Tuesday, January 30, 2018

Hey Grinderguy, what are the proper Grinder Shutdown procedures?


                If you want to protect your investment, then you are asking the right questions. In the Owner’s Manual there is a lot of information including startup and shutdown procedures. You should make a checklist that operators need to complete at the end of each shift. Not only do these make sure your grinder is being taken care of, but you can also use them to figure out some of your costs and maintenance needs by including:
·         Operator Shift Hours
·         Grinder Hour Meter start and end
·         Fuel Usage
·         Engine oil Added
·         Engine Coolant Added
·         Hydraulic Oil Added
By including these items you may be able to determine:
·         What percentage of the day the grinder is actually running?
·         How much Fuel per hour the grinder is using on a particular product?
·         If fluid leaks are increasing?
As for the Grinder itself, or most any other piece of Equipment in a Grinding operation, what should be included on a Daily basis?-
1.       Hook up and pull the grinder out of the grinding area- Leaving it in place is nothing but a fire hazard that can transfer from equipment to equipment or materials
2.       Clean up and remove metal pile that was collected by the magnets on the grinder. Some of this metal may still be hot from being run through the grinder so pile in a safe, debris free area or container is best
3.       Clean Loose Debris from atop the Grinder- All this can be is a further potential fire hazard
4.       Blow off grinder and engine with an air compressor, even with leaf blower if needed. This includes the radiator, hydraulic cooler, fuel cooler, air filter, etc. Pay particular attention to the engine compartment, exhaust manifolds, turbos, etc.  This will keep fire hazards to a minimum and the engine running correctly
5.       Clean debris from rotor area and collection area under rotor and run discharge conveyors to empty the conveyor belts
6.       Fuel and grease Equipment- This allows the equipment more time to cool while you are still nearby just in case something was to catch fire.
7.       Check wear parts and change if necessary. May be too hot to do at the end of the shift but it is the best time to do it allowing more time for rotor area and engine to cool while you are still onsite
8.       If a water truck or water supply is near, hose down the rotor area and underneath the engine or bottom of engine compartment. Spraying water onto a hot engine can crack exhaust manifolds, so don’t do that, but wet down as many areas as possible. Better safe than sorry.
9.       Refer to the Owner’s Manual for Hourly Checklist per specific Manufacturers Recommendations
10.   Fire Extinguishers- How many? Are they charged? What was date of last inspection?
Most of this end of the day cleanup can be reduced by utilizing the wind on a daily basis:
·         Don’t set the grinder back up until morning when you know which direction the wind is blowing
·         Face the Radiator into the wind when you setup the grinder
·         Feed the grinder with the wind blowing dust and fines away from the engine
·         Push material to the grinder from a downwind position or from the side to help protect the support equipment also.
·         Use dust covers and dust hoods on the discharge conveyors. This will not only stop material from blowing off the conveyors but keep material from getting into the tail pulleys, belts and bearings.
·         Use a dust suppression system on the grinder if water is available.
Most all maintenance can be done after the shift so the next work day can get off to a good maintenance free start. Add the particulars of your grinder or shredder to your list and make your operators complete one daily. It not only makes sure your investment is being taken care of, but keeps you informed as to any maintenance items that may need attention and how productive your operation is during the work day.

Questions?         Dave Whitelaw                                Grinderguy@askthegrinderguy.com

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