Hardi New NAVIGATOR 1100, Operator'S Manual

28

HARDI

®

 New NAVIGATOR OPERATOR’S MANUAL

Cleaning the tank

1. Dilute remaining spray liquid in the tank with at least 

10 parts of water and spray the liquid out in the fi eld 
you have just sprayed - See “Use of fl ush  tank and 
rinsing nozzles” (p. 23). 

     Note:

 It is advisable to increase the forward speed 

(double if possible) and reduce the pressure to 20 
psi (1.5 bar).

2. Select and use the appropriate  protective clothing. 

Select detergent suitable for cleaning and suitable 
deactivating agents if necessary.

3. Rinse and clean sprayer and tractor externally. Use      

detergent if necessary.

4. Remove tank fi lters and suction fi lters and clean. 

Be careful not to damage the mesh. Replace 
suction fi lter top. Replace fi lters when the sprayer is 
com plete ly clean.

5. With the pump running, rinse the inside of the tank. 

Remember the tank roof. Rinse and operate all 
components and any equipment that has been in 
contact with the chemical.

    Before opening the distribution valves and spraying 

the liquid out, decide whether this should be done in 
the fi eld again or on the soakaway. 

6. After spraying the liquid out, stop the pump and fi ll 

at least 

1

/

5

 of the tank with clean water. Note that 

some chemicals require the tank to be completely 
fi lled.  Add appropriate detergent and/or deactivating 
agent, e.g. washing soda or Triple ammonia.

    Note:

 If a  cleaning procedure is given on the 

chem i cal label, follow it closely.

7. Start the pump and operate all controls enabling the 

liquid to come in contact with all the components.

 Note:

 The Safety Valve (ECP only) should be 

"purged" with clean water every time the tank is 
cleaned. This is done by turning the Select Function 
handle to the SAFETY VALVE PURGE arrow for 
several seconds while the pump is running.

  Leave the distribution valves until last. Some 

de ter gents and deactivating agents work best if left 
in the tank for a short period. Check the label. The 
Self-Cleaning Filter can be fl ushed by removing the 
by-pass hose from the bottom of the fi lter. Stop the 
pump and remove the hose. Start the pump for a 
few seconds to fl ush fi lter. Be careful not to lose the 
restrictor nozzle.

8. Drain the tank and let the pump run dry. Rinse inside 

of the tank, again letting the pump run dry.

IMPORTANT!

 If the sprayer is equipped with a 

centrifugal pump (ECPC), do not run pump dry 
for longer than 3 seconds. Otherwise severe 
damage to the pump will occur.

9.  If the pesticides used have a ten den cy to block 

nozzles and fi lters, remove and clean them now.

10. Replace all the fi lters and nozzles and store the 

sprayer. If, from previous experiences, it is noted 
that the solvents in the pesticide are particularly 
aggressive, store the sprayer with the tank lid open.

      Note:

 If the sprayer is cleaned with a high pres sure 

cleaner lubrication of the entire machine is 
rec om mend ed.

Cleaning and maintenance of fi lters

Clean fi lters ensure:

 • Sprayer components such as valves, diaphragms and 

operating unit are not hindered or damaged during 
operation.

 • Nozzle blockages do not occur while spraying.

 • Long life of the pump. A blocked suction fi lter will 

result in pump cavitation.

The main fi lter protecting sprayer component is the 
suction fi lter at the top of the tank. Check it regularly. 

Note:

 The HARDI

®

 Flush & Rinse system is available 

on the New NAVIGATOR sprayers. It offers both the 
fl ushing of in ter nal components and also a highly 
effective internal rinsing system of the sprayer tank.

Maintenance