Standard Maintenance Procedure - ABB PQFM Instruction Manual

LV Active Filters PQF
Servicing report

10.7.2 Standard maintenance procedure

Ambient conditions and derating condition (filter running)
· Check the ambient temperature (< 40°C/104°F) (if > 40°C/104°F, derating is required)
Check the installation altitude (< 1000m/3300ft) (if > 1000m/3300ft, derating is required)
·
· Check the ventilation (room and enclosure)
· Ensure that no conductive dust is present in and around the filter panel
· Rating factor (temperature > 40°C/104°F or altitude > 1000m/3300ft)
Rating (%)
o
Filter operating status record (filter running)
· Filter load graphs
Vdc load (%)
o
Ipeak load (%)
o
Irms load (%)
o
Temp (%)
o
· Filter running in derated mode due to temperature limitation?
Temp-load around 100% and other load indicators low? (Y/N)
o
'T-Limit' indicator on digital output monitor on? (digital output 6 by default) (Y/N)
o
If answer if 'Y' to any of the two questions above, check filter cooling.
· PQF operation hours
· Fan operation hours
· If fan operation hours are multiple of 35000, exchange fan.
· Event logging window
Abnormal events present? (Y/N)
o
If 'Y', describe them in the 'comments' section of this report.
· Total number of faults recorded by the system
Describe them in the 'comments' section of this report.
Shut down the filter, remove supply to the unit and open auxiliary fuse box
· Ensure that components do not carry dangerous voltage levels anymore.
Inspect and clean the filter
· All components/cabling looks OK? (Y/N)
IF 'N', describe the problems in the 'comments' section of this report.
· Remove all dust deposits in and around the filter (fans, heatsinks, control board, ...)
· Remove fan obstructions. Fans running freely? (Y/N)
If 'N', fans may have to be replaced.
Project:
Issued by:
Date:
Manual Power Quality Filter PQFM ç Operating instructions 201
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