Magnum-venus-plastech Megaject MKIV Revision 1_6 User Manual download pdf (Page 17)

Megaject MK V Issue 1_6 Page 17 of 41

Recirculating & Repriming

Recirculating

Recirculation of the machine should be carried out on a regular basis to ensure resin and

catalyst flows are even, free of air bubbles (observed through recirculation returns) and to

prevent sedimentation of any fillers/additives in the resin system.

Recirculation should be carried out at the start of each shift or if new material has been

added to either the resin or catalyst containers.

Procedure

1. Ensure both recirculation valves are in the recirculate position.

2. Adjust pump pressure regulator until the pump pressure gauge reads approx. 2 bar.

If MPG is fitted, adjust MPG preset level to approx. 1 bar.

3. Turn the recirculation switch to the ‘on’ position.

4. Allow machine to recirculate for required period. Ensure recirculating materials are

free of air bubbles and even on both pump strokes.

5. Turn recirculation switch to ‘off’ position.

Repriming

To be carried out when the operator wishes to change the resin/catalyst in a machine which

has already been commissioned.

Procedure

1. Remove pick up filter from fluid. Recirculate machine to empty fluid lines

2. To clean the lines and pump, place pick pipe in solvent container and recirculate

until clean solvent is observed at the recirculation pipe.

3. Place the recirculation pipe in a waste container. Place pick up pipe in new fluid.

Recirculate machine until all solvent is discharged and new fluid is observed at the

recirculation pipe.

4. Place recirculation pipe in fluid container with pick up pipe.

5. Continue recirculating until material is free of all air bubbles.

Note: If the new material is of a similar chemical type to the existing material, then it may

not be necessary to clean the system with solvent before loading the new material.

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Magnum-venus-plastech Megaject MKIV Revision 1_6 User Manual Page 17