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10 Maintenance instructions
10.1 What this chapter contains
This chapter contains the maintenance instructions for the active filter. Although your
PQF has been designed for minimum maintenance, the following procedure should be
carefully followed to ensure the longest possible lifetime of your investment.
WARNING: All maintenance work described in this chapter should only be
undertaken by a qualified electrician. The safety instructions presented in
2
of this manual must be strictly adhered to.
WARNING: High AC and DC voltages may be present in the filter panel. Do not
touch any filter parts unless you have ascertained that they do not carry dangerous
voltage levels.
WARNING: Under no circumstances close the main contactor manually. Failure to
adhere to this guideline may result in physical injury and/or in filter damage.
10.2 Maintenance intervals
Table 52
operating and ambient conditions, the intervals of
Announced intervals assume that the equipment is operating under ABB approved
operating conditions (Cf.
Maintenance
Standard maintenance
procedure
Cooling fan change
DC capacitor change
For convenience
maintenance engineer.
10.3 Standard maintenance procedure
10.3.1
Step 1: Check the ambient temperature conditions
With the filter running, check the ambient temperature conditions and make sure that they
are similar to the conditions at the commissioning stage. If higher temperatures are
present, this may indicate a problem with the switch room cooling/ventilation system.
Ensure that the filter derating factor ([/Welcome/Settings/Installation set./Rating])
lists the routine maintenance intervals recommended by ABB. Depending on the
Chapter
Table 52: Filter maintenance intervals recommended by ABB
Intervals
Depending on the dustiness/dirtiness of the
environment, every 12 to 24 months.
Every 4 years (35000 hours)
Every 8 years when not using line to neutral
balancing option.
Every 5.5 years when using full capacity for
line to neutral balancing.
Every 5.5 years for PQFS 100A in case of
compensation of 3
phase applications.
Section 10.7
presents a maintenance template that can be used by the
Table 52
12)
rd
harmonic in single-
Manual Power Quality Filter PQFS ç Maintenance instructions 141
Chapter
may have to be reduced.
Instructions
Section 10.3
Section 10.4
Section 10.5
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