Sterling 1500, 1200, 2000, SMS 850 manual Material Unsuitable screen Perforation

	Problem		Possible Cause	Possible Remedy
			View first 5 possible causes	View first 5 possible
			for “Machine blocks or	remedies of “Machine blocks
			switches itself off”	or switches itself off”
			Screen perforation too small.	Insert a screen with larger
				perforation.
	Overheating of the shredded
				Modify cutter finish only
	material.		Cutters wrongly sharpened.
				after consulting the
				service department.
			Material rubs against the	Fit anti-winding device.
			housing wall.
			Insufficient cooling.	Fit rotor cooling.
			Rotor out of balance.	Weight cutters, balance
				rotor.
	Unusual vibrations.		Bearing damage.	Check bearings and replace
				if necessary.
			Anti-vibration pads defective.	Check mounting pads and
				replace if necessary.
			Bearing damage.	Check bearings and replace
				if necessary.
			Cutter finish.	Check cutter and sharpen or
				replace if necessary.
	Extreme cutter wear.
			Wrong cutting gap.	Check cutting gap and set
				following the instructions in
				this manual.
			Foreign matter.	Fit feed device with metal
				detector.
			Too much grease in bearing.	Reduce amount of grease.
			V-belts too tight.	Reduce tension.
	Bearings too hot.		Rubbing on housing sealing	Check sealing ring and oil or
			ring.	replace.
			Bearing damage.	Check bearings and replace
				if necessary.
			No grease in bearing.	Lubricate bearing.
			Screen worn.	Renew screen (possibly
				using manganese steel).
				Replace screen after
	Too many fines in shredded			consulting the service
				department.
	material.		Unsuitable screen
			perforation.
BJ5-615		Chapter 6: Troubleshooting		55 of 85