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Description of Contract
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One (1) Year full coverage |
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Emergency Service 7x24, 365 |
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Including all parts, labor and expenses |
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Response time is four (4) hours or less |
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Contract includes two (2) PM Inspections
- To be performed during normal business hours
- Includes full UPS Electronics & Battery maintenance
- Battery replacement not covered under contract
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UPS Preventive Maintenance – Detailed Check List
Visual Checks
- Insulation, Overheating, Damage
Cleaning/Air Flow
- Check fans, Door/Compartment Seals
- Replace Filters (Customer Supplied)
- Clean Module
Check/Record Voltage Waveforms And Currents
- Input/Output, Rectifier, AC&DC Caps
Power Measurements (On Line)
- Output RMS Current (Phase and Neutral)
- Output Peak Current (Phase and Neutral)
Metering
- DC Volts And Current
- Input volts/Current
- Output Volts/Current
- Frequency
Fuses
- Verify Type, value, condition
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Synchronizing
- Verify Utility Sync & Transfer To Bypass
- Transfer From Bypass To UPS
- Verify Voltage And Phase Lockout
- Verify Static Bypass Operation
Control Calibrations
- Check/Adjust as necessary
Circuit Breakers/Isolators
- Verify Free Travel
- Check Mag/Thermal Settings
System/Module Safety Parameters
- Check Battery Current Limit *
- Check Input Current Limit *
- Check Overload Levels *
- Check Overtemp Circuits *
* Where possible/available
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Battery Preventive Maintenance – Detailed Check List
- Perform safety evaluation of battery, racks, protective equipment and environment. Note and record any discrepancies.
- Record the ambient temperature of the battery room.
- Clean normal cell dirt/dust accumulation. Note: Some environments may not allow for practical management of dust accumulation.
- Inspect each jar for signs of cracks, excessive bulging and leakage.
- Measure and record the full string charging voltage and current.
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- Measure and record the AC ripple voltage and current.
- Measure and record the voltage to ground for each string/cabinet.
- Measure and record the float voltage across each cell/jar.
- Measure and record the conductance of each cell/jar.
- Check for corrosion on battery terminals and connectors. Clean as necessary.
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