Type PS/80-1
5
TROUBLESHOOTING
Table 2.
Troubleshooting for Type PS/80-1 Pilots
SYMPTOMS
CAUSE
ACTIONS
Desired set point is not reached
Calibration spring (key 5) is too weak
Check the springs catalog and replace it
with a stronger one
Leaks from pilot connections
Check pilot feed connections and
proper gas flow feeding
Outlet pressure drops well below set point
Filter (key 41) is clogged preventing proper
through-flow of gas
Clean or replace filter
Pad holder (key 45) is swollen preventing
proper feed flow
Replace pad holder
Pad holder (key 29) is swollen preventing
proper feed flow
Replace pad holder
Outlet pressure increases over set point
Faulty sealing of pad holder (key 45)
Replace pad holder
Faulty sealing of pad holder (key 29)
Replace pad holder
Slow response to changes in gas demand
Insufficient flow rate of valve seat (key 25)
Increase flow by means of register/pin screw (key 24)
Over large calibration jet (key 18)
Replace calibration jet with a smaller one
Overly rapid response to changes in gas
demand, i.e. Hunting
Excessive flow rate of valve seat (key 25)
Reduce flow by means of a pin screw (key 24)
Calibration jet (key 18) is too small
Replace calibration jet with a larger one
Incorrect internal parts assembly
Check clearance between lever (key 36)
and valve seat (key 25)
