Magnum Venus Plastech PATRIOT SSB Commissioning and instruction - Manual (Page 16)

SSB_Auto Instructions Issue 05
Page16
Notes. If the piston seal assembly is not assembled as per the instructions concerning the lost
motion tolerance the following will occur.
a)
If there is no gap then the pump will seize solid on the down stroke when filled with catalyst.
b)
If the gap is too great poor catalysation will be evident in the mix.
Important. Ensure the piston bush (4235) is screwed onto the piston the correct way up. The
four small V grooves on the bush MUST be uppermost as shown
The reassembly of the piston assembly using the piston retaining screw must only be done
when the Piston shaft is mounted through the top block.
The screw should be set at the right position to set the desired 0.5 to 1.0 mm lost motion gap
and locked in position with locking nut 6256 however we recommend medium thread locking
solution is used to secure its correct position as an additional security measure. (I.e. Loctite
®
243)
Figure 33. Catalyst piston assembly lost motion setting(assy 0100)