What are the effects of the Owner making a temporary or trial usage of equipment or work supplied by the Contractor before final completion and written acceptance by the Owner?

Temporary or trial usage shall not be construed as evidence that the Owner has accepted it.

The test run shall be made by the Owner for such reasonable length of time, as the Owner shall deem necessary. The Owner shall not be liable for injury to or breaking of any part of such work which may be caused by weakness or inaccuracy of structural parts or by defective material or workmanship.