two minutes, the controller will return to the standard display.
1. With the controller operating, press and hold SET/ENT for 3
seconds to enter the Operating Parameters menu.
2. Press and release SET/ENT until the LoC parameter is on the
upper display.
3. Press the down arrow button to show '-1', and press SET/ENT
once to enter the Setup Parameters menu.
4. Press and release SET/ENT until the Upr parameter is on the
upper display.
5. Press the arrow buttons to select the new Up Ramp Rate value,
in °C per minute or ° F per minute, or 'oFF'. Press and release
SET/ENT to register the value change.
6. Press and release SET/ENT until the dnr parameter is on the
upper display.
7. Press the arrow buttons to select the new Down Ramp Rate
value, in ° C per minute or ° F per minute, or 'oFF'. Press and
release SET/ENT to register the value change.
8. Press and hold SET/ENT for three seconds to exit the Setup
Parameters menu.
9. The new Ramp Rates are now effective.
10. Follow the instructions in Section 6.2 to reset the temperature
setpoint.
To view the target setpoint during the ramp rate, press and
release an arrow button. The lower display will show the
setpoint next to the selected target setpoint. Return to the
ramping setpoint display by pressing and releasing the other
arrow button.
6.6 Auto Tuning the Controller
Factory settings are provided for general purposes, but your
process can be enhanced through the auto tune feature. For a
given process temperature and product load, auto tuning
maximizes the performance of the chamber by operating with
the quickest response and minimal temperature overshoot.
To auto tune the controller.
1. Load the chamber with materials that have the same mass
and thermal characteristics as a typical product load.
2. Operate the chamber to the process temperature.
3. Press and hold SET/ENT for 3 seconds to display the Al
parameter of the Operating Parameter menu.
4. Press and release SET/ENT to show the At parameter.
5. Press and release the arrow buttons to show on in the lower
display.
6. Press SET/ENT once to enter the auto tune mode and exit
the Operating Parameters menu.
The controller will cycle three times through a heating and
cooling pattern, measuring the characteristics of the load and
chamber temperature controls. During the auto tuning, At will
alternately flash with the measured temperature (PV) to indicate
that the auto tuning is in progress. The length of time for the
auto tune varies with the load, chamber size and temperature
selected.
The auto tune is completed when the regular display of the
measured temperature is shown. The chamber should now
operate to the process temperature with the given product
load, with the quickest response and minimal temperature
overshoot .
If the process temperature or load changes significantly,
another auto tune session may be necessary to optimize the
chamber performance.
Note: The ramp rate begins when the SET/ENT button is
p ressed after the target setpoint is selected. The setpoint
display on the controller will show the changing setpoint
at the selected ramp rate.

Mini-Mite™ Tube Furnace UP150
Controller Operation
7
Parameter
Code
Factory
Set
Value
Description
Operating parameters (access by holding the SETIENT key)
MODE RST Model Selection
Hold OFF Program Hold (RUN
mode)
AdV
OFF Segment Advance (RUN mode)
Ctl Pid Control mode
At
oFF Auto tuning (RUN mode)
p
20
Proportional band ( ° C; ° F=38)
I
120 Integral time
d
30 Derivative time
Ct 1 Heat cycle
time
FL OFF Sensor
filter
bS 0.0 PV bias ( offset )
LaC
1 Key lock
Setup parameters (access by setting LoC=-1)
In 1 Input type (K thermocouple)
SPH 1100 High Setpoint Limit (°C; °F=2012)
SPL
0 Low Setpoint Limit (°C; °F=32)
tmU
0 Program Time Limit (h.m)
sc
ON Super function
dr
0 Direct/Reverse Action
Button
Function
Pressing and holding the SET/ENT for three seconds
advances the display to the Operation Parameters
Menu.
While in the Operation Parameters Menu, use
SET/ENT to move from one parameter to the next, and
to register changes you have made in setpoint and
parameter values.
Holding SET/ENT for three seconds exits either the
Operation or Setup Parameters menu.
Use the Up Arrow button to increase the temperature
setpoint display and to change parameter values in the
Operation and Setup Parameter menus. Whenever you
change the value of a setpoint or parameter, the decimal
point flashes to remind you to register the changed
value with SET/ENT.
While in operating mode, pressing this button stops
(resets) program operation.
Use the Down Arrow button to decrease the
temperature setpoint display and to change parameter
values in the Operation and Setup Parameter menus .
Whenever you change the value of a setpoint or
parameter, the decimal point flashes to remind you to
register the changed value with SET/ENT.
While in operating mode, pressing this button starts
(runs) a program
7 UP150 Controller Operation Table 2. UP150 Parameter
Functions
Figure 3. UP150 Control Panel
The furnace temperature controller is configured and tuned at
the factory to function well for most applications. Occasionally, it
may be advisable to configure the temperature controller
differently to suit a particular working environment or process.
CAUTION! Before reconfiguring the controller, read
this chapter carefully. Reconfiguring the controller can
change the unit characteristics and design
parameters, which can hamper performance and
make the equipment dangerous to use.
