I just acquired a JOBO Process Timer 4.
I have tried every combination of button pushing I can think of to get it to work.

Here is some of what I have tried:
1.) On the minute side of the timer I have set all the dials to zero for all 4 steps.
2.) On the seconds side of the timer I have set the dial for step 1 to 5 seconds. Step 2 to 10 seconds, step 3 to 15 seconds and step 4 to 20 seconds.
3.) With the timer power switch set to on, I pressed the start button and the display lights up for step 1 and I press the recall button. I wait 5 seconds and nothing. No numbers in the display and no beeping to alert me that time is up.
4.) Repeat the same for remaining steps and I get the same results.

I have tried other combinations like pressing the start button and the recall button at the same time to see if that works and same result.

I have tried quickly pressing the start button twice, and the same result.

This timer can’t be that complex to operate but apparently this old guy can’t figure it out.

If someone would enlighten me I would greatly appreciate it.

Regards
Gary