Hydrometers Operation and Maintenance Manual - Baseline Systems

Troubleshooting, Cont.
I. Excess or Insufficient Output Pressure
• Inspect the control hoses, connectors, shuttle valves and
adapters. Replace as necessary.
• Rotate the adjustment screw atop of the pilot valve. Rotate
clockwise to increase pressure or counterclockwise to reduce
pressure as necessary.
• Remove and clean the finger strainer. Replace if necessary.
• If this fails to balance the pressure, try the following procedure:
- Unscrew and remove the throttle housing (12) at the
bottom of the pilot valve.
- Remove the throttle pin (14) from inside the housing.
- Wrap the throttle pin (14) with Teflon tape and re-insert
it into the housing.
- Re-insert and tighten the throttle housing into the pilot
• Replace the pilot valve.
J. Excess or Insufficient Input Pressure
• Inspect the control hoses, connectors, shuttle valves and adapters. Tighten and replace as
necessary.
• Remove and clean the finger strainer. Replace if necessary.
• Repair or replace the pilot valve.
K. Excess or Insufficient Flow Rate
• Inspect the control hoses, connectors, shuttle valves and
adapters.
• Tighten and replace as necessary.
• Rotate the adjustment screw on the top of the pilot valve.
Rotate clockwise to increase flow rate or counterclockwise
to reduce the flow rate as necessary.
• Clean and check the orifice and gaskets. Replace as
necessary.
• Remove and clean the finger strainer. Replace if necessary.
• If this fails to balance the pressure, try the following
procedure:
- Unscrew and remove the throttle housing (12) at the
bottom of the pilot valve.
- Remove the throttle pin (14) from inside the
housing.
- Wrap the throttle pin (14) with Teflon tape and
re-insert it into the pilot valve.
• Replace the pilot valve.
22 • Hydrometers Operation and Maintenance Manual