Magnum Venus Plastech Megaject RTM Pro Revison 7_0 - Manual (Page 51)

Megaject RTM Pro Manual – Revision 7.00 – 13
th
APRIL 2006
Before reassembling the piston and in order to replace piston shaft seal (0535) remove
Piston assembly by unscrewing seal body (0529) from shaft (0539). To prevent Shaft
turning lock and hold lock nut (1698).
Slide Piston shaft out of top block (0528). Unscrew top seal block (0536) from top
block. Remove shaft seals (0535) from top seal block (0536) and replace.
Remove felt washers (0538) and replace.
Re assemble entire pump in the reverse order
6.7. Catalyst Over-pressure Valve Service
See catalyst Pump assembly drawing 22412-1.
Under normal operational circumstances the catalyst overpressure valve is
maintenance free.
If catalyst leaks constantly from O/P valve body (1032), O rings (0750) must be
replaced
Important Note: It is essential that the internal spring tension is not disturbed or
readjusted in the event of servicing this unit.
To renew front O rings (0750) disconnect red signal pipe from OP valve body (fitting
0646). Unscrew whole assembly from catalyst pump using a 19 AF spanner on the
forward stainless steel body (1032) taking care of any small residual pressurised
catalyst as thread seal is broken. DO NOT turn or disturb the spring tension end cap
(0671).
Hold brass body (1035) and unscrew stainless steel body (1032). Pull shaft (1033),
and stainless steel tube (1034) from body, replace O rings (0750) and reassemble.
Ensure washer (0338) is replaced and shaft is reinserted with rounded end into body.
(1032)
Reassemble observing order illustrated. Ensure bodies (1032) and factory set brass
body (1035) are correctly screwed together using PTFE tape or similar thread sealant.
Reattach valve to catalyst pump using thread sealant.
Reattach 4mm red signal pipe into fitting (0646) and re prime catalyst system to
remove any air from the system.
6.9. Solvent Pump Service
Warning! Before commencing any work on the solvent system, ensure that the
working area is free from any sources of ignition.
To test the solvent system, place injection nozzle in a waste container. Flush machine
and check solvent output from injection nozzle.
To service solvent pump foot valve seal 0464, carry out the following procedure.