Attachment C.pdf
PDF 982 KB Posted
- Attached to
- ASCO MAINTENANCE SERVICE AND PARTS
- Solicitation number
- 5400030335
- Issued by
- Richland County, South Carolina
About this file
This file is an Automatic Transfer Switch (ATS) Scheduled Maintenance Checklist provided by ASCO Power Services, Inc. for the state of South Carolina. The document outlines comprehensive maintenance procedures for ASCO 962, 434, and 7000 Series bypass model automatic transfer switches. The checklist includes 21 maintenance procedures applicable to both de-energized and energized transfer switches, covering inspection, cleaning, testing, and operational verification activities. Key procedures include de-energization and lockout of switchgear, removal of arc chutes and pole covers, verification of sensing and time delay functions, vacuum cleaning and solvent removal of accumulated dust and grime, lubrication of coils and linkage, inspection of insulating parts and contacts for damage, contact resistance testing, cable and control wire connection verification, and manual operation testing of main transfer movement. Upon completion, technicians must download event logs and system settings, then prepare and submit computer-generated inspection reports to the customer.
The checklist distinguishes between procedures required when equipment is de-energized versus when it remains energized, with specific limitations noted for certain activities when equipment is energized. Notable inspection items include contact erosion assessment, pitting and discoloration evaluation, and millivolt drop readings across normal and emergency main contacts during transfer testing. ASCO Power Services, Inc., located at 160 Park Avenue in Florham Park, New Jersey, with Tax ID 22-2243534 and DUNS number 79-016-2481, provides emergency service support through a dedicated hotline at (800) 800-ASCO (2726). Sample computer-generated reports are available upon request to demonstrate the documentation and quality assurance standards maintained for each piece of equipment serviced.
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Other files
| File | Type | Posted |
|---|---|---|
| Request For Quotes.docx | DOCX document | |
| Attachment B.pdf | ||
| Attachment A.pdf |
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Text version
ASCO AUTOMATIC TRANSFER SWITCH SCHEDULED MAINTENANCE CHECKLIST
ASCO 962, 434 AND 7000 SERIES BYPASS MODELS DO NOT NEED TO BE DE-ENERGIZED
Transfer Switch Status
Procedure De-energized Energized
1. De-energize the switchgear and engine start signals. Yes No
2. Secure and lockout normal and emergency disconnects. Yes No
3. Remove the arc chutes and pole covers. Yes No
4. Verify and record all sensing and time delay functions in the switchgear. Yes Yes
5. Vacuum clean the accumulated dust from the switchgear and accessory panels. Yes Yes
6. Inspect for moisture or signs of previous wetness or dripping. Yes Yes
7. Remove dirt and grime with an approved solvent. Yes Yes
8. Clean and lubricate TS coil and operator linkage. Yes Yes
9. Inspect all insulating parts for cracks or discoloration due to excessive heat. Yes As Allowed
10. Inspect all main arcing contacts for excessive erosion. Yes Meter
11. Inspect all main current carrying contacts for pitting and discoloration due to excessive heat. Yes No
12. Perform contact resistance test on normal and emergency main contacts. Yes Meter
13. Inspect and clean all add-on panels and accessories. Yes Yes
14. Re-install arc chutes and pole covers. Yes N/A
15. Manually operate the main transfer movement to check proper contact alignment, deflection gap and wiping action and control contact operation.
Yes No
16. Check all cable and control wire connections to the transfer switch control and sensing panel and other system components and tighten if necessary.
Yes Controls Only
17. Reconnect Engine Start. Yes N/A
18. Re-energize the switchgear and conduct a test by simulating a normal source failure. Yes As Allowed
19. Perform millivolt drop readings across normal and emergency main contacts during transfer test.
Yes Yes
20. Download event log and ATS Settings (Group 5 Controller only) Yes No
21. Prepare Computer Generated Report* of inspection for each piece of equipment and submit to customer.
Yes Yes
*A sample of this report is available upon request.
ASCO Power Services, Inc. • 160 Park Avenue, Florham Park, NJ 07932 • Tax ID 22-2243534 • Duns 79-016-2481
EMERGENCY SERVICE (800) 800-ASCO (2726)
5400029928 -Attachment C
MISSION CRITICAL CARE
sesa484621 Sticky Note QR Code
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