DENTSPLY NeyFire T Owner's manual

Owner & Oper tor’s M nu l
Models: Volt ge: Frequency:
 -V / Hz
 -V / Hz
T ble of Contents
DESCRIPTION PAGE
Safety ...........................................................................................
Features.........................................................................................
Technical Data ...............................................................................
Installation Instructions ................................................................
Overview .......................................................................................
General Ceramic Operation ...........................................................
Maintenance ................................................................................
Errors...........................................................................................
Product Service.............................................................................
Declaration of Conformity ............................................................
Warranty .....................................................................................
Vacuum Porcelain Furnaces

FOR PROFESSIONAL USE ONLY.
Please read these operating instructions carefully before installing or operating this equipment.
• Use indoors only.
• Maximum operating altitude m (, Ft).
• Never operate the unit in close proximity to combustible materials or place materials on top of the unit.
• The unit must be electrically grounded to a three wire electrical outlet or receptacle. The electrical service provided
must be a dedicated line of the proper size according to local electrical codes.
• Unit must be placed in a position that allows the power cord to be easily disconnected from the wall or inlet socket.
• The end user is to only use an approved or certified power cord set if in a geographic region that uses a different power
cord set other then what is provided.
• Do not attempt to maintain the unit until you have read and understand this operation manual.
• Disconnect the line cord before attempting to service the unit.
• Do not operate the unit controls with tongs or other tools.
• Do not use solvents or liquid cleaners on the control panel.
• The manufacturer is to be consulted if there is any doubt about the compatibility of cleaning agents with parts of this
equipment or with material contained in it.
• Do not cover the top of the unit.
• If the unit is not operated in the manner as specified in this manual, the protection provided by the unit may be
impaired.
CAUTION: RISK OF DANGER!
BURN HAZARD IS PRESENT WHEN CHAMBER IS OPENED. USE CAUTION AFTER OPENING CHAMBER. SURFACES
MAY BE HOT!
OSHA AND CALIFORNIA PROPOSITION 65: MUFFLE DUST EXPOSURE
In keeping with the policy of DENTSPLY Prosthetics to build safe products, comply with all National and State statutes and
keep you, the valued customer informed; the services of a Certified Industrial Hygienist firm were employed to test and
evaluate the lab operator’s exposure to respirable refractory ceramic fiber (RCF) and crystobalite (a form of crystalline
silica) present in the furnace muffle.
When it becomes necessary to replace the muffle, the person doing this work is recommended to wear a HEPA filter
respirator and protective gloves as a precautionary matter.
Seal used muffle in a plastic bag and dispose of in accordance with local, state and Federal regulations.
Because this product and many similar products on the market today contain crystalline silica and ceramic fibers, it is
necessary under the statutes of California Proposition  that DENTSPLY Prosthetics include the following statement:
“This pr duct c ntains substance(s) kn wn t the State f Calif rnia t cause cancer.”
Material Safety Data Sheets for RCF materials supplied upon request.
Pollution degree: 
SYMBOL TABLE
- Alternating current
- On (Supply)
- Off (Supply)
- Caution, Hot Surface
- Protective Conductor Terminal
- Caution, Risk of Danger
SAFETY:
2