7.1 UP150 Controller Overview
This version (V 54) of the UP150 controller features the
dual operation modes of Single Setpoint and Programming.
Each mode has distinct operations and uses.
Single Setpoint Mode allows the user to select a single
target temperature setpoint in the controller. The controller
will then operate the heating equipment until this setpoint
value is achieved.
Programming Mode allows the user to enter a series of
setpoint and time values. The controller will follow these
sequences of instructions to energize the heating equipment
until the entire sequence is complete.
The Temperature Controller senses the chamber air
temperature of the furnace (the PV, or process value) and
supplies the heat necessary to achieve the desired setpoint.
The controller includes an LED display and a pushbutton
keypad. Refer to Table 2 and Table 3 for lists of displayed
parameters and keypad functions.
Table 3. Pushbutton Keypad

Mini-Mite™ Tube Furnace UP150
Controller Operation
8
7.2 Single Setpoint Operation
The following sections describe how to operate the controller
in single setpoint (local) mode. Use this mode when you only
need to run the furnace with a specific setpoint and do not
require a programmed sequence of steps.
7.2.1 Setting High Temperature Alarm 5etpoint:
1. Press and HOLD for three seconds the 'SET/ENT' button to
display "modE rES ".
2. Press and release the 'SET/ENT' button to display "PrG 0".
3. Press the 'UP/RESET' Button to show the lower display value of
"1".
4. Press and release the 'SET/ENT' button to select this new value
and advance to the "SSP 25" display.
5. Press and release the 'SET/ENT" button until the High
Temperature Alarm Setpoint value is displayed as "Al".
6. Select an alarm setpoint 10°C above the target setpoint to be
selected.
7. Press and release the 'SET/ENT' button to place this new value
in the controller memory.
8. Press and HOLD for three seconds the 'SET/ENT' button to exit
this menu.
7.2.2 Accessing Local Mode
1. Press and hold for three seconds the 'SET/ENT' button to
display "modE rES ".
2. Press and release the ‘UP’ button twice to select the display
"modELCL".
3. Press and release the 'SET/ENT' button once to select Local
Mode. This selection causes the red indicator to illuminate
beside "L" on the control panel (refer to Figure 3).
4. Use the ‘UP’ and 'DOWN' buttons to select the desire
operating temperature setpoint.
5. Press and release the 'SET/ENT' button once to register the
setpoint value.
6. The display will then show measured temperature in the upper
display, the present temperature setpoint in the lower display.
7. This display and the buttons will remain active as long power
continues to the control module. Power interruptions will cause
the controller to enter reset or standby mode in which no
actions are made to operate the heating equipment.
You may use the arrow buttons to adjust the setpoint (lower)
value to be adjusted in this display mode. The ‘SET/ENT’ button
will register setpoint value changes, until these values are
changed again.
7.2.3 Exiting Local Mode
To exit Single Setpoint or Local Mode and turn off the energy to
the heaters:
1. Press and hold for three seconds the 'SET/ENT' button to
display "modE LCL".
2. Press and release the 'DOWN' button twice to select the
display "modE rES".
3. Press and release the 'SET/ENT' button once to select the
Reset Mode. This selection causes the red indicator to
extinguish beside the display label "L" that had indicated the
Local Mode.
4. This will change the display showing the measured
temperature in the upper display, with the lower display
showing the Start Set Point (SSP) temperature setpoint of
the program.
7.3 Programming Operation: Entering a Program
This section describes how to enter a simple program that
is designed to:
•direct the controller to ramp to a higher temperature;
•stabilize;
•ramp to a lower-temperature;
•end with an indefinite dwell.
If you intend to use the program features of the controller, it
is advisable to go through all the steps in this sample
program to familiarize yourself with the elements of
programming mode .
Note: Ifthe controller buttons are NOT pushed for 2 minutes,
the controller will return to the regular operator
mode/menu.
7.3.1 EnteringProgramming Mode
To access the programming menu :
1. Make sure the indicators beside "RUN" and "L" on the
controller face are off. If either indicator is on, press and hold
the 'SET/ENT' button until the display shows 'modE'. Select
'rES' in the lower display with the ‘arrow’ buttons. Press and
release the 'SET/ENT' button once.
2. Press the 'SET/ENT' button for 3 seconds to display "modE" in
the upper display and "rES" (Reset) in the lower display.
3. Press and release 'SET/ENT' until "LoC" is displayed. Make sure
the 'display below "LoC" is "0" (zero). If it is not "0", use ‘DOWN
ARROW’ to select "0" and press and release "SET/ENT" button
to register the change to "0".
4. Press and release the "SET/ENT' button until "PrG" is displayed.
5. At "PrG" display, press the 'UP ARROW’ to make the lower
display "1".
6. Press and release the 'SET/ENT' button once to enter the
programming menu.

Mini-Mite™ Tube Furnace UP150
Controller Operation
9
7.3.2 Entering Program Parameters
The first display is the Start Set Point parameter, shown as
"SSP" in the upper display. The value assigned to SSP is
usually the current room temperature, 25°C.
On the next page is an illustration of the program profile and
a table of the parameters entered.
