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TS_619_00 PW9000DPA S2 User Manual 13/3/17
5
Maintenance
5.1
Introduction
The UPS does not contain any user-serviceable parts, so the maintenance requirements are minimal other than to ensure
the environment in which the UPS is installed is kept cool and dust free. A clean operating environment will help maximise
the useful working life and reliability of both the UPS and its batteries.
5.2
Scheduled maintenance
It is essential that the UPS system and batteries receive regular preventative maintenance to maximise both the useful
working life and system reliability. When the UPS is commissioned, the commissioning engineer will attach a service
record book inside the front of the UPS which will be used to log its full service history.
We recommend that the UPS system is maintained every six months by an Uninterruptible Power Supplies Ltd. trained
engineer or approved service agent, who will complete the following.
5.2.1 Preventative maintenance inspection
Preventative maintenance inspections form an integral part of all Extended Warranty Agreements (maintenance contracts)
offered by Uninterruptible Power Supplies Ltd.
During a preventative maintenance inspection a trained Uninterruptible Power Supplies engineer will check and validate:
• Site environmental conditions
• Integrity of electrical installation
• Cooling airflow
• Load characteristics
• Integrity of alarm and monitoring systems
• Operation of all installed options
• All stored event logs
5.2.2 System calibration
To ensure optimum UPS operation and efficient load protection we recommended that the system’s operating parameters
are checked and recalibrated where necessary.
During a system calibration a trained Uninterruptible Power Supplies engineer will check:
• Rectifier operation and calibration
• Inverter operation and calibration
• Bypass operation
• Battery status and battery test
WARNING:
All the operations described in this chapter must be performed by trained personnel.
WARNING:
Preventative maintenance inspections involve working inside the UPS which contains
hazardous AC and DC voltages, and should be performed only by an authorised engineer who has been
trained by Uninterruptible Power Supplies Ltd.
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