Troubleshooting - Hardi COMMANDER Plus Series Operator's Manual

Operational problems
In cases where breakdowns have occurred, the same factors always seem to be in question:
1. Minor leaks on the suction side of the pump will reduce the pump capacity or stop the suction completely.
2. A clogged suction filter will hinder or prevent suction so that the pump does not operate satisfactorily.
3. Clogged up pressure filters will result in increasing pressure at the pressure gauge but lower pressure at the
nozzles.
4. Foreign bodies stuck in the pump valves with the result that these cannot close tightly against the valve seat.
This reduces pump efficiency.
5. Poorly reassembled pumps, especially diaphragm covers, will allow the pump to suck air resulting in reduced or
no capacity.
6. Hydraulic components that are contaminated with dirt result in rapid wear to the hydraulic system.
Therefore ALWAYS check:
1. Suction, pressure and nozzle filters are clean.
2. Hoses for leaks and cracks, paying particular attention to suction hoses.
3. Gaskets and O-rings are present - and in good condition.
4. Pressure gauge is in good working order. Correct dosage depends on it.
5. Operating unit works properly. Use clean water to check.
6. Hydraulic components are maintained clean.
Steering drawbar system
FAULT
Sprayer trails unstable

Troubleshooting

PROBABLE CAUSE
Air pockets in the hydraulic
circuit
Hydraulic circuit leaking
®
HARDI COMMANDER
CONTROL/REMEDY
Prime hydraulic circuit
Repair leak, prime
OPERATOR'S MANUAL 55