Specifications

MAIN BEARING REPLACEMENT Document No. DER05024

Effective Date 28 Mar 08 Page 5 of 5

8. Install drive belts on motor and bowl assembly sheaves, and tension belts in accordance with

DER05023.

9. Install flexible coupling half onto gearbox shaft at location noted in Removal.

10. Insert spider into flexible coupling half on motor shaft, and slide coupling half back into

engagement with coupling half on conveyor drive gearbox shaft. Set gap between coupling

halves at about 0.125” (3mm). Install and tighten screws to secure coupling to shafts in

accordance with Rotex manual, KTR-N 40226 E, in Section 12.

11. Grease main bearings in accordance with lubrication chart in

DER05023 and the following

steps:

a. Apply electric power, start up centrifuge, and adjust bowl speed to 500 rpm.

b. While watching bearing temperature, inject new grease into pillow block until grease flows

from the outlet port on the bottom half of the pillow block at the belt side.

12. Close case cover, and secure with screws, tightening from center of cover outward in both

directions.

13. Install belt guard over motor and bowl assembly sheaves, and secure to base with screws.

14. Connect feed pipe to feed component flange.

15. Apply electric power, and start up centrifuge (refer to

DER04098). Carefully monitor

performance, and check for any unusual noise.

The content of this document is subject to change at any time. Information provided does not cover all details or variations possible

with DERRICK equipment, nor does it cover every contingency that may be met in conjunction with installation, operation,

maintenance, or troubleshooting of the equipment. Should additional information be required, or should situations arise that are not

covered by this manual, bring the matter to the attention of your local DERRICK representative or the Service Department at

DERRICK Corporation in Buffalo, New York.