3
DESCRIPTION OF FURNACE:
The NeyFire T is a dental ceramic vacuum furnace. A NeyFire may be programmed to produce a temperature of up to
°C (°F). All units have provisions for applying a vacuum during the firing cycle. Units are cord connected and
intended for bench top use.
INTENDED USE OF FURNACE:
The intended use of the NeyFire T is for sintering (firing) and glazing dental crown and bridgework ceramics in
professional dental laboratories.
INTERNATIONAL PROTECTION RATING:
IPXO
FEATURES:
• Small Footprint – saves bench space
•  User Programs for Ceramics (-stage Selectable for Crystalization and Tempering Cycles)
• USB Memory Stick Loading, Backup and Printing Programs
• Large Color LCD Graphic Display Module with Touch Control
• High Performance Quartz Fiber Muffle Produces Superior Porcelain with Long Life Characteristics.
• Large Active Heat Zone for better Temperature Uniformity
• °C (°F) Maximum; °C (°F) Minimum Temperature
• Ultra Smooth Muffle Movement with Stationary Work Support
• Programmable Muffle Dry Position
• Programmable Dry Time
• Independent Low, Medium and High Fusing Temperature Calibrations
• Fast Cool Down for Short Times between Loads Gives Maximum Productivity
• Vacuum Release Programmable in Temperature or Time
• Fast Heat Rates of up to °C/minute (°F/minute)
• Full Program Flexibility; Parameters Changeable During Firing Cycle
• Power Outage Return; After a short power outages the firing cycle will resume without loss of vacuum due to outage. In
order to take affect the user would need to cycle power.
• Programmable High Temperature Limit
• Programmable Energy Saver "Idle Down Time"; Muffle closes but Maintains Lo Temp
• NIGHT MODE: Muffle closes when Temperature reaches a Programmed Night Temp to prevent moisture absorption. Can
also be activated during a Cycle.
PURGE Cycles: Vac Purge – : min hold at °C (°F) for Muffle Decontamination after the use of Silver Alloys
Air Purge – : min hold at °C (°F)
• Three Point Temperature Calibration; Operator reads out and adjusts Calibrations from Control Panel
• Agency Approvals: ETL, CE
• Ultra Friendly Controls
•–Year or , Cycles Limited Warranty
• Save enable/Save disable
• Vacuum check to verify muffle closure
FEATURES:

4
TECHNICAL DATA:
ELECTRICAL RATINGS:
Volts: -VAC, / Hz, Watts: W
-VAC, / Hz Watts: W
DIMENSIONS NEYFIRE T:
Width: mm (.”)
Depth: mm (.”)
Height Closed: mm (.”)
Height Open: mm (.”)
WEIGHT NEYFIRE T:
Furnace: kg (lb)
Shipping: kg (lb)
OPERATING CONDITIONS:
Allow the furnace to warm to room temperature before starting operation. Starting the NeyFire at cold temperature may
cause a false thermocouple error.
Relative Humidity: maximum %
PERFORMANCE:
Temperature Accuracy: ±°C from  to °C (±.°F from  to °F)
Temperature Uniformity: ± °C (± °F) at steady state.

5
RANGE OF FIRING PARAMETERS:
CERAMIC CYCLES:
Programmable Display in ax
Night Temperature (Night) °C (°F) °C (°F)
Start Temperature (Lo T) °C (°F) °C (°F)
Pre Dry Time (Pre Dry) :min : Min
Dry Time (Dry) :min : Min
Preheat Time (Pre Heat) :min : Min
Heat Rate (Rate) °C/min (°F) °C/min (°F)
Final Temperature (Hi T) °C (°F) °C (°F)
Hold with Vac (Hold V ) :min : Min
Hold Time “Air” (Hold) :min : Min
Vacuum Level (Vac %) , % ,% (always on)
Vacuum On Temperature (V start) °C (°F) °C (°F)
Vacuum Off Temperature (V stop) °C (°F) °C (°F)
Cool Time (Cool) :min : Min
2ND STAGE CERAMIC CYCLES:
Programmable Display in ax
Heat Rate (Rate) °C/min (°F) °C/min (°F)
Final Temperature (Hi T) °C (°F) °C (°F)
Hold with Vac (Hold V ) :min : Min
Hold Time “Air” (Hold) :min : Min
Vacuum On Temperature (V start) °C (°F) °C (°F)
Vacuum Off Temperature (V stop) °C (°F) °C (°F)
TECHNICAL DATA (CONTINUED):

