Many chemicals both in the detergents and possibly in water can cause damages to the machine. There are some other problems like hosepipes or other fittings getting loosened in the course of time. Improper electrical connections can also cause damages to the machine. No one can predict the problems that may occur due to moisture, heat, chemicals and electricity. Overloading of clothes also can cause damage to the machine.
Periodically clean the interiors of the machine with water, baking soda (half cup) and white vinegar (3 cups). Run the machine without load after filling water with the above substances. All residues and deposits formed inside will be removed. If necessary consult the company representative about the preventive maintenance. In the case of new machines make use of the free maintenance service offered by the manufacturers. Remember the adage "prevention is better than cure".