... aircraft hangars, paint store, contain inflammable, explosive mixed gas or steam, also applies to ship other cabin ventilation and land ... .Explosion-proof fan can be made into clockwise roation(right) or counterclockwise(left), the reversal(left)-from explosion-proof motor ... face, impeller by anti clockwise, with “L” said.Veering(right(-from explosion-proof motor end face, impeller clockwise, with “ ...