| Question - 1 of 10 | a | b | c | d |
| The heater coils are tripping the overload. You would ; | Turn off power to the motor and troubleshoot motor and blower | Switch operation to stand - by motor and blower and determine why the heater coils are tripping the overload | Check oil level in the blower gear case | Switch operation to stand - by motor and blower and check out the problem at some later time |
| Question - 2 of 10 | a | b | c | d |
| Your next action would be ; | Check oil level in the blower gear case | Lubricate motor bearings | Try turning the motor - blower unit pulleys by hand to determine if there is a mechanical drag causing the overload | Replace the electrical motor |
| Question - 3 of 10 | a | b | c | d |
| If it can not be turned by hand, your next action would be ; | Remove the drive belt connecting the motor and blower | Lubricate motor bearings | Check oil level in the blower gear case | Overhaul and repair blower |
| Question - 4 of 10 | a | b | c | d |
| Your next action would be ; | Pull and replace bearing on blower shaft | Pull and replace motor bearings | Check oil level in the blower gear case | Try turning blower shaft by hand |
| Question - 5 of 10 | a | b | c | d |
| The blower does not appear to be binding, your next action would be ; | Pull and replace bearing on blower shaft | Try turning motor shaft by hand | Check oil level in the blower gear case | Pull and replace motor bearings |
| Question - 6 of 10 | a | b | c | d |
| The motor is binding and you can feel the bearing grind when the shaft is turning. Your next action would be ; | Inspect motor bearing and replace if necessary | Inspect blower shaft bearing and replace if necessary | Lubricate motor bearings | No other action is required |
| Question - 7 of 10 | a | b | c | d |
| The bearing is badly worn, your next action would be ; | Replace the drive motor | Replace the worn bearing | No other action is required | By - pass the plant |
| Question - 8 of 10 | a | b | c | d |
| That will repair the motor. This type of problem could be caused by ; | Poor ventilation | Tension too great on drive belt | Excessive back pressure | Weak back pressure |
| Question - 9 of 10 | a | b | c | d |
| If you suspected that this was the problem, a good preventive measure would be ; | Lubricate motor bearings daily | Check the tension on the drive motor belts of both blowers and check for excessive wear | Frequently make a small change in the setting of variable speed drive | Lubricate motor bearings annualy |
| Question - 10 of 10 | a | b | c | d |
| In case of that the blower is mechanically failured, what sould you do ? | Bring immediately an air compressor | By - pass the plant | Shut down the plant | Call an operator from the nearest wastewater treatment plant for helping |
