Fault Diagnosis of Manual Sprayers and Small Motorized Sprayer
Manual sprayers and small motorized sprayers are two similar hand-held spraying systems widely used for various agricultural activities such as pest control, weed control and fertilizing. It is important to properly diagnose faults in manual sprayers and small motorized sprayers for an efficient application of agrochemicals and for protection of farmers and the environment.
The physical assessment in the fault diagnosis starts with examining the construction and the components of the manual sprayers and small motorized sprayers. In manual sprayers, the nozzles, extension tubes and pumps have to be checked thoroughly for any damages. The working parts of small motorized sprayers have to be checked too, including any switches or valves that might be installed and the fluid pressure.
The next step in the fault diagnosis is to inspect and test the electrical circuits. In manual sprayers, the operation of the high-voltage circuit is tested to check the electrical delivery system. In small motorized sprayers, the voltage, current and frequency of the circuits, as well as any related components and wires, have to be checked.
The fault diagnosis of a manual or motorized sprayer also requires checking the fluids, such as water and agrochemicals, to ensure that they are in good condition. In manual sprayers, the nozzles, valves and hose should be tested for any leakage. The same applies for small motorized sprayers, even if the leak detection systems may be more advanced.
Finally, the fault diagnosis of manual sprayers and small motorized sprayers should be finished off by connecting the machine to a suitable power source and running it at full speed for a few minutes, for testing its performance and proper operation. Any faults detected during the fault diagnosis should then be addressed to the best of the repairer’s ability.
In conclusion, proper fault diagnosis is an essential step for ensuring the efficient application of agrochemicals and the safety of farmers and farm workers. The diagnostic process consists of physical inspection and electrical testing of a manual or motorized sprayer, followed by a check of the fluids and finally, a test drive of the machine. Knowing how to properly diagnose faults in manual sprayers and small motorized sprayers is an important skill that is necessary for successful machine maintenance and repairs.
