Resetting PS-1 Chuff Rate
This is from the instruction manual of another Protosounds steamer.
"You'll need a Z-4000.
1. Put engine on track, transformer handles off. Press Program. Display will read "00" and "PG".
2. Using "WST/HRN" button, scroll the top display to "27", then press "Bell Select". The transformer will power the engine in Reset, and run the protosounds to reset feature "27" (5 clanks, 2 clinks)
3. Raise the throttle from the "off" position and press the "program" button. This will release the transformer from the program mode without the engine leaving Reset feature 27.
4. With the throttle set low, press the "wst/hrn" button. You will hear a single bell, and the engine will begin to move forward with no chuff.
5. Reduce the throttle until the engine just stalls, and press "WST/HRN". You will hear a double bell. This is the motor speed where the chuff will begin.
6. Raise the throttle until the engine is running at the speed that you want the chuff to be fastest, and press "WST/HRN". You will hear 3 bells, and the engine will stop.
7. Bring the throttle to the "Off" position to complete the Reset feature.
Test the settings by running the engine. You may need to repeat the procedure to fine tune the settings. And remember you can always return to the Default settings by using Reset feature 18."
I remember having to do this a couple of times to get the chuffs to begin just as the engine starts moving.
Rod