A. check hydrosphere, gasket small or large, suggest installation standard check hydrosphere and gasket.

B. gland, loose nut, takeover, joint or sliding teeth not lock, recommends the fastening nut, joint, gland, or changing the spare parts such as sliding tooth.

C. use for a long time, the water stop aprons, gasket is wear or aging, softening, suggested to replace the same specifications of aprons, gasket.