6
ATTENTION:
Shipping damage should be reported to the carrier as soon as detected.
UNIT PACKAGE CONTENTS:
• One furnace complete with power cord • Firing Platform
• Vacuum tubing • Large Quick Cool Sagger Tray
• Display with Stand • pk Tapered Top FIring Pins
• Shelf Cover Plate Assembly • NeyFire T Quick Start ()
• USBStick
Neyfire™T Owner/Operators manual updates and additional furnace accessories are available on the DENTSPLY
Prosthetics website; www.prosthetics.dentsply.com
UNPACKING:
Save the box and other packaging material for future use in transporting the unit.
• Open the box.
• Remove packaging supports.
• Remove plastic bag.
• Remove all packaging material from in and around the furnace. The furnace should be located at least cm (") away
from walls, shelves and heat sensitive materials. (See page  for overall furnace dimensions)
WARNING:
Never operate the furnace in close proximity to combustible materials or place materials on top of the unit.
Do not use extension cords with this equipment.
Do not position the unit in a way that blocks access to the power cord inlet socket or the wall outlet.
NEYFIRE T INSTALLATION:
NEYFIRE T FIRST POWER UP:
Note: Power Failure screen will appear at start up. Clear by pressing either O or cancel.
• Connect the S video cable to the display and the furnace. The
display label should point to the display.
• Turn on the Power Switch located on the right side panel.
• After the muffle reaches the up position remove additional
packaging.
•Place firing platform in center of firing table.
Failure to do so will damage the furnace!
• Turn the Power Switch OFF.
• Read the General Operations on the following
pages before turning the NeyFire T ON again,
INSTALLATION INSTRUCTIONS:
S video cable connection On/Off Main Power /Cord
Inlet
Vacuum
Power Cord
Vacuum Hose
Firing Platform

7
OVERVIEW:
FUNCTION DESCRIPTION:
• Turn on the power switch located on the right side panel
• A number of tests (calibration, motor lift, etc.) are performed before operation begins that takes approximately 
seconds.
• The NeyFire T will go into Night Mode with the display shown below. This is the home screen.
The NeyFire T stores , ceramic firing programs. These programs are organized into  groups based on the
manufacturer. Pressing the Ceramic button on the home screen displays the  manufacturers’ buttons.
Press: Display Shows:

Each manufacturer button holds  different brands of Ceramic. Pressing one of the manufacturer buttons displays the 
ceramic brands. Press the Return button to go back.
Press: Display Shows:
Each of the  brands of Ceramic holds  cycles. Use the up arrow or down arrow or a stylus to select a particular cycle.
Press Display Shows:
one of
the
Material
Buttons
on previous screen
The selected cycle is highlighted with a blue bar. Press to view the program parameters. To run the Program press
Return goes back.
Press Display Shows:
to Start
Program:
GENERAL CERAMIC OPERATION:
8

9
GENERAL CERAMIC OPERATION (CONTINUED):
Once the button on the control panel is pressed the display changes to cycle run mode. Returning to the home screen
will display a temperature profile graph, current position in the cycle, time remaining in that cycle and overall time
remaining.
Once the Lo Temp is achieved, the muffle is lowered to the starting position. The dry starting position is adjustable in
Tools / Setup from the Night Mode screen.
Each of the three times (Predry, Dry, Preheat) count down. A vertical line marks the position on the graph. During the Dry
time the muffle is lowered in small steps so that it closes as the Dry time expires. Once the muffle is fully closed the
vacuum pump will cycle to verify a complete seal.
After the Dry time is completed the muffle
stays in the closed position during the
programmed Preheat time.
At the end of the Heat time the vacuum pump
is activated if requested. After a sufficient
vacuum is achieved the temperature increase
to the Hi Temp (Rate) is performed.

10
GENERAL CERAMIC OPERATION (CONTINUED):
At the end of the Rate the hold time is
activated. Either Hold with air or Hold with
vacuum then Hold with air. This total time is
counted down to zero.
At the end of the hold times the vacuum is
released and the cool time is accessed. The
muffle opens a short distance and then
opens in small steps for the remainder of the
programmed cool time.
After the Cool segment is complete the NeyFire T returns to the program listing screen with the just completed cycle
highlighted. Using the Up or Down arrow button or a stylus, select another program and the Start button to start the cycle.
EDITING PROGRAM PARAMETERS:
Pressing changes the screen to the Edit
screen which lists program parameters. Use
the up and down arrow buttons select the
particular parameter to be edited. In order to
change a program that has already started,
simply edit the parameters desired and press
load.

