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[zscw1]

C5=800   T5=20    Go from 800 to 1145 in 20
C6=1145  T6=7     1145 reached where it will be held for 7mins
C7=1145  T7= ?    from 1145  crash cool to 900
C8=900   T8= 30   
c9=900   T9= -121  at 900 hold for 30 then end program

Whats my T7 value  to crash cool down to 900

[Kkane]

If you know the duration time when cooling from 1145 to 900, you can fill that number there.

Or if you don't know, you can consider using safety start feature and set T7 to 1. To use safety start feature, you need to change Hy-1, Hy-2 and Hy all three to a very small number. So the timer will be held if your reading temp is far away from your set temp.

See right section on page 7 of its manual for details.

[zscw1]

So to confirm  Hy-1=1, Hy-2=1 and Hy=1
C1=70    T=30   go from room temp to 400 in 30 mins
C2=400   T=10   maintain 400 for a 10 min soak
C3=400   T=20   go from 400 to 800 in 20 mins
C4=800   T=10   maintain 800 for a 10 min soak
C5=800   T=20   go from 800 to 1645 in 20 mins
C6=1645  T=7    maintain 1645 for 7 mins
C7=1645  T=1    Crash cool
C8=900   T=30   When temp gets to 900 soak for 30 mins
C9=900   T=-121 Terminate program and cools to room temp

So if above is all correct,(please help if it isn't) will the program automatically start again when the temperature gets to 70 ?  I'm not wanting it to but worried that it might.

[Kkane]

Your program looks good to me. Please try and see how it works.

No, it will not automatically restart from step 1.

-121 means, it will jump back to step 1 and stop at there. You need to manually restart/run the program if you need to.