4
INTRODUCTION
SET-UP:
Select the appropriate set of centring legs; mount them to the collars and roller bars as shown in.
Nuts and bolts are provided with the Rotoblast set.
• Mount the centring legs on the roller bar according drawing.
• With the centring legs in place at the right angles to the collars, the wheels should be
perpendicular the centre line of the tool.
•
Insert the tool in the collar and fix it with the locking screws.
OPERATION:
Before operation, check the rotating head on drag.
There should be some drag, caused by the leather dust seal, to protect the ball bearings.
If the head rotates without drag caused by the tightening of the leather dust seal, tighten the rubber
lined nipple (pos.13) at the rear of the unit and lock it with the locking nut (pos.14) for the rear end
plate (pos.11)
Couple the blast hose to one end of the pipe lance and the Rotoblast to the other end with CFT
couplings (pos.22-23) (or leave the lance out). Pipes to be cleaned can be kept in stacks.
Insert the Rotoblast just inside the pipe with the blast hose running through the pipe.
Now apply air only to the tool and check that no air or dust is escaping from the four pressure
relief holes in the rear end plate (pos.3 & pos.11) If so, the pressure on the leather dust seal is
insufficient or it’s worn. A worn-out dust seal causes severe damage to the tool within several
minutes.
Having checked the Rotoblast nozzle’s add abrasive to the air.
The air/abrasive mixture to the tool should be rich. A mixture too lean causes premature wear on
the rotating head. Pull the Rotoblast towards you very steadily. The cleaning result is determined by
the speed of movement. Before cleaning a pipe, always check for drag.
