Baker Hughes Valve Regulator Pilot VRP-1500-CH

1. Clean and inspect the adjustable orifice assemblies. Refer to Number 3, Page 10.

2. Check integrity of VRP-CH pilot seats. Refer to Number 5, Page 10.

3. Soap test all diaphragm mating surfaces and the adjustable orifice assembly to check for leaks. Refer to Number 6, Page 10.

4. Replace rubber goods using the Becker VRP-CH pilot seal kit if necessary.

5. Confirm power gas supply pressure is correct. Refer to original Baker Hughes invoice paperwork for proper power gas setting.

6. Check sensitivity of the VRP-CH pilot. Confirm proper cylinder balance pressures. Refer to Adjustment Procedures, Equation 1 or Equation 2, Page 8.

7. Observe the operation of gauges and replace if defective.

8. Perform an internal friction test. Refer to Page 10.

9. Inspect and verify the proper operation of all VRP-CH accessories. Refer to the technical manual included with each specific instrumentation accessory for further instruction.

Friction may occur if the diaphragms were not centered properly during installation or dirt has accumulated inside the pilot. To test for this friction: 1. Adjust the pilot using the initial adjustment procedure.

2. With both cylinder output gauges balanced, turn the adjusting screw slightly clockwise to decrease cylinder bottom pressure. Once the pressure reading on the gauge stops falling, turn the screw back in the opposite (counterclockwise) direction. The gauge arrow should immediately reverse.

3. Follow the reverse procedure on the cylinder top gauge.

4. If either of the gauge needles dips first before climbing, the pilot has friction and must be taken apart and reassembled.;