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For example: If we want to heat a 300 ° °°°°F furnace to 1350 ° °°°°F over a 6 hour period, we would calculate as follows: ENDING TEMPERATURE (° °°°°F).. ............ ............1350 STARTING TEMPERATURE (° °°°°F) .......... ............-300 DIFFERENCE (° °°°°F).................... ........................1050 DIVIDE THE TEMPERATURE DIFFERENCE.....1050 1050 1050 BY THE NUMBER OF HOURS. ............ ............ ... 6 5 3 TO GET DEGREES PER HOUR ............ ............ ..... .175210 350 We have illustrated above how to figure the rate for 5 hours and for 3 hours. Of course, to decrease the temperature, we would simply subtract the ending temperature from the starting temperature (in other words - reverse the procedure). Also, a decreasing rate is limited by how long it takes for a heated mass to cool when the heating elements are turned off (in other words, the larger the flask, the longer it takes to cool). 16 PROGRAMMING YOUR WW PROGRAMMER You can enter your preferred burnout cycle at any time to suit your operation. You can even add four more “Permanent Programs”. To make your own program remember “ALL PROGRAMMING BEGINS WITH [ ldLE } ON THE DISPLAY”. ACTION DISPLAY COMMENTS 1) Apply Power 2) Press 4 3) Press 1 4) Press ENTER [ ldLE ] [ USEr ] [ 1 ] [ rA 1 ] All programming begins with [ ldLE ] Path to the USEr program This assigns your custom program a number (use 1 thru 4) The programmer is asking for the 1st segment rate of temperature increase or decrease 5) Press 1250 [ 1250 ] 1250 ° °°°° F per hour 6) Press ENTER [ ° °°°° F 1 ] The programmer is asking for the temperature you want to reach in the 1st segment 7) Press 300 [ 0300 ] This is the temperature for wax elimination (300 ° °°°° F) 8) Press ENTER [ Hd 1 ] The programmer is asking how long you want to hold 300 ° °°°° F 9) Press 100 10) Press ENTER [ 01.00 ] [ rA 2 ] One hour at 300 ° °°°° F The programmer is asking for the 2nd segment rate of temperature increase or decrease 11) Press 280 [ 0280 ] 280 ° °°°° F per hour 12) Press ENTER [ ° °°°° F 2 ] The programmer is asking for the temperature you want to reach in the 2nd segment 13) Press 1350 14) Press ENTER [ 1350 ] [ Hd 2 ] This is the temperature for the second burnout (1350 ° °°°° F) The programmer is asking for how long you want to hold 1350 ° °°°° F 15) Press 200 16) Press ENTER [ 02.00 ] [ rA 3 ] Two hours at 1350 ° °°°° F The programmer is asking for the 3rd segment rate of temperature increase or decrease 17) Press 450 [ 0450 ] 450 ° °°°° F per hour (cooling down) 18) Press ENTER 19) Press 900 [ ° °°°° F 3 ] [ 0900 ] The programmer is asking for what temperature you want to reach in the 3rd segment This is the temperature for the final burnout (casting temperature) 20) Press ENTER [ Hd 3 ] The programmer is asking how long you want to hold 900 ° °°°° F 21) Press 1400 22) Press ENTER [ 14.00 ] [ rA 4 ] Fourteen hours at 900 ° °°°° F The programmer is asking for the 4th segment rate of temperature increase or decrease 23) Press 0 24) Press ENTER 25) Press 7 26) Press 9999 27) Press ENTER 28) Press ENTER [ 0000 ] [ ldLE ] [ ALAr ] [ 9999 ] [ ldLE ] [ STRT ] 0 ° °°°° F per hour indicates end of program This is the alarm temperature request This sets the alarm out of range (turns it off) If you wish you may enter a delay start at this time If no delay time, then the temperature inside the furnace. You are now cooking! NOTE: Should you have any difficulty entering a custom program, call us and give us the rates and times. We will supply step by step instructions. 17 HOLD (SOAK) TIME “HOLD” or “SOAK” time means heat-soaking the flasks at the end of each segment. You can hold the temperature in each segment up to 99 hours and 99 minutes. PRESENT STATUS “PRESENT STATUS” shows where the furnace is during firing. This is specially useful for firing that have heating-up and cooling-down segments. To use “PRESENT STATUS”, press 5 on the key board during a firing. The current segment will display momentarily. SKIP SEGMENT “SKIP SEGMENT” works only during firing. To skip a segment, press 9 on the key board. [ SstP ] will display (if you change your mind and do not want to skip the segment, do nothing and the firing will continue as it was). If you still want to skip the segment after pressing 9, press ENTER and [ rA ] will appear along with the segment number you just skipped to. DELAY FIRE The “DELAY FIRE” programs the furnace to start its firing run (burnout) at a later time. It zeroes out after each completed firing. To use the “DELAY FIRE” again, you need to reset it each time you start. Enter the “DELAY FIRE” after you have chosen your program and you reach [ IdLE ] on the display. Press 3 on your key board. Enter the delay in hours and minutes (such as 3 hours and 45 minutes is 345 - your display will show [ 03.45 ] ) and the press ENTER. The display will then alternately display [ dELA ] and the time remaining for the delay. WARNING: NEVER LEAVE YOUR FURNACE UNATTENDED NEAR THE END OF A F...

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