Description; Regular Maintenance; Tools Required; Service And Repair - ABB PSTX370 Service Manual

2.1

Description

This chapter outlines general information and procedures
necessary for performing maintenance on Softstarters
PSTX210...370 and PSTX470...570.
CAUTION
Do not open the Softstarter or touch any live parts
when the main and supply voltage is connected.
WARNING
If using the Rated Operational Voltage U
2
/N) as source for Control Supply Voltage U
sure to not exceed U
2.1.1

Regular maintenance

Check screws
• Check that all mounting screws are fastened.
Tighten if necessary.
• Check that all connections of main-, control- and
supply circuits are fastened.
• Tighten the terminal screws and screws on the
connection bars, if necessary.
• Check that the cooling airways are free from dirt and
dust.
• Check that all the LED lamps are working.
• Check that the text in the HMI display is working.
Keep Softstarter clean from dirt
• Clean all dust and dirt from the products exterior
using a vacuum cleaner. Any buildup of dirt or other
contaminates that will not come off with vacuuming
should be cleaned with lint free rags.
• All vents are to be cleaned of all dust and/or dirt.
Ensure that ventilation openings are not obstructed.
Dust and/or dirt in the Softstarter could lead to a short
circuit.
• In environments where there is an extreme exposure to
adverse conditions, the frequency of regular
maintenance for Softstarters should be increased.
If the Softstarter is installed in an electrical equipment
room, the area should be kept cleaned of dirt and/or
dust on a regular basis.
• The top of the Softstarter should be examined for
evidence of water seepage. The source of the water
should be immediately identified and corrective
measures taken to permanently correct the condition.
Check the By-pass Contactor
• Inspect for loose, broken, or worn parts. Examine for
excessive wear of moving parts. Observe that
operating mechanisms function properly without
binding, hanging, or without delayed action. Ensure
mechanisms are clean, and all screws and screws are
properly secured. Repair or replace if necessary.
• Check contacts on Softstarters for signs of wear and
replace as required.
Service for By-pass Contactors
See the following operating instructions:
For PSTX470...570 1SFC 380023-en.
Description | Service Manual |
10
(Phase
e
make
s,
250V AC,50/60Hz.
s
1SFC13105M0201
2.1.2

Tools required

• Slotted screwdriver
• Slotted screwdriver M3
• Long-nose plier
• Torx 15
• Torx 20
• Torx 25
• Torx 30
• Hexagon no. 4 Screwdriver
• Hexagon no. 8 Screwdriver
• Hexagon M10 socket wrench
• Abrasive cloth P600
• Ethanol
• Silicone oil
• Megger to set on 500V
2.1.3

Service and repair

In case the Softstarter has to be repaired, a spare parts
list and necessary instructions are available at:
www.abb.com/lowvoltage.
• Spare part list 1SFC001013C0201
Service and repair shall be performed by
authorized personnel only. Note that unauthorized
service and/or repair affects the safety and the
warranty.
2.1.4

Weights

CAUTION
Pay attention to the weight when handling the
Softstarter. Heavy lifting could result in personal
injury.
Table 4
Type
PSTX 30...105
PSTX 142...170
PSTX 210...370
PSTX 470
PSTX 570
Weight in kg Weight in lbs
6,1 13,5
9,6 21,2
12,7 27,9
25,5 56,2
27,5 60,6