q. What sort of output does the machine have?
a. Pearson offer a range of sizes, the standard machines range in output from 20tph to 120tph.q. How long do the stars last?
a. This depends largely on throughput and the type of material. Wear on compost type materials is very slight, with greater wear on abrasive aggregates. Generally the stars only wear at the beginning of the machine as it is these shafts which do the most work, and if wear does occur, it can be compensated for by adjusting the star shafts inwards.q. What size of material can the machines handle?
a. The Pearson star screens are designed to handle material 200mm and below.q. Why choose a star screen over a Trommel?
a. The Pearson Adjustable Star Screens offer a number of benefits. The active nature of the revolving star shafts creates an aggressive screening action which breaks up damp material, clods or matted compost, thus allowing the fines to fall through. Efficient separation can be achieved by using a relatively small machine compared to what may be required with a Trommel screen.The unique (patented) Adjustment Mechanism on the Pearson also allows the operator to easily adjust the size of the fines fraction. Fixed screens cannot do this.
The screen can be used in all weathers without blocking, moisture content is no problem to the Pearson screens. River dredgings and road sweepings (75% water) have both been screened successfully with the Pearson system.
q. How much maintenance does the machine require?
a. The only maintenance needed is a daily check-over to make sure there are no obstructions present. The bearings are sealed so there is no oiling or greasing to do, and the machine can be cleaned by running it whilst empty, and adjusting the star shafts inwards for a short while.