Occasional Maintenance; General Info; Cone Check/Replacement For Pressure Regulator; Cone Check/Replacement For Evc Distribution Valve - Hardi Ranger 550 Instruction Book

6 - Maintenance

Occasional maintenance

General info

The maintenance and replacement intervals for the following will depend very much on the conditions under which the
sprayer will be operated and are therefore impossible to specify.

Cone check/replacement for pressure regulator

If it becomes difficult to build up sufficient pressure or if pressure
fluctuations occur, it may be necessary to replace cone and cylinder. A
spare parts kit can be ordered - contact your local dealer to service the
unit.
1. Remove 4 x screws (A) and remove the housing.
2. Remove 4 x screws (B) and remove cone.
3. Loosen nut (C) in bottom of the cone.
4. Replace with parts from spare parts kit.
5. Reassemble in reverse order.

Cone check/replacement 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. Remove the clip (C) and lift the motor housing off the valve
housing. Then unscrew the screw (D) and replace the valve cone (E).
Reassemble in reverse order.

Drain valve seal replacement

If the main tank drain valve leaks, the seal and seat can be changed the
following way.
€
DANGER! Do not enter the inside of the tank - the parts can be
changed from the outside of the tank!
±
WARNING! Use eye / face protection mask when dismantling the
tank drain valve!
ATTENTION! Check function of valve with clean water before
filling chemicals into the tank.
6.6