Basic Ramp and Dwell Parameters:
1. Use the arrow buttons to select "25" in the lower display,
then press and release the 'SET/ENT' button twice to
enter this new value and to advance to the "StC" display. If
the value for "SSP" is correct and does not need to be
changed, press and release the 'SET/ENT' button once to
advance to the "StC" display.
2. Next is the Start Code parameter, shown as "StC" in the
upper display. The value assigned to StC is usually."0".
This will instruct the program to follow the Start Set Pomt.
Press the SET/ENT button to advance to the next display.
3. The next parameter, "SPI", is the first setpoint value that is
desired in the chamber and is normally a ramp segment.
Select this target temperature setpoint value with the arrow
buttons then press and release the 'SET/ENT' button twice
to enter this value and to advance to the "tMI" display. If
the value for "SPl" is correct and will not be changed, press
and release the 'SET/ENT' button once to advance to the
"tMI" display.
4. The next parameter, "tMl", represents the first time period
for the unit to reach the target temperature setpoint
selected in "SPI". This selection can be a value ranging
from 0.00 to 99.59, which represents hours and minutes.
Select this time value with the arrow buttons and enter it by
pressing and releasing the 'SET/ENT' button twice.
5. Press and release the 'SET/ENT' button to advance to the
next display of "SP2", this is normally the dwell segment.
Select the same target setpoint temperature value as "SPI"
with the arrow buttons. Press and release the 'SET/ENT'
button twice to enter this value and to advance to the next
display.
6. The next parameter, "tM2", represents the second time
period used to maintain or dwell at the target setpoint
selected in "SP2". This selection can be a value ranging
from 0.00 to 99.59, which represents hours and minutes.
Select this time value with the arrow buttons and enter it by
pressing and releasing the 'SET/ENT' button twice.
7. Next, "SP3" is the third setpoint value desired in the
chamber. Select this target temperature setpoint with the
arrow buttons and press and release the 'SET/ENT' button
twice to enter this value and to advance to the "tM3"
display. If this value is correct and not changed, press and
release the 'SET/ENT' button once to advance to the "tM3"
display.
8. "tM3" represents the third time period for the unit to reach
the target setpoint selected in "SP3". This selection can be
a value ranging from 0.00 to 99.59, which represents hours
and minutes. Select this value with the arrow buttons and
enter it by pressing and releasing the ‘SET/ENT’ button.
9. The next parameter, "SP4" is normally the dwell segment.
Select the same target temperature as "SP3" with the arrow
buttons, then press and release the 'SET/ENT' button twice
to enter this new value and to advance to the next display.
Additional Program Parameters"
10. The next parameter displayed is "tM4". Select a lower
display value of "oFF" with the ‘arrow’ buttons, then press
and release the 'SET/ENT' button twice to enter this value
change and advance to the next display. ·
11. The next display shows "EVl" in the upper display. The
lower value should always be "0" (zero). Press and release
the 'SET/ENT' button once to go to the next display.
12. "ALl" should always have a lower value of "9". Press and
release the 'SET/ENT' button once to advance to the next.
13. The next parameter, "AI", is used to select the high
temperature alarm trip setpoint. Use the ‘arrow’ buttons to
select a value 10°C (or 20°F) HIGHER than the highest
target setpoint to be used. Select the High Temperature
Alarm value with the arrow buttons then press and release
the ‘SET/ENT’ button twice to enter this new value and to
advance to the "HYl" display. If the value for "AI" is correct
and not changed, press and release the 'SET/ENT' button
once to advance to the "HYl" display.
14. "HYl" is used to select the amount of temperature change
below the high temperature alarm setpoint where the alarm
relay will reset. This value is usually "I". Select "I" with the
arrow buttons and press the 'SET/ENT' button six times to
enter the correct value and advance to the "JC" display. Or
if the value is correct, press the 'SET/ENT' button five times
to advance to the "JC" display.
15. For the parameter displayed as "JC", select "I" with the
arrow buttons, then press and release the 'SET/ENT' button
twice to display "WTZ". Selecting the value of"I" will cause
the program to hold the setpoint at this last segment. A
value of "0" would cause the program to reset and stop
running the program and stop the power to the heaters. A
value of "2" will cause the program to repeat 'continuously'.
16. When the display shows "WTZ", select a lower display
value of"oFF" with the ‘arrow’ buttons. Press and HOLD the
‘SET/ENT’ button for 3 seconds to return to the Reset or
standby display.
This concludes the steps required to enter a typical ramp-and
dwell program. On the next page is an illustration of the
program profile and a table of the parameters entered.

Mini-Mite™ Tube Furnace
UP150 Controller Operation
10
In the table below, ‘ *' denotes values typically set by the user according to the needs of a program.
