ABB HXR Series - Thermal Performance, Air-To-Air Cooling System

Manual for Induction Motors and Generators
96 - Trouble Shooting
3BFP 000 050 R0101 REV E
***Following chapter for cooling type: Air-to-air
8.1.3.2 Thermal performance, air-to-air cooling system
NOTE: For high bearing temperatures, see Table 8.1.2 Lubrication system and bearings.
Trouble shooting
Thermal performance
air-to-air cooling system
High winding temperature
High cooling air temperature
z
z Damaged cooling fan(s) Replace fan(s)
z
z Fan rotating in wrong direction Replace fan(s)
z
z Dirty machine interior Clean machine parts and air gaps
z
z Damaged external fan Replace fan
z
z Fan rotating in wrong direction Change shaft mounted fan or correct external blower motor operation
zz Leaking cooler Repair cooler
z
z Ambient temperature too high Add ventilation to decrease ambient temperature
z
z
Exiting air is pulled back in
Ensure sufficient clear distances surrounding the cooler
zz Heat source nearby Place heat sources further away, check ventilation
z
Overload
Control system setting Check machine controls, eliminate overload
z
z
Overspeed
Check actual speed and ABB speed recommendations
z
Network unbalance Check that network balance fulfils requirements
zzFaulty instrumentation or measurement system Check measurements, sensors and wiring
z Too many starts Let the machine cool down before restarting
z Winding fault Check windings
High intake air
temperature
Low secondary cooling
circuit performance
Corrective action
Experienced
malfunction
Low primary cooling
circuit performance
Possible cause