Specifications

PREVENTIVE MAINTENANCE Document No. DER05022
Effective Date 25 May 07 Page 3 of 10
MAINTENANCE PROCEDURES
The following paragraphs describe maintenance procedures for centrifuge components and
assemblies. Obvious procedures are omitted.
WARNING! HIGH VOLTAGE MAY BE PRESENT. ALWAYS OPEN FUSED
DISCONNECT SUPPLYING ELECTRIC POWER TO THE EQUIPMENT, AND
LOCK OUT AND TAG OUT POWER SUPPLY BEFORE PERFORMING ANY
MAINTENANCE PROCEDURES.
WARNING! FAILURE TO WEAR SAFETY GLASSES MAY RESULT IN SERIOUS
EYE INJURY OR PERMANENT LOSS OF VISION. SAFETY GLASSES MUST BE
WORN AT ALL TIMES WHILE PERFORMING ANY MAINTENANCE
PROCEDURE.
Drive Belt
The drive belt should be replaced if inspection reveals damage or deterioration. To replace the
belt, proceed as follows:
1. Loosen screws securing feed tube clamp, and slide out feed tube.
2. Release latches, and remove belt guard covering sheaves and fluid coupling.
3. Loosen locking nuts securing drive motor feet to base (Figure 5022-2), turn adjustment bolts
counterclockwise to loosen belt, and slip belt off sheaves.
4. Check sheave parallel alignment using a straight edge. Adjust position(s) of sheave(s) to
achieve parallel alignment within 0.0156 inch.
5. Install new belt on drive motor and bowl assembly sheaves.
Figure 5022-2 Drive Belt Tensioning Adjustment