Specifications

PREVENTIVE MAINTENANCE Document No. DER05023
Effective Date 24 Apr 08 Page 3 of 5
Gearbox Oil Change
Change gearbox oil at intervals listed in Figure 5023-1. To change oil, proceed as follows:
1. Shut down, and lockout and tag out centrifuge.
2. Remove screws securing top cover, and open cover.
3. Place a suitable container capable of retaining 5 quarts (5.5 liters) of oil beneath gearbox.
4. Rotate gearbox until one drain plug is at bottom of gearbox.
5. Remove two plugs at top of gearbox to permit air entry and thereby facilitate draining.
6. Remove plug at bottom of gearbox to drain oil.
7. After fully draining gearbox, reinstall and tighten bottom plug.
8. Re-fill gearbox with product and quantity listed.
9. Re-install top fill plugs, and tighten securely.
PARTS REPLACEMENT
Defective parts should be replaced as soon as possible to prevent further damage to equipment.
Refer to the general arrangement drawing, rotating assembly drawing, parts list, and electrical
drawings in Section 11 - Reference Drawings for Derrick component locations and part numbers.
Refer to Section 12 for supplier component information.
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.