Sterling D48160s manual Section

TROUBLESHOOTING

				SECTION 7-2
				Processing Faults
PROBLEM		PROBABLE CAUSE		REMEDY
Processing Faults
A. Material building up below	1. Pneumatic discharge blower		1.	Start the blower
screen	not running
	2.	Damper on discharge	2.	Adjust the damper (on
	blower not open enough		opposite side of machine from
			blower)
	3.	Damper line is blocked	3. Open line and remove block
B. Stalling	1. Overfeeding		1.	Reduce feed rate
	2.	Partial or complete screen	2.	Remove screen, clear and
	blockage		inspect for damage
	3.	Insufficient tension on V-	3.	Check belt tension and
	belt drive, slippage and		adjust as required
	burning
	4.	Badly blunted or damaged	4.	Install re-sharpened or new
	knives		knives as required
	5.	Knife gap setting is too	5.	Check knife gap clearances
	wide
	6.	Installation fault, motor is	6.	Check direction arrow and
	running in reverse direction		reset electrical connections to
			correct rotational direction
	7.	Safety interlock is	7.	Tighten safety interlock
	inoperative		actuator screw
C. Material overheating	1. Check items 1, 2, 4, 5 and 6		1.	Follow remedies listed for
	under “Stalling”		each item
	2.	Screen size is too small	2.	Increase the screen size
	3.	When feeding the material,	3.	Check bed knife projection
	bed knife shield on rotor down		beyond shield. Set it to 1-2”
	stroke is incorrectly set		(0.80 mm) for film and 1/16”
			(1.6 mm) or thicker materials
	4.	When granulating rubber,	4.	Increase talc percentage rate
	insufficient talc, causing		of feed
	freshly cut surfaces to re-
	adhere
	5.	Blockage in pneumatic	5.	Check direction of blower
	discharge line		rotation. Check venturi and
			line/or transition piece for
			blockage

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