5 troubleshooting, Troubleshooting, 5troubleshooting – Trebor PC7 User Manual
Page 15
PC7 CONTROLLER OPERATION / MAINTENANCE MANUAL
PAGE 15
5
TROUBLESHOOTING
Controller Will Not Operate or Cycles Erratically
Cause:
Solution:
• PC7 cap seal failure
• Remove caps from PC7 and replace PTFE cap seal.
• Debris in shuttle valve
• Isopropyl alcohol clean the shuttle sleeve and spool assy.
• Insuffisant air pressure
• Increase regulated supply pressure or check control
valves for proper operation.
Rotate PC7 speed control screw CW until it stops. Then
readjust for correct speed.
• Adjustment Screw Seal failure
• Replace adjustment screw assy.
• Spring bar failure
• Spring bar needs replacement if not flat.