Section 2-A-515. Acceptance of Goods. (1)  Acceptance  of goods occurs after the lessee has had a reasonable  opportunity to inspect the goods and (a) the lessee signifies or acts with respect to the goods  in  a manner  that signifies to the lessor or the supplier that the goods are conforming or that the lessee will take  or  retain them in spite of their nonconformity; or (b) the  lessee fails to make an effective rejection of the goods (Section 2-A-509 (2)). (2) Acceptance of a part of any commercial unit is acceptance of  that  entire unit.