Maintenance - ABB PSE 18 Installation And Commissioning Manual

82 Chapter 9 Softstarters Type PSE18...PSE370 Installation and commissioning manual 1SFC132057M0201
Chapter 9 Maintenance
This chapter describes the maintenance required for the PSE Softstarter. This
product needs very little maintenance, but some components should be checked
regularly.
Caution!
Do not open the softstarter or touch any live parts when the operational
voltage and control supply voltage are connected. Due to the two phase
control, a connected motor terminal always carries live hazardous voltage.
Do not touch terminals when voltage is applied. Output terminals will have
live voltage even when the device is OFF. This can cause death or serious
injury.
9.1 Regular maintenance
• Check that all mounting bolts/screws are fastened. Tighten if necessary.
• Check that all connections of main, control- and supply circuits are fastened.
• Tighten the terminal screws and bolts on the connection bars, if necessary.
• Check that the cooling airways are free from dirt and dust. If required, use
pressurized air to clean.
• Check external filters. Clean, if necessary.
• Check that the fan is working and rotating freely The blades shall rotate with-
out any resistance. This can be checked at voltage free state.
• Check the Real Time Clock and adjust if necessary.
• In case of a fault, or if a fault can not be reset, see Chapter 10. Refer to the
timing diagram for the basic functions of the softstarter.
9.2 Service and repair
In case the PSE Softstarter has to be repaired, a spare parts list and necessary
instructions are available at: www.abb.com/lowvoltage. Select the link Control
Products and then continue to Softstarters.
• Spare part list:
• Changing of HMI-module:
• Changing of Thyristor and By-pass
relay/contactor:
• Changing of fans:
Service and repair should be performed by authorized personnel only. Note that
unauthorized repair may affect the warranty.
In the event of a short circuit on the load side of a softstarter the device
could be completely destroyed and possibly cause danger to personnel. By
using a correctly rated short circuit protection device, i.e. a fuse or a circuit
breaker, the damage will be limited to one of the following two categories,
defined IEC 60947-4-2 and EN 60947-4-2:
Type 1: The softstarter might be damaged and some or all parts might need
to be replaced. The case or enclosure must not be damaged or become live
during the short circuit.
Type 2: The device should be operable after the event of a short circuit.
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