Magnum-venus-plastech Megaject MKIV Revision 1_6 User Manual download pdf (Page 13)

Megaject MK V Issue 1_6 Page 13 of 41

6. Ensure both resin recirculation valves are in the recirculation position. Turn

recirculation switch ‘on’. Recirculate until a bubble free fluid flow is observed at

the resin containers and pump output is even on both strokes.

Note: The recirculation switch should be used for recirculation only and must be turned

‘off’ when priming is complete.

7. Turn resin valves to inject position.

8. Using either the start button (Predetermined counter machines only) or the thumb

start switch, pump 300cc’s (3 counts) into a waste container.

9. Pump 200 cc’s (2 counts) into a cup. DO NOT STIR.

10. The injection head must be flushed. Return resin recirculation valves to recirculate

position. Place injection nozzle in a waste container. Operate the air purge button

to expel waste resin. Press the solvent flush button. This will reset after

approximately 30 seconds. Operate the air purge button to dry out the head and

mixer tube.

11. Check that resin in cup gels evenly and fully. If not, return to procedure 6.

Note: We strongly recommend that after injection, the recirculation valves are always

placed back into the recirculation position. This ensures that small amounts of

resin do not leak forward into the head chambers. Major movement of the pipes

and/or day and night workshop temperature variations could cause slight weeping

into the head if the machine is idle and the recirculation valves are not left in the

recirculation position.

Procedure (Polyester)

1. Connect earth lead from solvent tank to a suitable earth point. Ensure recirculation switch

is off. Connect 10mm air line (supplied) to workshop air supply. Pull the ON switch down

to the ON position. Observe incoming air pressure gauge reads a minimum 6 bar at all

times.

2. Place resin pick up pipe and resin recirculation pipe in resin container. Securely anchor

both pipes.

3. Using the funnel provided, fill catalyst container to approx 3/4 full. For polyester resin

systems we recommend Acetyl Acetone Peroxide (AAP) catalyst (e.g. Luperox 224).

Note: The use of MEKP is not recommended for RTM as product de-mould time is

significantly longer than with AAP. MEKP may also cause ‘gassing’ in the catalyst system

resulting in inaccurate catalyst flow and potential ‘wet spots’ in the moulded part.

4. Fill solvent tank following ‘Filling/Refilling Solvent Tank’ procedure.

5. Remove front guard and catalyst slave pump from the backplate. (DO NOT remove any

catalyst pump pipework.) Operate pump by hand until even resistance is felt on both

strokes and the lines are free of air. If difficulty is encountered removing all air invert

pump and continue operating by hand. Replace pump at required percentage and refit

guard.

6. Adjust pump output regulator to read 2 bar on the pump pressure gauge.

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Magnum-venus-plastech Megaject MKIV Revision 1_6 User Manual Page 13