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.
Summary of Contents for Mini-Mite TF550 A
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