Air Exchange with Programmable Controls Vulcan Box Furnace Owner & Operator's Manual Models: 3-550A 9493985 230V 3-1750A 9493990 Description Safety ............................................... Features ........................................... Applications ...................................... Installation ........................................ Operating Instructions....................... Control Panel Description ................. Specifications ...................................
FEATURES • High Performance Hybrid Muffle • • • • • • • Longer life and more durable than fiber Faster heating and faster cooling than firebrick Wide operating temperature range 50°C (122°F) --- 1100°C (2012°F) Smooth, low force vertical lift door, with roll back action Gives maximum access with minimum vertical space Programmable air exchange using preheated makeup air and Venturi exhaust (ASTM D3174).
INSTALLATION INSTRUCTIONS UNPACKING CAUTIONS: Carefully unpack and remove the furnace from its shipping carton. Save the carton and other packing material for future use in transporting the furnace. The furnace shipping carton contains the following: • One furnace complete w/ power cord • Owner's & Operator's Manual • Ceramic floor tray (shipped in the muffle) • Muffle shelf (Model 1750 only) Shipping damage should be reported to the carrier as soon as detected.
OPERATIONS RUNNING A PROGRAM: The furnace has 9 three stage programs and one single temperature hold program. The furnace is sold with the program parameters set to the factory defaults which can be used for testing. First time operation will require the user to enter their desired parameters into one of these programs. 1.
RAMP RATES (R) (0 - 40°C/minute) 1. Pressing the Rate key display's the current value of the R1 parameter followed by 3 blanks for a new value. • For example: R1 8.0°C/M ->_ _ _ • The corresponding LED will also light to indicate the selected stage and parameter. 2. Use the digit keys (0,1,2,...,9) to enter the desired parameter value followed by the ENTER key. The new parameter is now stored in memory.
2. The air exchange fan produces about 20CFM of flow when operated at full speed. The vent hood or system being used for the furnace should have sufficient capacity to accommodate this airflow. 3. The air exchange operation may be controlled for 10 different settings, ranging from 0 to 9 (off to full on). The maximum setting of 9 on the control performs approximate 5 air exchanges per minute. The curves shown on page 13 show approximate air changes vs. fan setting.
• For example: End = 14:30 -> _ _ :_ _ • The computer uses a 24 hour clock. Therefore, the completion time will be 2:30 PM. 6. Pressing the Delay Start key again shows the actual time (Now). • Pressing the key additional times will cycle through the other parameters. Press the Escape the function. D ESC key to stop Running A Delay Start Program: 1. Select the desired program number (See previous section on RUNNING A PROGRAM) key to display the delay days. 2. Press the Delay Start 3.
CONTROL PANEL DESCRIPTION °C / °F changes the temperature from °C to °F and back. This key is not active when viewing parameters. LCD Display displays the furnace muffle temperature, program count down time, and program number. During parameter programming the display shows the current value and new value for confirmation. It signals program operation by flashing the colon in the program time. Temp Rate key displays the current program's heat rates in degrees per minute.
SPECIFICATIONS PARAMETER - Temperature Range: 50°C (122°F) - 1100°C (2012°F) / 1° Resolution - Hold Time Range: 0:00 - 99:59 (hours:minutes) / 1 Min Resolution - Ramp Rate Range: 0 - 40°C / minute (72°F) / 0.1°C Resolution - Temperature Accuracy: ± 5°C (± 9°F) at steady state - Muffle Temperature Uniformity: ± 8°C (± 15°F) at steady state ELECTRICAL Voltage Nominal: Voltage Range: @ 50/60Hz 3-550A 230V 200-240V Steady State Current: Amps @ 230V 3-1750A 230V 200-240V 9.6A 19.
3-1750A PERFORMANCE CURVES 1200 1200 Temperature (°C) 1000 1000 800 800 600 600 400 400 200 200 00 00 20 20 40 40 60 60 Heat Fan = 0 Cool Down Fan = 1 80 80 100 100 120 120 140 140 Time (min.) TIME(min.) Cool Down Fan = 0 * Heat Up Fan = 9 160 160 180 180 200 200 Heat Up =1 Cool Down Fan = 9 Test Conditions: Nominal line voltage, no load in the muffle only floor tray, full power applied to the muffle for the Heating Curve.
SETUP & MAINTENANCE SETUP: The Vulcan furnace goes through a self test that lasts approx. 6 seconds each time power is applied. After this test, the display will show the word "Setup?" for approximately 5 seconds. In the Setup mode, several different options are available for the user to select. The first is the END OF PROGRAM operation which allows the user to select how the furnace should operate at the end of the program.
TROUBLESHOOTING ERROR CODES: Err codes can be cleared from the display by turning the front panel power switch off and then on again. Code Description Err 1 Over Temperature Err 2 Open Thermocouple Err 3 Temp > Tmax Possible Cause Temp > 1120°C, shorted thermocouple, shorted triac, shorted optotriac, wiring connections, computer PCB Open TC tip, connection to TC, TC to (TC) PCB connection, computer PCB Muffle temperature has exceeded the programmed limit temperature TMAX (see SETUP?).
TROUBLESHOOTING THE VULCAN "3-" CONTROL PROBLEM Dead, Not Operating No Power / Display CHECK LIST / CAUSES - Check power receptacle or outlet for power - Check line or power cord connections - Turn on green power switch Not Heating During Program Operation Does the green power switch light when the Start key is pressed? No: - Is door completely closed? Door switch may be interrupting power.
ACCESSORIES DESCRIPTION PART NUMBER Tongs; 25cm (10") Stainless Steel Tongs; 30cm (12") Stainless Steel Tongs; 36 cm (14") Plated Steel Tray- Bottom, Model 550 Tray- Bottom, Model 1750 Shelf - free standing, Model 550 Shelf - Model 1750 Muffle Hardening Agent Temperature Pellets, Bottle of 25 705 °C (1300 °F) 815 °C (1500 °F) 9390014 9390015 9491010B 9353057 9353060 9493327 9493396 9491006 Service Manual, Vulcan 9363049 9490911 9490912A PRODUCT SERVICE Three methods of product service are available f
WARRANTY WARRANTY: Except with respect to those component parts and uses which are herein after described, DENTSPLY Neytech warrants this furnace to be free from defects in material and workmanship for a period of two years from the date of sale.
