1511 Series - Maintenance Manual

XX. Service Parts Inventory PhilosophyThe basic objectives in formulating a replacement parts plan are:• PROMPT AVAILABILITY• MINIMUM DOWNTIME• SENSIBLE COST• SOURCE CONTROLGuidelines for establishing meaningful inventory levels:Parts ClassificationPART CLASSIFICATION REPLACEMENT FREQUENCY PREDICTED AVAILABILITYCLASS I MOST FREQUENT 70%CLASS II LESS FREQUENT BUT CRITICAL 85%CLASS III SELDOM REPLACED 95%CLASS IV HARDWARE 99%CLASS V PRACTICALLY NEVER REPLACED 100%Consult the Recommended Spare Parts list (see Section XXI) to define the parts to be included in the inventory plan.Select parts and specify quantities.26 | Dresser Consolidated ®