Magnum Venus Plastech Megaject MKIV Revision 1_6 - Manual (Page 21)

Megaject MK V Issue 1_6 Page 21 of 41
Shutdown Instructions
Procedure
1. At the end of the day/shift switch off the machine air and leave the resin and catalyst
recirculation valves in the recirculation position.
2. The resin pump piston shaft should be parked at the bottom of its stroke. This ensures
any smears of resin on the pump shaft do not dry out causing excess seal wear
3. For shutdown periods, if any doubts exist about the stability of the resin system, it should
be reprimed with an unfilled, unaccelerated resin system. Once the system is full of
unaccelerated resin, pump approx 300cc’s (3 counts) of resin through the injection head
then flush. Do not leave the Megaject either empty or with a cleaning solvent in the resin
system. Under normal circumstances, catalyst may be left in the system for extended
periods.
4. If filled resin systems have been used filler may sediment at the bottom of the pump and
pipework. Under these circumstances a higher pump pressure may be required to start
the pump recirculating. If filler has formed a sediment around the bottom inlet ball valve
of the pump it may momentarily stick. In such circumstances continue to pump on
recirculation for 3 minutes which should ‘unstick’ the valve. The resulting flow will quickly
wash away sediment, allowing the pump to operate correctly. Should the problem
continue, the bottom resin pump ball valve must be serviced. (refer to service
instructions).
5. After a shutdown period, it is expedient to ensure the resin and catalyst systems are fully
primed. See commissioning instructions for details.