Thermal Performance; Thermal Performance, Open Air Cooling System - ABB AMA Series Manual

8.1.3 Thermal performance

***Following chapter for cooling type: Open air or ducted air

8.1.3.1 Thermal performance, open air cooling system

Experienced
malfunction
z
z
z
z
High intake air temperature
z z
z z
z z
Faulty air flow
z z
z
z
z
z
Damaged cooling fan(s)
z
z
Cooling fan rotating in the wrong direction
z
Overload
z
z
Overspeed
z
Network unbalance
z z
Faulty instrumentation or measurement system
z
Winding fault
3BFP 000 050 R0101 REV E
Trouble shooting
Thermal performance
open air cooling system
Possible cause
Ambient temperature too high
Exiting air is pulled back in
Heat source nearby
Dirty machine interior
Faulty cooling arrangement
Air intakes are blocked
Air filter is clogged
Control system setting
NOTE: For high bearing temperatures, see Table 8.1.2 Lubrication system and bearings.
Manual for Induction Motors and Generators
Corrective action
Add ventilation to decrease ambient temperature
Ensure sufficient clear distances surrounding the machine
Place heat sources further away, check ventilation
Clean machine parts and air gaps
Inspect cooling arrangement condition and correct assembly
Clear air intakes of debris
Clean or replace air filters
Replace fan(s)
Replace fan(s) or change rotating direction of external fan
Check machine controls, eliminate overload
Check actual speed and ABB speed recommendations
Check that network balance fulfils requirements
Check measurements, sensors and wiring
Check windings
Trouble Shooting - 95