Patent ID: 7322805

Claim:
A method for adjusting an impeller in a motor and impeller assembly of a pumping device, including a close coupled pump, comprising the steps of: tightening mounting bolts ( 4 ) so as to move the motor and impeller assembly of the pumping device forward until the impeller touches a casing; inserting a feeler gauge in at least one radial slot in a frame adapter ( 2 ) and measuring a gap between a housing ( 3 ) of the motor and the frame adapter ( 2 ); determining a required impeller adjustment distance by adding a desired impeller running clearance to a feeler gauge thickness determined by measuring the gap at the radial slots; selecting at least one shim having a thickness that corresponds to the desired impeller adjustment distance; loosening the mounting bolts ( 4 ) and threading jacking bolts ( 1 ) arranged in the rear of the pump frame adapter ( 2 ) so that the jacking bolts ( 1 ) push against the housing ( 3 ) of the motor and the shims ( 5 ) can be inserted into the at least one radial slot; inserting the shims ( 5 ) into the at least one radial slots; backing out the jacking bolts ( 1 ); and securing the mounting bolts ( 4 ) locking the motor and impeller assembly in position so that the impeller is at the desired impeller running clearance in relation to the casing.