Cone Check/Renewal For Pressure Regulation Valve; Cone Check/Renewal For Evc Distribution Valve - Hardi NK SB Series Instruction Book

6 - Maintenance

Cone Check/Renewal for Pressure Regulation Valve

If it becomes difficult to build up sufficient pressure or if pressure
fluctuations occur, it may be necessary to renew cone and cylinder.
1. Remove 4 screws (A) and remove the housing.
2. Remove 4 screws (B).
3. Replace cylinder (C) and O-ring (D).
4. Loosen the nut (E), remove and replace the cone (F).
5. Reassemble in reverse order.

Cone Check/Renewal for EVC Distribution Valve

Periodically check the distribution valves for proper sealing. Do this by
running the sprayer with clean water and open all distribution valves.
Cautiously remove the clip (A) and pull out the hose (B) for the return
line. When the housing is drained, there should be no liquid flow
through the return line.
If there is any leakage, the valve cone (E) must be changed.
1. Remove the clip (C)
2. Lift the motor housing off the valve housing.
3. Unscrew the screw (D) and replace the valve cone (E).
4. Reassemble in reverse order.
μ
ATTENTION! Follow this procedure if you are having problems
maintaining the chosen application rate.
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