12
Potentiometer adjustment (if fitted)
The potentiometer is factory set to operate over 90
degrees and should not require adjustment. It may
be necessary to adjust the potentiometer if the stop
bolts have been adjusted or the POT has slipped out
of range.
Move the valve to the fully closed position and
ensure the stop bolts are correctly set.
Note there are no stop bolts in ROM 1/A.
Remove the potentiometer mounting screws to
release the drive gear and rotate the gear so that a
nominal 50 Ohms resistance pot value is measured
across terminals 10 and 11.
Replace the pot assembly ensuring the gears are
engaged and mounting screws are tight.
Commissioning