Parameter
Value
Meaning
Parameter
Value
Meaning
PrG
0
Enters program menu
SP4
*
Segment 4 Setpoint
SSP
25
Start Setpoint
Tm4
oFF
Time length for Segment 4
StC
*
Start Code
EV1
0
Event 1
SP1
*
Segment 1 Setpoint
AL1
9
Alarm 1
tm1
*
Time length for Segment 1
1
1
Hysteresis for alarm 1
SP2
*
Segment 2 Setpoint
0
0
Event 2
tm2
*
Time length for Segment 2
AL2
oFF
Alarm 2
SP3
*
Segment 3 Setpoint
JC
1
Junction code (1=dwell; O=stop;
2=repeat)
tm3
*
Time length for Segment 3
wtz
oFF
Wait Zone
7.3.3 Running a Program
To run a program such as the one outlined above, press and hold the 'DOWN/RUN' button making the ‘RUN’ indicator illuminate.
At the end of this program the ‘HLD’ (hold) indicator is illuminated to indicate this program is in the indefinite dwell at the last target
temperature. This hold indicator is caused by the "JC" selection of "1", while the "JC" selections of "0" or "2" will not illuminate the
‘HLD’ (hold) indicator.
7.3.4 Ending a Program
To end a program while in the 'RUN' or 'HLD" (hold) mode, press and hold the 'UP/RESET' button to turn off the current program
and extinguish the 'RUN' or 'HLD' indicator.
Turning off the unit’s power will also stop the program. When power is restored, the controller is in the Reset or standby mode with
no power to the heaters.
Note: The programmer/controller will not operate the unit's heaters (to change or maintain a temperature) unless there is a program
running or a single setpoint value is selected in the Local Mode.
Figure. Common Program Profile

Mini-Mite™ Tube Furnace
UP150 Controller Operation
11
7.3.5 Changing a Program
To make changes ONLY to the target temperature and
segment length times for simple program operation, follow
these steps:
1. Make sure the indicators beside "RUN" and "L" on the
controller face are off. If either indicator is on, press and hold
the 'SET/ENT' button until the display shows 'modE'. Select
‘rES’ in the lower display with the 'arrow' buttons. Press and
release the 'SET/ENT' button once.
2. Press the 'SET/ENT' button for 3 seconds to display "modE" in the
upper display and "rES" in the lower display. Press and release
‘SET/ENT' repeatedly to display "LoC". Make sure the value
below "LoC" is "0" (zero). If it is not "0", use 'DOWN' arrow to
select "0" and press and release "SET/ENT" button to register the
change to "0".
3. Press and release the ‘SET/ENT’ button once to show "PrG" on
the upper display.
4. Press the ‘UP’ arrow to make the lower value "1".
5. Press and release ‘SET/ENT' button twice to display "SP1". Using
the arrow buttons to revise the target setpoint.
6. Press and release ‘SET/ENT' button twice to display "tm1". Using
the arrow buttons to revise the segment time length needed to get
to the target setpoint ‘SP1’.
7. Press and release ‘SET/ENT' button to display other setpoints
and segment time lengths. Use the arrow buttons to change the
temperature setpoints and time lengths. Press and release the
'SET/ENT' button to register any new values,
8. Press and HOLD the ‘SET/ENT’ button for 3 seconds to exit the
program menu and return to the reset or standby display.
7.4 Auto Tuning the UP150 Controller
Auto tuning maximizes the performance of the chamber at a
selected temperature with the product load’s characteristics ,
by operating with the quickest response and minimal
temperature overshoot.
Factory settings are for general purposes, but your process can
be enhanced through the auto tune feature. To obtain this
maximum performance, follow these steps to auto tune the
controller.
1. Load the chamber with materials that have the same mass
and thermal characteristics as an actual product load.
2. Operate the chamber to the process temperature.
3. Start the Auto Tune: Press and hold the 'SET/ENT' button for
three seconds to display the "modE" parameter of the
Operating Parameter menu.
4. Press and release the 'SET/ENT' button five times to advance
to the "At” parameter.
5. Press and release the ‘UP’ arrow button to show "on" in the
lower display.
6. Press the 'SET/ENT' button once to enter the auto tune mode
and exit the Operating Parameters menu.
7. The controller will cycle three times through a heating and
cooling pattern, measuring the characteristics of the load and
chamber temperature controls. During the auto tuning, 'At' will
alternately flash with the measured temperature (PV) display to
indicate that the auto tuning is in progress. The length of time
for the auto tune varies with the load, chamber size and
temperature selected.
8. The auto tune is completed when the regular display of the
measured temperature is shown without the "At" value flashing.
The chamber should now operate to the process temperature
with the given product load, with the quickest response and
minimal temperature overshoot.
9. If the process temperature or load changes significantly,
another auto tune session may be necessary to optimize the
chamber performance.
To interrupt the auto tune before it is completed, simply turn off
the power to the controller and unit. When the power is
restored the auto tune will not be operating.
7.5 Temperature Offset Procedure
The purpose of this procedure is to create an offset in the
displayed temperature measurement for the Yokogawa model UP
I 50 temperature controller.
1. Operate the oven or furnace chamber to your normal stable
temperature setpoint, with an independent temperature
measurement device located in the center of the chamber. The
controller will be 'running' the program or operating in the local
mode to maintain the temperature.
2. Note any difference in the controller's measured temperature
(upper value) and the independent measurement. If a difference
of greater than 1oc is noted proceed with the following steps.
