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R&D – PROCEDURA START-UP DT 0419 – E02
7
SCHEDULED MAINTENANCE
The UPS while its lifetime requires
scheduled maintenance cycles
to maintain operating reliability and
efficiency.
Scheduled maintenance must be performed by the company which provided the machine or company
specialized and trained on the system by the seller.
7.1
ANNUAL MAINTENANCE
(OR performed EVERY SIX MONTHS IN THE CASE OF UNITS IN CRITICAL APPLICATIONS)
The following actions and tests are performed while the scheduled maintenance:
• cleaning the machine
• cleaning the control logic and interface boards
• checking the tightening of all nuts and bolts and electrical connections (UPS and battery)
• testing the ventilation efficiency
• testing the inverter output wave form
• testing output voltage / frequency
• testing synchronization
• testing signals, alarms and EPO tripping
• display calibration with calibrated instrument
• operating test of manual switches and automatic devices
• operating test of switching circuits
• power failure test of UPS line, battery efficiency test and test of correct battery charger operation.
7.1
SCHEDULED COMPONENTS REPLACEMENT
•
Every three years the axial 120x120 mm fans with continual service and centrifugal fans need to be
replaced
•
All the power electrolyte capacitors need to be replaced every four years
•
The AC power capacitors need to be replaced every 6 years