Patent ID: 8657913

Claim:
A method of assembling a gas cleaning separator for separating a flowable mixture of substances of different densities; wherein the separator comprises: a housing comprising first and second separate parts, the first housing part having a registration surface against which a datum surface of the second housing part registers so as to define an inner space of the housing; and a rotor assembly located in said inner space and rotatable about an axis of the first housing part relative to the housing, the rotor assembly comprising a rotary shaft rotatably mounted to the first housing part by means of a bearing unit and rotatably mounted to the second housing part; and wherein the method of assembling said separator comprises the steps of: rotatably mounting the rotary shaft to the second housing part in a predetermined position relative to said datum surface wherein said predetermined position is coincident with said axis when the datum surface of the second housing part is in register with said registration surface of the first housing part; locating the bearing unit on a jig wherein the jig comprises a datum surface for registering with the registration surface of the first housing part, and means for receiving said bearing unit in a position relative to the datum surface of the jig such that the bearing unit is received by the jig in a position relative to the datum surface of the jig which is coincident with said axis when the datum surface of the jig is in register with said registration surface of the first housing part; locating the datum surface of the jig in register with said registration surface of the first housing part; and secure the bearing unit to the first housing part.