3. Press and hold the "SET/ENT" button for 3 seconds to display
"modE".
4. Verify the button lockout parameter will give access to make this
display offset. Press and release the "SET/ENT" button twelve
times to display "LoC". The value 0 (zero) displayed will give full
access and is necessary to make the display offset changes
desired. If the value displayed is 1 or 2, use the "down arrow"
button to make 0 (zero) and press and release the "SET/ENT"
button to register this change.
5. Press and release the "SET/ENT" button twelve times to display
"bS" and the current offset value.
6. Select the offset value with the arrow buttons that is needed to
make this controller display correctly.
For example, if the independent measurement is 553°C, the
controller Temperature measurement display shows 550°C, and
the current controller offset (bS) is -2, then make the controller
display offset "+I" [(+3 needed offset)+ (-2 current offset)= (+1
new offset)].
7. Press and release the "SET/ENT" button once to register this new
offset value. Press and hold the "SET/ENT" button for 3 seconds
to exit this controller menu.
8. Operate the controller to the same temperature to stabilize the
chamber to check for any further variations between the controller
and the independent measurement. Repeat steps 2- 7 as
necessary.
9. This completes the display offset procedure for the Yokogawa
model UP150 temperature controller. If the button lockout
parameter "LoC" was originally on a value of 1 or 2, repeat steps
3 & 4 to return to this original value.
Contact Technical Service at 1-800-438-4851 if you have
any questions.

Mini-Mite™ Tube Furnace
UP150 Controller Operation
12
7.6 Changing Temperature Scale Between °C and °F
To change the temperature scale in the UP150 controller to
operate on °F instead of the factory setting of oc, or from °F to
°C, follow these steps.
These changes will alter the controller input type and
associated scale-dependant parameters, AND ERASE the
stored program to default values. Please document the
stored program in the controller BEFORE proceeding .
If during this procedure the buttons are inactive for more than
two minutes, the controller will return to the standard display.
1. Make sure the indicators beside "RUN" and "L" on the
controller face are off. If they are on, press and hold the
'UP/RESET' button until the RUN or L indicators are off.
2. To access the Operating Parameters menu, press and
HOLD the 'SET/ENT' button for at least 3 seconds to display
"modE".
3. Press and release the 'SET/ENT' button until the display
shows "LOC'' in the upper display. Make sure the value
below "LoC" is "0" (zero). If it is not "0" use 'down arrow' to
make "0" and press and release "SET/ENT" button to
register change to "0".
4. At "LoC" display, press the 'down arrow’ to make the lower
value "-1".
5. Press and release the "SET/ENT' button to enter the Setup
Parameters menu and show "In" on the upper display and a
numerical value in the lower display.
6. See table below for the STANDARD values for this
parameter and the others needed in the following steps.
7. Select the appropriate value for the "In" parameter. Press
the 'UP' or 'DOWN' arrow buttons to make the lower display
to the new value, then press and release the 'SET/ENT'
button TWICE to register the new value and advance to the
next parameter.
8. "SPH" is the next parameter displayed. Select and enter the
new value, then press and release the 'SET/ENT' button
TWICE.
9. "SPL" is the next parameter displayed. Select and enter the
new value, then press and release the 'SET/ENT' button
ONCE.
10. Press and HOLD the 'SET/ENT' button for at least 3
seconds to exit.
11. Press and HOLD the 'SET/ENT' button for at least 3
seconds to enter the Operating Parameter menu and show
"modE" in the upper display.
12. Press and release the 'SET/ENT' button until the upper
display shows "P". Select the value in the table and adjust
the lower display accordingly. Press and release the
'SET/ENT' button TWICE.
13. "I" is the next parameter displayed. Select and enter the new
value, then press and release the 'SET/ENT' button TWICE.
14. "d" is the next parameter displayed. Select and enter the
new value, then press and release the 'SET/ENT' button
ONCE.
15. Press and HOLD the 'SET/ENT' button for at least 3
seconds to exit.
16. Reenter or create a program using the new temperature
scale.
The following table shows the corresponding parameter
values for 1 1000c box furnaces in °C and °F:
Parameter
°C
°F
In
1
31
SPH
1100
2012
SPL
0
32
p
20
38
I
120
120
D
30
30
The P, I and D parameters may be altered through auto tuning
(refer to Section 7.4 on page 11 ).

Mini-Mite™ Tube Furnace
Communication Option
13
8 Communication Option
The Communication Option enables digital communication
between the UT150 controller and a PC. It is a factory-
installed temperature controller and cable assembly using an
RS-485 connection through a DB9 cable.
This option is supplied with the necessary cable and
diagnostic software to set up and check the connections
between the unit and the PC. Follow the steps below to
make the cable connections and to check the data transfer. If
you have purchased the 'SpecView Plus Communication
Software’ with the copy protection key, refer to the SpecView
instructions in parallel with this setup outline.
8.1 Cable Installation
1. To install the 25-foot external cable, disconnect the electrical
power from both the unit and PC.
2. Connect the cable end with a black housing to the 9-pin port on
the rear of the Lindberg/Blue M unit.