11
– saves changed values
Only available when SAVE
ENABLE is selected under
“Advanced”.
– loads changed values
– restores all factory default
values
– returns to the program list
screen for the selected
material
To create a new program:
– copy program values
– paste program values
Edit the selected firing program name. Select
a program from one of the listing screens and
then press Program Name. Once the name is
edited, press enter.
GENERAL CERAMIC OPERATION (CONTINUED):

12
GENERAL CERAMIC OPERATION (CONTINUED):
BUTTON TABLE:
The soft keys are used for editing and firing cycle control. The keys are described individually in the following list:
The Favorite’s button allows the user to access saved frequently fired programs.
Fast Cool setting: toggles ON/OFF. The Fast Cool feature turns the vacuum pump on after the cycle has
completed the cool segment. The vacuum pump runs until the muffle temperature is cooled to the current
LoT. When this is active, the thermometer will fill blue.
Idle Temperature is the LoT of the previously fired program. This icon will be visible when the NeyFire T is in
Idle Mode.
Night ode: Muffle closes when temperature reaches a programmed Night Temperature to prevent moisture
absorption. Can also be activated during a cycle.
The Start button will commence the selected program.
Abort will cancel any program no matter where in the firing cycle.
uffle Up movement.
Pause muffle movement.
uffle down movement.
This Search button shows the program parameters for the particular program selected. Can also be used for
editing.
The Load button lets the user load the selected program. It also allows the user to change parameters on a
program that is already running.
The Save button allows the user to sav any changes made to a particular program.
The History button shows the last  programs that were run.

13
GENERAL CERAMIC OPERATION (CONTINUED):
OPTIONAL FAST COOL DOWN AFTER A FIRING CYCLE:
The fast cool down button shows up in the lower right hand side of the display screen. When activated the vacuum pump
is turned on after the furnace complete the firing cycle and run until the muffle temperature is cooled back down to the Lo
T. Once the vacuum pump is turned off the muffle temperature may increase for a little while before finally cooling to the
Lo T.
The fast cool option is turned on when the thermometer icon is full and turned off when it is empty.
DUAL-STAGE OPERATION
All of the Ceramic programs have the capability of being programmed as two stage cycles. The two
stage cycles can be used for crystallization or tempering. The default setting is  or single stage.
Pressing the button toggles it between  and +. Selecting  stages enable  additional parameters
to control the second stage. These parameters do not appear until the nd stage is activated.
The nd stage parameter values are edited with the same method as the st stage
parameters. See description on previous pages.
HOLDING A VACUUM:
Holding vacuum through the Hold time requires that the V stop temperature is equal to or higher than the Hi Temp and the
Hold Vacuum Timer be set to the desired time hold a vacuum at the Hi Temp.
NEXT STEP OPERATION:
Next Step button appears on the home screen. Pressing the button moves to the cycle to the next parameter in ceramic
firing cycle.
ABORT A FIRING CYCLE:
Press the abort button located on the home screen will abort a firing cycle. The red stop button will only appear when a
firing cycle is active.

Press the Tools button to access setup functions and other special programs:
This selection allows the date and time to be set. Use the up/down keys to change
values, Press Apply to save
NIGHT TEMP:
This is the muffle temperature during the Night Mode Start up screen. When the Idle/Night key is pressed
during a firing cycle the NeyFire T enters the Night Mode after the cycle is completed. Once at the
programmed Night Temp the muffle will lower automatically to its closed position.
HIGH ALARM TEMPERATURE:
This functions prevents accidental programming of higher than expected temperatures. Whenever the muffle
temperature reaches the programmed value the cycle is interrupted with Err . Do not lower this parameter
until you have verified that the programs and firing charts currently loaded into the NeyFire do not have Hi
Temp that exceed the Max Temp.
GENERAL CERAMIC OPERATION (CONTINUED):
14

