Pressure Regulation For Xhp1000; Adjustment Instructions For Xhp Units With Electronic Control Caterpillar Engines - Doosan XHP1000WCAT-T4i Operation And Maintenance Manual

Maintenance

Pressure Regulation for XHP1000

Normally, regulation requires no adjusting, but if proper adjustment is lost, proceed as follows:
Adjustment Instructions for XHP units with Electronic Control Caterpillar
Engines.
The operating pressure of this unit was set at the factory to the maximum rating (at full speed).
See General Data. Perform these steps prior to starting the unit:
1. Disconnect one end of the tension spring (G) by loosening nut (E).
2. With the Butterfly Valve in the fully closed position, adjust the bracket and
linkage so rod (L) hits the bottom of the air cylinder (AC).
3. Secure all components while in this position.
4. Release the linkage to the open position.
5. Loosen jam nut (H) on rod end bearing.
6. With the rod end bearing secure, turn rod (L) in air cylinder one full turn
clockwise (CW) as viewed from rod end. This opens the Butterfly Valve slightly.
7. Secure jam nut (H) against rod end bearing.
8. Move linkage (C) to closed position and verify that travel is positively stopped
by rod (L) reaching the bottom of the air cylinder. The Butterfly Valve should not
seat closed.
9. Release linkage (C) to open position. Re-attach spring (G) and adjust nuts (E
& F) so there is zero tension on the spring (but no slack either).
10. Rotate linkage open and closed several times. Ensure linkage is not binding.
Start unit and monitor separator tank pressure.
11. The target pressure is 50 to 80 psi while operating at start pressure.
Operation & Maintenance Manual
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