3. Connect the other cable end with the RS-232/485 Converter to
the COM 1 Port (or other COM port of your choice) on the rear
of the PC.
4. If you have purchased the SpecView Plus Communication
Software with the copy protection key, install this key on your
USB port.
5. Apply electrical power to the unit and the PC.
8.2 UT150 Communications Setup Parameters
Table 4 shows the default values for UT150 Communications
Setup Parameters. To access these parameters:
1. Hold the SET/ENT button for three seconds to display the
Operating Parameters. Press and release the SET/ENT
button to display the 'LoC' parameter. Press the down arrow
to show '-1' in the lower display and press SET/ENT to
acknowledge and enter the Setup Parameters menu.
2. Press and release the SET/ENT button to access the six
parameters specific to the communications option.
Table 4. UT150 Communications Parameters
Parameter
Code
Factory
Set
Value
Description
Communications Setup Parameters
PSL
0
Protocol selection
Adr
1
Controller address
bPs
9600
Baud rate
Pr 1
EVN
Parity (even)
SIP
1
Stop bit
dln
8
Data length
8.3 Software Installation
1. Load the SpecView software onto the PC hard drive, using
the disks provided.
2. Run the software. (If you have purchased the SpecView Plus
Communication Software with the copy protection key, skip step
3.)
3. If you do not have a copy protection key, a 'SpecView' window
opens with the message, "Problem with Dongle: 'Dongle' (Copy
Protection Key) not detected on parallel port." Click the OK
button to acknowledge the message. Without the copy
protection key, this diagnostic/sampler software has a 20-minute
time limit on each run. If the message 'demo version of
SpecView has stopped communicating - values are frozen'
appears before the communication diagnostics are finished,
close the software and reopen it for another 20-minute se-
gment.
4. When the 'Configurations Found..’ window opens, click on the
"Test Comms for New Config." Button.
5. The 'Input Required..’ Window then opens. Enter a new Config.
Name (up to 8 characters with no spaces) or accept the
'DEFAULT' name. Click OK.
6. The 'Ports and Protocol' window opens next. On the 'COM1:'
line (if the COMl port is the serial port used to connect to the
controller) select the pulldown menu from Protocol column.
Highlight "*Yokogawa 100" or "100 Series" for controller model
UT150.
7. Select the pulldown menu from the Baud Rate column. Highlight
"9600". Click on the 'Start Scan' button.
8. The SpecView program scans all 99 possible controller
addresses and places a representative ‘instrument view' of the
temperature controller on the PC screen for each controller
found connected to the PC. The factory-set addresses are 1, 2,
3, etc., depending on the number of controllers with
communications in a single furnace. Additional units with
communications will require the controller's address to be
changed. See Section 8.8 on page 14 for detailed instructions
on configuring multiple controllers.
9. After the instrument scan is completed, a SpecView window
appears with the message, "All channels scanned. Press OK to
continue, or cancel to rescan". Press OK if all of the connected
controllers are properly displayed. If no controls are displayed,
check the "troubleshooting" section at the end of this setup.
10. To begin communication between the PC and the controller,
click on the 'Enter Runtime' button (an icon of a running
figurine). This action will ask for a file name to save this display:
use the given default or select another.
11. The "SpecView” window will be displayed, showing the current
PV (process variable) and SP (set point). If the SpecView
display of the controller shows X's, the communications
connection or power to the control may have been interrupted.
12. On some controllers, the decimal point position has been
changed from the Yokogawa factory default. This will make the
SpecView display differ from the controller. If this is the case,
follow the instructions in Section 8.7 on page 14.

Mini-Mite™ Tube Furnace
Communication Option
14
8.4 Communications Test
When you have established a working communications link
between the controller and PC, you should check the link
by varying the target set point function:
1. Click on the arrows of the controller(s) shown in the
SpecView window. This will open a keypad window where the
set point can be changed.
2. Select a·temperature set point a few degrees from the current
temperature and press the 'send' button. Verify that the
controller display shows the setpoint change.
3. Select the original temperature set point through the keypad on
the controller and observe the change on the PC display.
4. The controller parameters may be viewed through SpecView by
clicking on the 'PAR' button. A window opens that lists the
controller parameters. Each parameter can be changed by
selecting it and clicking on the 'Alter' button. Select the 'Close'
button. Make no changes at this time. This concludes the
initial software diagnostics.
8.5 Ordering SpecView
If this software program is what you need as a tool to organize
and operate the digital communication on Lindberg/Blue M
equipment, contact Lindberg/Blue M sales, SpecView directly
at [e-mail], or on their Internet site at
www.specview.com, and request "SpecView Plus".
8.6 Troubleshooting
If your connection is not working properly, check the following
conditions:
A. Verify complete and tight cable connections between the
Lindberg/Blue M unit and the PC.
B. Verify that power has been supplied to the unit and
temperature controller before starting the software
program.
C. Verify the configuration values in the controller, listed in the
Table 4 on page 13.
D. Verify the values in the 'Ports & Protocols’ window
(see step 6 in Section 8.3).
