SystemAir EX 140A, Operation And Maintenance Instructions

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10 | Maintenance, service and repair
8 Maintenance, service and repair
Caution
Always read the safety information before maintenance or service.
Repair or replacement of components is not permitted on EX 140A/180A. For other questions about the fan, contact
technical support. Cleaning interval should be in proportion to how fast the impeller and cooling fan becomes dirty. Dis-
assembly of the impeller is not allowed.
Check that:
• The installation is accessible for cleaning and inspection work.
• No Ex atmosphere is present before switching of the fan.
• That the fan is not energized and the current circuit is interrupted and secured against restart.
• The impeller has stopped before any maintenance/cleaning begins.
• Applicable health and safety regulations are followed (EN50 110, IEC 364).
Danger
Cleaning with fluids when the fan is connected to voltage can cause an electric shock – danger to life!
• Under no circumstances may a high pressure cleaner or water jet be used.
• No aggressive solvents may be used as cleaning agents
• The cleaning should be carried out on the flow area and cooling air in/outlet area.
• Loose screws must be attached
• If the motor protection has tripped, check that the fan is not blocked. Contact the manufacturer if the fan does not
start after you have checked and reset motor protection.
• Cable glands on the motor must have at least the same Ex class as the fan, see figure 4.
After maintenance or servicing, check that:
• There is no abnormal noise and that the operation is without vibrations.
• The impeller balance weights have not been moved and that the impeller blades have not been bent.
135371 | A007