Specifications

Document No. DER05023
Effective Date 24 Apr 08
Supersedes
28 Mar 08
Page No. 1 of 5
PREVENTIVE MAINTENANCE
DE-7200 CENTRIFUGE
GENERAL
Preventive maintenance consists of overall inspection, cleaning, and lubrication. Routine
maintenance will ensure maximum life and trouble-free operation. While the maintenance
schedule presented in this section is not rigid, modifications should be based on experience with
operating the equipment at your facilities. A maintenance log using document
DER13000 should
be kept to help establish a routine maintenance schedule, as well as to monitor and adjust the
schedule as necessary throughout the equipment’s life.
Consider the following factors when establishing a maintenance schedule:
• Duty cycle
• Ambient temperature
• Operating environment
RECOMMENDED ROUTINE MAINTENANCE
Following is Derrick’s recommended routine maintenance schedule for the centrifuge. This
schedule may be altered, if warranted by local conditions and operational requirements.
PREVENTIVE MAINTENANCE SCHEDULE
Action Frequency
Inspect feed connection for leaks, and tighten connection flange hardware
as required.
Every shift
Inspect liquid discharge connection for leaks. Tighten connection to prevent
leakage.
Every shift
Grease main bearings (Figure 5023-1). Every 40 Hrs
Grease conveyor bearing (Figure 5023-1). Every 500 Hrs
Change conveyor drive gearbox oil (Figure 5023-1). Every 2500 Hrs
Remove feed component assembly, clean interior of pipe, and reinstall. Every 40 hrs
Check for and remove accumulated solids from interior and exterior of case.
Every 40 hrs or
as needed
Remove belt cover, inspect belt for damage, and check/adjust tension. Every 160 hrs
Inspect flexible coupling between conveyor drive motor and gearbox shaft. Per mfctr*
*Inspect per manufacturer recommendations (Refer to Rotex manual in Section 12).