8.7 Decimal Point Adjustment
If the decimal point on the PC display of the controller does not
match the controller display, you can make an adjustment to
correct this:
1. From the Configuration Mode (available through the 'file' drop
down while in the Runtime Mode), select the 'Variables List'
icon, represented by a page with lines on it.
2. Select the controller model number and select 'Properties'
button. The 'Add/Rename Instrument’ box appears.
3. In the Address window, highlight the middle digit (usually a 1),
and change to '0' (zero).
4. Click the 'Rename Only' button. Close the 'Variables' box (click
on 'X' in corner of smaller box).
5. Select the 'Enter Runtime' icon to see the results of the change.
8.8 Addresses for Multiple Controllers
When more than one controller has the same communication
address, alternative addresses need to be set up in the
individual controllers. Addresses 1 through 99 can be selected
on the same communication link to each PC COM port.
1. Determine a unique address for each temperature controller
equipped with the communications option.
2. On the UT150 controller, access the Operating Parameters menu
by pressing and holding SET/ENT for 3 seconds.
3. Press and release SET/ENT repeatedly until the upper display
reads LoC.
4. Press '7 until the displayed value of LoC is -1; then press
SET/ENT to access the Setup Parameters menu .
5. Press and release the SET/ENT button to access the six
parameters specific to the communications option. Compare the
displayed values to those in Table 4 on page 13. Make
adjustments as needed.
6. Press and hold SET/ENT for 3 seconds to exit the Setup
Parameters Menu.

Maintenance
Mini-Mite™ Tube Furnace
15
9 Maintenance
CAUTION! Maintenance should only be
performed by trained personnel.
WARNING! Disconnect furnace from main
power before attempting any maintenance to
furnace or its controls.
WARNING! Before maintaining this equipment,
read the applicable MSDS (Material Safety Data
Sheets) at the back of this manual.
WARNING! When installing, maintaining, or
removing the refractory insulation, the following
precautions will minimize airborne dust and
ceramic fiber:
•Keep personnel not involved in maintenance out of
the area.
•Use a good vacuum to clean area and equipment.
Do not use compressed air.
•Use NIOSH high efficiently respirator (3M #8710 or
equivalent).
•Wear long sleeve clothing, gloves, hat, and eye
protection to minimize skin and eye contact. Do not
wear contact lenses.
•Thoroughly wash self after work is complete.
•Launder work clothing separate from other clothes and
thoroughly clean laundering equipment after use. If
clothing contains a large amount of dust and/or
ceramic fiber, dispose of rather than clean.
•Promptly place used ceramic fiber parts and dust in
plastic bags and dispose of properly.
For replacement parts specifications, refer to Table 7 on page
20. For wiring schematics, refer to Figure 7 on page 21.
9.1 Thermocouple Replacement
WARNING! Disconnect furnace from main
power before attempting any maintenance to
furnace or its controls.
Note: For optimal performance, the thermocouple should be
replaced once a year. In some situations a more frequent
replacement schedule is recommended. SnSr Fail on the
controller display indicates a broken thermocouple.
Refer to Figure 4 as you perform the following procedure:
1. Disconnect the main power.
2. Open the latch.
3. Remove the eight corner screws from the back furnace
panel. Locate the thermocouple (item #1 in Figure 4).
Note: There are wires connecting the back panel to the furnace.
Be careful to place the back panel next to the furnace
without disturbing these wires.
4. Note polarity and thermocouple wire location. Remove the
terminal screws and remove the thermocouple lead wires.
Refer to Figure 1 on page 3.
5. Remove the thermocouple mounting screws.
6. Pull the thermocouple straight out of the heating unit.
Note: The thermocouple could be damaged if it is not pulled
out carefully.
7. Slide the new thermocouple straight into the heating unit
and replace the mounting screws.
8. Connect the thermocouple lead wire to the terminalscrews
on the thermocouple. Be carefulnot to bend the
thermocouple wire.Red is always negative. (If the
extension leads are black and white, white is negative).
Refer to Figure 1 on page 3 for additionalwiring
information.
9. Replace the furnace rear panel.
Note: Inspect all wire connections before reassembling the
back panel.
WARNING! Failure to check all wire
connections may cause damage to the unit.
Figure 4. Thermocouple Replacement

Maintenance
Mini-Mite™ Tube Furnace
16
9.2 Overtemperature Alarm Protection (OTP)
The Load Overtemperature Alarm System indicates if the
temperature inside the chamber exceeds the load alarm
setpoint. To insure proper operation, this alarm system must be
checked at least once a month.
To test the load overtemperature alarm, complete the
following steps:
1. Operate the furnace without a product load at your normal
operating temperature.
2. Readjust main temperature control to a temperature above
the load alarm setting (refer to Sections 6.2, 7.2.1, 7.3.2 Step 13).
3. Observe the unit closely until the load alarm trips, indicated
on the controller beside the Allabel.
4. Reset the main temperature control to normal operating
temperature. Once the unit cools below the alarm setpoint,
the Al indicator will go off.
9.3 Solid-State Relay Replacement
WARNING! Disconnect furnace from main
power before attempting any maintenance to
furnace or its controls.
