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CAUTION: The INFINITY should be serviced only by qualified service technicians. Be sure to
unplug the power cord and wait for the furnace to cool before performing any service opera-
tion. For help with operating or servicing your Jelrus equipment, please call Jelrus any time
between 9:00am and 5:00pm Eastern time.
Toll Free: 1-800-JELRUS-1
In New York: 1-516-942-0202
FAX 1-516-433-7684
TEMPERATURE CALIBRATION
Infinity Multi-Stage Burnout Furnaces come complete with temperature Calibration Tablets (2) which accurately melt
at 1500°F (816°C). (Re-Order Calibration Tablet Kit - PN 15291).
Your Infinity is factory calibrated. It is not necessary to re-calibrate on installation. If it becomes necessary to
re-calibrate in the future, use the following calibration procedure.
Temperature Calibration with Calibration Tablets (Figure 3)
1. Place a short metal casting ring towards the front center of the chamber.
2. Place a ceramic tray or a small piece of casting ring lining material on top of the ring. Place a tablet
in the center of the tray.
3. Program the Infinity as follows:
HEAT RATE TEMP HOLD TIME
STAGE 1 FULL 1200°F (649°C) 0:05
STAGE 2 25°F (14°C) 1700°F (927°C) 0:00
STAGE 3 NO * *
STAGE 4 NO * *
*Though any number may appear, the unit is deativated when “NO” is selected for HEAT RATE.
4. Close the furnace door and press START / STOP.
5. When the furnace temperature attains 1400°F (760°C) as indicated on the Main display, open the
furnace door slightly and begin to check for the melting of the of the tablet. Continue to do this at each
25°F (14°C) interval, opening the furnace door just enough to determine at a quick glance if the
tablet has begun to liquify at the edges.
SERVICE
CLEANING INSTRUCTIONS
Clean exterior of furnace only by wiping unit with a damp cloth coated with a mild non abrasive cleaner.