Preventive Maintenance using Non Destructive Testing
Infrared Thermal Imaging will identify abnormal heat conditions in real time
The basic principle of Thermal Imaging is that most items will overheat before failure
Electric Motors with temperature exceeding manufacturer specifications
1. Will have excessive electric power consumption due to heat energy dissipation
2. Will fail sooner if not operating at recommended temperature
3. May adversely affect attached or surrounding equipment
4. Failure during production will result in expensive lost production and repair cost
5. May be the result of mechanical problems of the equipment being powered
6. May be the result of an inadequate electrical source or poor connections
Bearing or Couplings heat energy will place an additional load on the power source
Pumps overheating may have defective impellers, bearing, plugged intake or discharge
Conveyors / Gear Boxes may be binding, have defective bearings or an excess load
Electrical supply is the source of many electrical problems
Faulty connection, defective switches / breakers, undersized wiring
1. All will reduce the power available to the electric motor, lights etc.
2. Will generate heat to be sensed by the Thermal Imaging instrument
Thermal Imaging will identify these issues while the equipment is under load
Maintenance staff can schedule repairs or replacement as required
Thermal Imaging works best if the equipment can be seen, generated heat can be observed when radiated from behind shielding walls etc.. Obstructed abnormalities will require removal of shielding to better identify the exact cause(s)
Equipment being examined can be at some distance from the Thermal Imaging instrument. If there are apparent anomalies from elevated equipment it may be necessary to gain a closer observation to determine the exact area of concern.
Infrared Thermal Imaging can assist the Preventive Maintenance program by identifying the components with temperatures outside the normal or manufactures recommendation range.
Note! One element in the system can adversely affect other components in the chain, such as a defective bearing can cause a good power source “motor” to overheat and fail.
Bearings / Bushings -lack of or too much lubrication, misalignment, vibration, undersized for the application
Belts / Chains -lack of lubrication, tension, heat transfer from another component
Compressors -lack of lubrication, undersized for the application, inadequate ventilation, component within the unit
Fluid Pumps -component within the unit, material being moved
Motors Electrical -undersized for the application, inadequate power source (voltage, amperage), component within the unit
Hydraulic -heat being transferred from hydraulic oil, component within the unit
Internal Combustion engines -undersized for the application, lack of lubrication, defective cooling system, fuel mixture too lean, component within the unit particularly one cylinder under performing,
Presses / shears -lack of lubrication