Refer to the Troubleshooting section for relay testing. If the
solid-state relay is inoperable, complete the following steps
to replace the relay (refer to Figure 5):
1. Remove the screws located on the left and right sides of the
control panel (#1 in Figure 5).
2. Slide the panel assembly away from the unit to expose
components.
3. Locate the solid-state relay on the component tray (#2 in
Figure 5).
4. Note the terminal connections of the relay wires and label them
for reattachment. Remove the wires from the relay terminals.
5. Remove the mounting screws from the relay.
6. Replace the relay and reconnect the wires.
7. Reassemble the unit.
9.4 Power Relay Replacement
WARNING! Disconnect furnace from main
power before attempting any maintenance to
furnace or its controls.
Refer to the Troubleshooting section for power relay
testing. If the power relay is inoperable, complete the
following steps to replace the relay (refer to Figure 5):
1. Remove the screws located on the left and right sides of the
control panel (item #1 in Figure 5).
2. Slide the panel assembly away from the unit to expose
components.
3. Locate the power relay on the component tray (item #3 in
Figure 5).
4. Note the terminal connections of the relay wires and label them
for reattachment. Remove the wires from the terminals of the
relay.
5. Remove the mounting screws from the relay.
6. Replace the relay and reconnect the wires.
7. Reassemble the unit.
Figure 5. Solid State Relay Replacement

Maintenance
Mini-Mite™ Tube Furnace
17
9.5 Temperature Controller Replacement
WARNING! Disconnect furnace from main power
before attempting any maintenance to furnace or
Its controls.
To replace the temperature controller, complete the
following steps (refer to Figure 5 on page 16):
1. Disconnect main power and switch the circuit breaker (#4 in
Figure 5 on page 16) to the OFF position.
2. Remove the two sheet metal screws located on each side of the
furnace near the lower front (#1 in Figure 5 on page 16). Pull the
control panel forward to access the controller (#5 in Figure 5 on
page 16).
3. Note the terminal connections of the wires and label them for
reattachment. Remove power input and output wires from the
back of the controller. Observe polarity for the thermocouple lead
wire. Red is always negative. Refer to Figure 1 on page 3 for
additional wiring information.
4. Carefully pry the top and bottom of the square collar away from
the sleeve and slide the collar off the back of the sleeve.
5. Pull the controller out through the front of the control panel.
6. Install the replacement instrument by reversing the above
procedure.
9.6 Circuit Breaker Replacement
The control circuitry is protected by two circuit breakers located
at the rear of the furnace (lower left side). When a circuit
breaker opens, a white indicator tab is visible. Check the circuit
for faults and press the circuit breaker switch to reset. Replace
any circuit breaker which does not reset.
9.7 Heating Unit Replacement
WARNING! Disconnect furnace from main power
before attempting any maintenance to furnace or
its controls.
CAUTION! This product contains ceramic fiber or
other refractories which can result in the following:
•May be irritating to skin, eyes, and respiratory tract.
•May be harmful if inhaled.
•May contain or form cristobalite (crystalline silica) with
use at high temperature (above 871"C) which can
cause severe respiratory disease.
•Possible cancer hazard based on tests with laboratory
animals. Animal studies to date are inconclusive. No
human exposure studies with this product have been
reported.
To replace the heating unit, complete the following steps (refer
to Figure 6):
1. Disconnect the main power and open the latch.
2. Remove the eight corner screws connecting the back panel to the
furnace (item #1 in Figure 6). Place the panel near the furnace.
Note: There are wires connecting the back panel to the furnace.
Be careful to place the back panel next to tho? furnace
without disturbing these wires.
3. Locate the top heating unit terminal block (item #2 in Figure 6).
Label the twisted, solid silver wires which are attached to the
terminal block.
4. Remove the nuts and washers holding the twisted wires to the
terminal block and remove the wires. Remove the ring lugs from
the twisted wires. Save the nuts, washers, and ring lugs for
reassembly.
5. Lift the top heating unit assembly up and away from the furnace
base. Place the assembly on a flat surface with the heating
element facing up.
Note: To replace the top heating unit, proceed to step 8.
6. Mark and remove the wires from the bottom heating unit terminal
block (item #3 in Figure 6).
7. Remove the thermocouple mounting screws and slide the
thermocouple straight out (refer to Section 9.1 on page 15).
8. Remove the six screws holding the two element hold-down
brackets (item #4 in Figure 6). Remove the hold-down brackets.
9. Lift the heating unit (item #5 in Figure 6) up and out.
CAUTION! Do not damage the wires extending
from the heating unit.
10. Insert the new heating element. Guide the twisted, solid silver
terminal wires through the slot in the side of the inner furnace. The
bottom of the heating unit will lay flat against the leaf spring.
11. Reassemble the hold-down brackets. Replace the six screws.
12. Connect the heating element terminals to the terminal block
14.Reassemble the furnace.
13. Drill hole into heating element for the thermocouple, by using a
guide similar to the thermocouple head and a long ¼” drill bit.
See picture for reference.
Note: To prevent damage to insulation, drill by hand or adjust speed on
drill to the lowest setting.
Figure. See step13 for reference