Ensure that the gland seal water shut-off valves are open, and that gland seal water is flowing to the appropriate cyclone feed pump.Also ensure that the shut-off valves in the barren solution lines to the ball mill feed chute and the cyclone feed pump-box are open. Check that the barren solution tank is at least half full and that the barren solution pump is running. Check that the cyclone feed pump-box and pump suctions are not sanded.Check that the plant air shut-off valves are open to the cyclone apex valves and to the distribution box plug valves.Check the plug valves in the mill discharge distribution box for correct open or closed position depending on which pump-box compartment is to be used.Check the ball mill discharge chute and cyclone overflow and underflow launders for obstructions and debris.This reading should be no lower than 90 psi (620 kPa). Also check the air pressure on the mill clutch air receiver tanks. Ensure that the plant air shut-off valves are open to the mill clutch and ring gear lube system.Also, check grease level in the mill ring gear spray lube drum. Check oil level in ball mill lube oil tanks.Check the ball mill belt feeder for undue buildup of material.Check the ore slot feeder for obstruction or hang-ups.The following items must be checked before the equipment in the Grinding Circuit is started. Ball Mill and Grinding Circuit Preparation for Start-UP
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