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BJ5-620 Chapter 2: Functional Description 11 of 73
Chapter 2: Functional Description
2-1 Models Covered in This Manual
The models included in this manual are the Sterling SXS 1500 and 2000 Extreme Duty
Shredders. The SXS Extreme Duty Shredders are designed for processing plastic waste
for reclamation and recycling, large extruder purgings, large reject parts, trip scraps,
baled or loose film, synthetic fiber, wood processing scrap, medical waste, cardboard,
paper, and carpet.
2-2 General Description
Mechanical Section
After the machine has been switched ON, a hydraulically controlled “swing-style” ram
pushes a quantity of material onto the slow-running profiled rotor. The in-feed is
controlled according to load.
The material can be placed (unsorted) in the hopper mounted on top of the machine. Pay
attention to this material; it cannot contain any other metal parts except staples and
nails. (The guarantee does not cover any damage to the machine as a result of metal
parts being fed into the machine.) The material in the hopper is shredded by the cutters on
the rotor. This shredding process is repeated as often as required until the whole diameter
of the screen below the rotor has been reached.
The shredder can also be switched off with material still in the hopper.
Control
The machine is fitted with an automatic shut-down; i.e. when set to automatic, the
machine switches off after a pre-set period in the time relay.
The ram feeds the shredding unit (rotor) with as much material as it is able to process.
Upon reaching 70 to 90 % of rated current, the feeding of the ram will be stopped and
automatically started again after the power consumption has fallen by 20% in comparison
with rated current. If the high current is applied longer than 0.7 - 1.5 seconds, the main
drive motor switches OFF and runs back after about 3 seconds standstill time. The ram
plate also runs back while the rotor runs back. The drive motor then stops for another 3
seconds before starting again.
Duration of pauses and return and current settings can be adjusted.
NOTE: Any alterations should only be carried out after consulting the
manufacturer.