Magnum Venus Plastech DP-1000 (EPO3) - Manual (Page 13)

Disassemble Gun-Head
Remove mixing tube or spray nozzle from gun-head (see Figure 8). Remove turbulent mixer (if used) and
front resin gun plug from gun to allow proper solvent flushing (see Figure 9).
Remove check balls and valve springs and clean with solvent.
Inspect the check ball seats for hardened material. If you find any, clean the seat with solvent.
Caution: Note which side of the gun the check ball and valve spring are taken so that when you
reassemble the gun-head they are not swapped causing materials contamination.
(Figure 7. Relief Valve Locking Ring) (Figure 9. Remove Front Resin Gun Plug)
Pressurize Solvent Tank
WARNING: Do not Disable Pressure Relief Valve on Solvent Tank!
Turn FLUSH PRESSURE switch on the front panel to the “ON” position and turn FLUSH PRESSURE
regulator until gauge reads approximately 40 psi. You should hear air entering the solvent tank.
Flush Gun
Press forward on the trigger of the gun to activate the flush valve and wait for steady stream of solvent to
exit the gun. The gun-head of the EPO3 must be flushed with solvent immediately after each use. It is
extremely important to flush the gun even during short time periods between usage.
Note: The solvents selected for gun flushing should be determined by the manufacturer of the chemical
system. Many chemical systems, such as isocyanates, are extremely moisture-sensitive and require
special solvents. Consult your materials suppliers data sheets for proper solvents or consult with your
materials supplier.
Recheck Hose Fittings
Recheck hose fittings or solvent leaks and tighten if necessary.
Set Pump to Maximum Stroke Length
WARNING: If Pump Runs rapidly Shut Off Main Pressure Immediately!)
Set variable-ratio pump to maximum stroke length by loosening four bolts on slave-arm adjusting bracket
(see Figure 10) and turning large hex nut at the end of adjusting screw until pump has reached maximum
stroke length (see Figure 11)