Magnum Venus Plastech Megaject MKIV Revision 1_2 - Manual (Page 26)

Megaject MK IV Issue 1_2 25/11/2003 Page 26 of 31
Catalyst Overpressure Valve
See drawing 22021
Under normal operational circumstances the catalyst overpressure valve is
maintenance free.
If catalyst leaks constantly from fitting (4), O rings (2) must be replaced
Important Note: It is essential that the internal spring tension is not disturbed in the event
of servicing this unit.
Procedure
To renew front O rings
1. Disconnect red signal pipe and clear overflow pipe. Unscrew whole assembly
from catalyst pump using 19 AF spanner on the forward stainless steel body
taking care of any small residual pressurised catalyst as thread seal is broken. DO
NOT disturb the spring tension end cap (0671).
2. Hold brass body (1035) and unscrew stainless steel body (1032). Pull shaft
(1034), and collar (1033) from body, replace O rings (0750) and reassemble.
Ensure shaft is reinserted with rounded end into the body.
3. Reassemble observing order illustrated in dwg. 22021. Ensure bodies (1032) and
(1035) are correctly screwed together using PTFE tape or similar thread sealant.
4. Reattach valve to catalyst pump using thread sealant.
5. Reprime catalyst system to remove any air from the system.
Machine Air Circuit
In case of problems, follow enclosed schematic diagrams to check the machine air circuits.
This circuit is specific to your machine. When contacting Plastech, please quote machine
serial number. (see front cover)