15
GENERAL CERAMIC OPERATION (CONTINUED):
DRY POSITION:
For a firing cycle with a programmed Predry Time this value determines the muffle position . – muffle stays
full open.  – muffle is fully closed, ( approximately halfway open).
C/F DEGREES:
This setting determines the temperature units for the NeyFire. When °F is selected the measured vacuum is
displayed in inHg.
BAROM. PRESSURE:
The value is the local atmospheric pressure reading in mm Hg. Typical mm at sea level and goes down
with altitude, approximately mm per M (” per FT). Be advised that local weather reports use a
normalized value and not the local barometric pressure which is effected by the local altitude.
AUDIO:
This selection changes volume of the alarm tone.  (low tone) – 
DOWN TIMER:
This timer is activated after a firing cycle and automatically lowers the muffle after the programmed time to
conserve energy. The muffle will automatically close after  minutes of inactivity.
AUTO CLOSE TIME:
This timer is activated after a firing cycle is completed. Once the muffle is fully raised the time will start and
at the end of the time the muffle will close to conserve energy. The max setting is  minutes and the
minimum setting is  (muffle will stay raised).
This selection performs a purge cycle without vacuum. The cycle starts at the time of selection and heats
to ˚C and holds for : minutes. At the completion of the hold time the purge cycle is complete.
This selection performs a purge cycle under vacuum to remove silver contamination. Place the carbon rod
onto the platform before starting a cycle. The cycle starts at the time of the selection, the furnace pulls full
vacuum and heats to ˚C and holds for : minutes. At the completion of the hold time the vacuum
releases and cools to ˚C. Once the temperature has cooled to ˚C the purge cycle is complete.
This button starts a self test of the NeyFire T.
Activating the shipping mode will raise the muffle and prevent the muffle from firing. This should be
activated before shipping the unit to different facilities or being sent to repair.
NOTE: Make sure unit is cooled to room temperature before packing.
This cycle is to remove moisture from the muffle. The pump will pull down and hold vacuum while the
temperature raises to ˚C. Once the Hi T is reached the vacuum will release and the muffle will open.
This will repeat until the count reaches .
This button displays the software version and the serial number of the NeyFire T.

This section requires the user to enter “DENTSPLY” to access special functions (Vacuum Cycle, Calibrate,
DENTSPLYService, Shipping, Save Enable/Save Disabled)
This cycle is to test vacuum leak rate. The pump will pull down and hold full vacuum for 
minutes without recycling. The leak rate should be less than mm Hg. (Note: This test
should be performed on a hot dry muffle.)
(Temperature): User adjustable calibration of temperature offset Max +˚C, Min –˚C.
Positive values raise muffle temperature to the desired temperature and negative values
lower the temperature. Entering the  in the offsets resets the original factory calibration.
If consistent overfiring is occurring the appropriate value(s) should be reduced by the
estimated number of degrees that it is overfiring. The estimated number of degrees that the
furnace is underfiring should be added to the appropriate Cal value(s). Once the value(s) is
entered press send Cals.
(Vacuum): User adjustable calibration for vacuum is Max +, Min –. Positive values raise
ambient pressure and negative values lower ambient pressure. Entering the  in the offsets
resets the original factory calibration.
If the operator cannot achieve acceptable firings or full vacuum, contact DENTSPLY Service
for further calibration instructions.
This selection requires a code to access special functions. These functions require
specialized technical equipment and training to effectively use. Contact the DENTSPLY
Prosthetics’ Service Department for details and requirements.
Save Enable allows all programs to operate as normal and can be changed. The operator has
the ability to edit firing cycle parameters.
Save Disable allows all programs to operate as normal but cannot be changed. The operator
is also NOT able to edit firing cycle parameters.
GENERAL CERAMIC OPERATION (CONTINUED):
16

Press this button to access data transfers feature.
To backup the programs saved on the controller, insert the USB device that was supplied and
press BAC UP.
To restore the programs that were saved to the USB both by backing them up or by editing
using the DENTSPLY Utility, insert the USB device and press restore.
Should a new version of software be released, the files would be downloaded to the USB
memory stick provided and the Flash button would be pressed. In order for the update to
take effect, the NeyFire T needs to be power cycled after the flash.
17
GENERAL CERAMIC OPERATION (CONTINUED):

