Sterling 1200, 2000 Problem, Possible Cause, Possible Remedy, consulting the service, department

	Problem	Possible Cause	Possible Remedy
		Cutter mounting screws not	Re-tighten using torque
			wrench following the
		tight.
			instructions in this manual.
		Screw fatigue.	Fit new screws.
	Cutting gap alters during	Washers deformed.	Insert new washers.
	operation.	Cutter holder surface	Insert new cutter holders.
		deformed.
		Supporting surfaces not	Clean and re-dust supporting
		clean.	surfaces.
		Threads in housing worn.	Fit new bushinges in
			housing.
		Screen wrongly inserted.	Fit screen correctly.
	Screen damage.
		Screen support buckled.	Replace screen support.
		Wrong screen radius.	Correct it.
		Limit switches not activated.	Check position of limit switch
			and correct.
		Main and control fuses.	Replace fuse.
		Feed device not connected.	Switch on in sequence.
	Shredder does not start.	Material jam.	Empty shredder before
			switching ON.
		Star delta connection.	Correct wiring on motor.
		Motor protection switches	Check motor relay for correct
			setting and increase if
		off.
			necessary.
		Star delta time relay.	Correct time.
		Feed starts too early.	Start feed only after switch
			over from star to delta.
		Limit switch loose or wrongly	Re-position and tighten limit
		set.	switch.
			•	Replace fuse.
	Shredder blocks when under	Fuse defective.	• Fit larger fuse only after
	load.			consulting the service
				department.
			• Reduce feed quantity of
		Motor fuse switches off – red		the grinding material.
		indicator.	•	Correct setting.
			•	Replace fuse.
	Frequent switching off of	Current relay switches off	Correct setting.
	material in-feed device.
BJ5-615	Chapter 6: Troubleshooting			56 of 85