ENTERING A CUSTOM PROGRAM
REMEMBER - ALL PROGRAMMING BEGINS WITH [ ldLE ] ON THE DISPLAY
Putting a program into your controller is the easiest way to understand its function.
Lets us begin with an 8 hour program. We use a slow steady rise in temperature to a maximum of 1350 °F (730 °C) in all programs (this is suggested by most investment manufacturers); then reduce the furnace temperature down to a casting temperature slowly.
Since we only have 8 hours, we will use smaller diameter flasks. We will program in 3 segments. You can program up to 20 segments if necessary.
SEGMENT 1 We will heat the furnace at a rate of 1250 °F (680 °C) per hour to a temperature of 300 °F (150 °C) and hold for 1 hour (this is our wax elimination cycle) - NOTE: OPERATOR
ATTENDANCE IS REQUIRED.
SEGMENT 2 We will then raise the furnace temperature to 1350 °F (730 °C) at a rate of 280 °F (136 °C) per hour (requires approximately 4 hours) and then hold at 1350 °F for 2 hours.
SEGMENT 3 We will then lower the furnace temperature to 900 °F (480 °C) for our casting temperature. We will program a 14 hour hold time for this temperature in case the operator is not ready to cast at the end of the 8 hour period.
NOTE: YOU CAN PROGRAM ANY FLASK CASTING TEMPERATURE YOU WISH. WE FIND THAT 900 °F IS A GOOD TEMPERATURE FOR CASTING 14K YELLOW GOLD IN MOST INSTANCES.
DELAY START: You can also delay the start of the program if you wish (see instructions following).
PROGRAMMING
1)Press keys slowly and firmly.
2)Before starting to program your controller, make sure all electrical connections are made.
3)At this time you must decide if you are going to program in °F or °C. Make sure controller is in the correct mode.
4)You can program any schedule you wish as long as it is in 20 segments or less and not over 99 hours in length.
5)The maximum temperature of the controller is 1700 °F (925 °C).
6)You can add a DELAY TIME on any program from 1 minute(00.01) to 99 hours and 99 minutes (99.99).
7)You can set the alarm on any program at any time by pressing 7 (ALARM) and
[ ALAr ] will appear on the display. Enter the new temperature and then press ENTER. [ ldLE ] will display or your program will continue the burnout in progress.
15
