Limited Life Components - Emerson Liebert NXL series Operation And Maintenance Manual

Liebert NXL UPS
3.3.3

Limited Life Components

The Liebert NXL UPS has a design life well in excess of 10 years. Well-maintained units
can continue to provide economic benefits for 20 years or more. Long-life components are
used in the UPS wherever practical and cost-effective. However, due to the currently
available component material, manufacturing technology limitations and the general
function and use of the component, a few components in your Liebert UPS will have a
shorter life cycle and require replacement in less than 10 years.
The following components utilized in your UPS system have a limited life cycle and are
specifically exempt from warranty. To prevent a wear-out failure of one of these
components affecting your critical load operations, Liebert recommends these components
be periodically inspected and replaced before the expected expiration of their life cycle. The
expected life of each component listed below is simply an estimate and is not a guarantee.
Individual users may have site-specific requirements, maintenance and other
environmental conditions that affect the length of the component's useful life cycle.
Component
Power AC filter capacitors
Power DC filter capacitors
Low-profile fans
Air filters
Battery, lithium logic memory
backup
Battery, storage
Lead-acid wet-cell (user
selection)
Valve-regulated, lead-acid
(VRLA)
In most cases, replacement components must exactly match the original component
specifications.
These replacement components are not readily available from third-party component
distributors.
For assistance with your specific component specifications, replacement component
selection and sourcing, call Global Service Support. For customers using Liebert Services'
preventive maintenance services, periodic inspection of these components is part of this
service, as well as recommending component replacement intervals to customers to avoid
unanticipated interruptions in critical load operations.
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Operation and Maintenance Manual
Expected Life
> 7 years (~62,000 hours)
> 7 years (~62,000 hours)
> 7 years (~62,000 hours)
1 to 3 years
10 years (~87,600 hours)
10 to 20 years
5 years
10 years
Table 1: UPS component service life
250-300-400-800kVA
Replace in:
5 to 6 years
5 to 6 years
5 to 6 years
Check four times per year
8 to 9 years
1 to 2 years before end-of-life
3 to 4 years
6 to 8 years