To adjust the ram pressure on the VSMA :
1. Close the ball valve (R/S), the lever must be found to 90° regarding the ball valve
2. Unscrew and remove the protection cap of the adjusting screw of the VSMA valve (7)
3. Press the manual lowering button (ML)
4. Check the pressure gauge on the manometer (MAN) is around 5 bar. If it is 5 bar go to point 6, if it is
less then 5 bar go to point 5
5.
- Re-open the ball valve (R/S)
- Loosen the locknut (7)
- Tighten the screw (7) – one turn
- Tighten the locknut (7)
- Close the ball valve (R/S)
- Press the manual lowering button (ML)
- Repeat this procedure until the pressure is close to 5 bar
- Go to point 6
6. Put back and tighten the protection cap of the adjusting screw (7)
7. Re-open the ball valve (R/S)
To adjust the overpressure valve:
1. Refer to the hydraulic circuit of the NGV valve.
2. Close the ball valve (R/S), the lever must be found to
90° regarding the ball valve.
3. Open the manometer shut-off valve (6)
4. Unscrew and remove the protection cap of the
adjusting screw of the overpressure valve (1).
5. Loosen the locknut (1).
6. Start the 9.1 Overpressure Value control
procedure. on the PT01 programmer (please refer to
the Programming chapter).
7. Start the motor-pump group (V0+VS).
8. Read the pressure on the programmer PT01.
9. If the read value is different then the calibration one:
-Press the manual lowering button (ML) in order to
decrease the pressure on the valve block.
-Screw the adjustment screw (1) for increase the
pressure on the MPS; unscrew the adjustment screw
(1) for reduce the pressure.
-Start the motor-pump group (V0+VS)
-Start the Overpressure Value control procedure on
the PT01 programmer
-Read the pressure on the programmer
-Repeat this procedure until the pressure value on the
programmer is the same than the calibration one
10. Tighten the locknut (1).
11. Put back and tighten the protection cap of the
adjusting screw (1).
12. Re-open the ball valve (R/S).
13. Close the manometer shut-off valve (6).
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