18
GENERAL CERAMIC OPERATION (CONTINUED):
EDITING PROGRAMS FROM A COMPUTER ( PC COMPATIBILITY):
• Insert the USB memory stick that was provided into your computer.
• Open NeyFire folder.
• Double Click on DENTSPLYUtility
• To edit a manufacturer name, material name or firing program select Edit Program Files. Select the item you want to
edit or drill down through.
• To change Language or restore defaults selet Options.
• Once all the appropriate changes are made, select Save File. The modified program will be saved on the USB
Memory Stick.
• Insert Memory Stick into display. When stick is not in use replace with the plug or close access panel.
Note: • Units of measure Farenhheit.
• Press: and select Restore. This will prompt the user to select ok. The edited programs will show up on
the display.
Note: Please do not use any hard objects on the touch screen, intended for finger touch.
Port for
Memory Stick

19
WARNING:
This equipment contains dangerous voltages. Maintenance and repair work should only be performed by an
authorized service technician of DENTSPLY Prosthetics. See Product Service on page  of this manual for contact
information.
TO KEEP THE EQUIP ENT IN GOOD WORKING ORDER YOU SHOULD FOLLOW THE GUIDELINES BELOW.
• EXA INE THE EQUIP ENT REGULARLY FOR ECHANICAL DA AGE.
• DO NOT USE SOLVENTS OR LIQUID CLEANERS ON THE CONTROL PANEL.
CLEANING:
• CLEAN THE UNIT AS NEEDED.
• VACUU DUST AND DIRT FRO THE FURNACE RATHER THAN BLOW. THIS WILL INI IZE THE A OUNT OF AIR BORN
DUST PARTICLES.
• CLEAN EXTERIOR SURFACES WITH A SOFT, DA P CLOTH USING A ILD DETERGENT AND WATER.
• DO NOT I ERSE IN WATER!
MAINTENANCE:

20
WARNING:
Service of this equipment should be done only by qualified personnel. Failure to comply may result in personnel
injury and/or property damage.
PROBLEM CAUSE SOLUTION
No power to unit Power switch. No line voltage. Place switch in ON position. Check wall
socket for line voltage.
Slow heating (Check muffle Rate programmed too low. Ramp rate may Verify the programmed Heat Rate value
down position) not be achieved at higher temperatures. is the desired value. Adjust ramp rate
Muffle deterioration. lower based on heating chart. Contact
DENTSPLY Service Department for
instructions on how to check muffle
resistance.
Firing Platform hits muffle Misalignment Adjust white firing platform position so
that it is centered on the aluminum door.
Displays “Err  Over temp” The muffle temperature exceeded °C. Contact DENTSPLY Service Department.
Displays “Err  Open TC” The thermocouple opened. Replace thermocouple.
Displays “Err  Max Temp” The temperature exceeded the Hi Temp exceeded Hi alarm temp in
Max temperature programmed system set up menu. Contact DENTSPLY
Service Department.
Displays “Err  No Vacuum” No vacuum detected in the chamber Check pump connections
Displays “Err  Low Vacuum” Little vacuum detected Check door seal
Displays “Err  Open Muffle” The muffle heating wires opened Replace muffle
Displays “Err  TC Cable” The thermocouple wiring malfunctioned Contact DENTSPLY Service Department.
Displays “Err  Motor The muffle position reading is out of range Check for correct connection of Motor Pot
Position” cable
Displays “Err  Wrong TC” The thermocouple was incorrectly installed Reverse thermocouple leads on the
circuit board.
Displays “Err  Memory” The microprocessor cannot read or write Contact DENTSPLY Service Department.
to the external Dataflash IC
Displays “Err  Slow Motor” Muffle travels up or down for more than Check for obstructions
 seconds
Displays “Err  AC Drive” The control cannot turn off current Contact DENTSPLY Service Department.
to the muffle
Displays “Err Hi Motor Current” Actuator is drawing excess current. Contact DENTSPLY Service Department.
Displays “Err DC Power” V DC is no longer in valid operating range. Replace power supply.
Displays “Err Not Closed” Muffle was no able to close and creat a Check door seal.
proper seal.
Dispalys “Fail Safe Err” Communication between Micro Controllers Contact DENTSPLY Service Department.
is not working correctly.
Displays “Serial Comm Err” Display has lost communication Check RS connection.
with the furnace. Contact DENTSPLY Service Department.
ERRORS: