World over we have many biscuit plant which have unique features and require special maintenance requirement and skills . Plant engineer has to ensure that machine utilisation is maximum and are maintain properly with spares inventory .
The following are techniques which a plant engineer adopts for maintenance .
1. Preventive maintenance
2. Predictive maintenance
3. Schedule maintenance
4. As and when maintenance
5. Annual Overhauling
Normal maintenance routine covers ''COT''
C- Cleaning. After every shift operations operators should clean all the equipments and in normal maintenance day through cleaaning should be done for pakcing machines , gauge rolls ,oven band , roller conveyors etc.small compressors should be utilised to clean syrface through compressed air .All electrical panels to be cleanded by Cleaning solvents like CRC sprays .
O- Oiling .All gear boxes , chain,sprockets and guide have to be lubricated normally for food industry we get food grade lubricant . Food grade lubricant brands are ROCOL , LPS etc. All major rollers bearing to be lubricated .
T- Tightening .All fasterners e.g Bolts , screw and pulleys and sprockets with keys , grouting bolts have to checked and tightened.
By completing above mentioned activity break down can be reduced.
BISCUIT PLANT
OVEN
check the oven band condition .
check band tracking system .
In case you find oven band to be damaged from sides cut that section andput a new section for the damaged section.
check all circulating and turbelence fan its v belt and bearings.
check band brush
check oven drive motor
check all burners
clean all nozzles for burner-change choked nozzles.
change damaged electrode of burners
PACKING MACHINES
check all heaters replace the damaged or non working heaters
check all cutter and anvil ,change the damaged one
check all photo sensors .
change damaged lugs. set stack length .
check all conveyors and change the damaged conveyor web
adjust the stack length through cross pusher.
syncronise spped of auto feeder and cross pusher .
check printer for impressions on wrapper .
CONVEYORS
check all rollers . replace the damaged and worn out rollers.
put proper lubricant to all gear boxes.
adjust roller as per web tracking
adjust tension of web by rollers adjustment .
LAMINATORS
check the pneumatic circuit and pressure
check the stroke of all trolleys in laminator .
check all webs and rollers in laminator.
GAUGE ROLLERS
check chain and sprockets
check the geared motor
check the moulder or cutter gears
UTILITIES
COMPRESSORS
GENERATORS
AIR CONDITIONING PLANTS
COLD STORAGES
