1) Discharge the water in air filter after every day use, in case the accumulative water carried into air valve and cylinder and destroy them.

2) Clean the machin periodically, especially clean connection area of every electric device, in case strike fire phenomenon happens when dust come across moist air.

3) Check evey connection of electric appliance before reoperating the machine after a long time's close-down, and adjust generator to "hand- control". Operate machine after confirming it is in good condition.

4) Coat butter on the surface of cell guide column periodically, reducing abrasion.