Specifications

Document No. DER05037 GEARBOX REMOVAL & INSTALLATION
Page 8 of 8 Effective Date 28 Mar 08
INSTALLATION (CONT’D)
18. Re-install rotating assembly into centrifuge as follows:
a. Apply rust preventive compound to mating surfaces of pillow blocks and centrifuge base.
b. Using hoist, lift rotating assembly from cradle and slowly lower onto centrifuge until pillow
blocks contact base.
c. Insert alignment pins into pillow blocks, and use a brass hammer to fully seat pins into
base; do not tighten nuts on alignment pins.
d. Apply anti-seize compound to pillow block bolts, and insert bolts with washers through
pillow blocks and into base. Tighten bolts in stages to torque specified in
DER05029,
19. Install drive belts on motor and bowl sheaves, and tension belts in accordance with
DER05023.
20. 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.
21. Uncoil and re-connect sensor leads to terminal block in junction box, and then re-install
junction box cover.
22. 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.
23. Run the conveyor for 10 to 15 minutes to allow warming of gearbox oil, and then check oil
level. Fill with recommended oil if needed (refer to
DER05023).
Note! To avoid leaks, replace brass gasket on gearbox fill plugs each time
plugs are removed.
24. Close case cover, and secure with screws, tightening from center of cover outward in both
directions.
25. Install and secure belt guard over motor and bowl assembly sheaves.
26. Connect feed piping to feed component flange.
27. 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.
Copyright© 2008 by DERRICK CORPORATION