Filter
Top Products
EJ5-615 Chapter 2: Functional Description 11 of 85
Chapter 2: Functional Description
2-1 Models Covered in This Manual
The models included in this manual are the Sterling SMS 850, 1200, 1500 and 2000
Medium Duty Single Shaft Shredders. The SMS Series is designed for processing scrap
from wood industries—miscellaneous trim and panel scraps, furniture, injection and
extrusion mold start-up purge, heavy wall parts, paper and cardboard, and film (baled and
loose).
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 for 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.