6 - Maintenance
64
Checking/replacing the regulation valve piston
If you do not obtain sufficient pressure, or if it is not stable, replace the
piston and the ball.
1. Remove the four screws (2) and the housing.
2. Remove the four screws (B).
3. Replace ball (3) and gasket (4).
4. Loosen nut (5), remove and replace piston (6).
5. Re-assemble all the parts in reverse order.
Checking/replacing valve gaskets on EVC valves
Check the sealing on distribution valves regularly. Run the sprayer, using
clean water and open all the distribution valves. Remove pin (A) carefully
and remove return pipe (B). Once the seat is drained, there should no
longer be any return flow.
If it leaks, change gasket (E).
1. Remove pin (C).
2. Release the distribution valve from its seat.
3. Undo screw (D) and replace gasket (E).
4. Re-assemble all the parts in reverse order.
Adjusting the gauge
Check the gauge reading regularly. When the tank is empty, the float
should sit on pin (D) in the steel tube with the ring at the top on line (A).
If this is not the case, remove cap (B), loosen screw (C) and adjust the
length of the steel cable.
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