J061--Emergency Power Equipment PM Asco Automatic Transfer Switches

A. General Information 1. Title of Project: Annual Automatic Transfer Switch maintenance 2. Scope of Work: Perform an Annual Maintenance on (28) ASCO Automatic Transfer Switches. B. Automatic Transfer Switches 1. This work must be completed by a ASCO trained and certified technician 2. De-energize the ATS. 3. Remove the arc shuts, pole covers and perform visual inspection of the main and arching contacts. 4. Test and recalibrate all trip-sensing and time-delay functions in the ATS. 5. Vacuum the accumulated dust from the ATS and accessory panels. Do not use compressed air. 6. Inspect for signs of moisture or signs of previous wetness or dripping. 7. Clean grime with an approved solvent (consult the OEM for approved solvent). 8. Inspect all insulating parts for cracks or discoloration due to excessive heat. 9. Inspect all main arcing contacts for erosion. 10. Inspect all main current-carrying contacts for pitting and discoloration due to excessive heat. 11. Inspect all control relay contacts for excessive erosion and discoloration due to excessive heat. 12. Manually operate the main transfer movement to check for proper contact alignment, deflection, gap and wiping action. 13. Check all cable and control wire connections and tighten if necessary.

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Electrical, Transfer Switches, Automatic Transfer Switches.