ABB PSTX Series Installation And Commissioning Manual page 150

This chapter gives a description of basic maintenance for
the PSTX Softstarter.
WARNING
Dangerous voltage: Can cause death or serious
injury.
Make sure that the Softstarter is de-energized
before doing maintenance, service or repair.
Do not open the Softstarter or touch live parts
when the main and supply voltage is connected.
WARNING
Service and repair must be done by authorized
personnel only. Note that unauthorized repair has
an effect on safety and warranty.
INFORMATION
ABB personnel must obey the instructions in ABB
CISE 15.4.
9.1 Regular maintenance
• Make sure that all installation bolts/screws are
fastened. Tighten if necessary.
• Tighten the terminal screws and bolts on the
connection bars, if necessary.
For tightening torques, see chapter
9
5.1.1.1 Tightening torques and cable dimensions.
WARNING
• Make sure that the Softstarter is de-energized
before tightening the bolts/screws.
• Make sure that all connections of control- and supply
circuits are fastened.
For tightening torques, see chapter 5.1.1.1
Tightening torques and cable dimensions.
• If the Softstarter is installed inside a cabinet, do a
check of the external filters. Clean them, if necessary.
• Make sure that the airways are free from dirt and dust.
WARNING
Do not use pressurized air to clean the
Softstarter.
• Check that the fans are running after a ramp.
• Make sure that the fan works and rotates freely. The
blades must rotate without resistance.
• Do a check of the time of the Softstarter and adjust if
necessary.
• In case of a fault, or if a fault cannot be reset, see
chapter 10 Troubleshooting.
150 Maintenance | Installation and commissioning manual | 1SFC132081M0201