Magnum Venus Plastech DP-1000 (EPO3) - Manual (Page 24)

If pulsations occur, repeat entire accumulator charging procedure at ½ the previously tested charge
and then increase the charge at 100 psi increments until pulsation disappears. If adjustment of
charging pressures does not remove pulsations during the reversal of the pump, it may be necessary
to select a different accumulator size for the variable-stroke pump.
Test For Proper Mix
To test spray
–up pattern, spry strip of material on a piece of paper with steady gun movement across
the paper. Observe material (after cue has taken place) for spottiness in the cure. This will indicate if
accumulators are properly charged.
If cure is spotty and flow from gun is steady, hardener pump accumulator may require different
charging pressure. If you have not charged the fluid accumulator to a pressure 100 psi less than the
operating pressure of the hardener pump, than recharge accordingly. If these pressures match and
curing is still spotty, try re-charging at 100psi more than fluid pressure.
If adjustment of hardener pump accumulator charge does not solve the problem, then adjust charging
pressure on resin pump accumulator with same procedure.
If this process is not successful, you may have gelled material in the inlet ball or piston ball of the fluid
pumps. This condition will usually show as a pump-diving movement or as a pulsation in the spray
pattern. You may also observe fluctuation of pressure gauges in one ore both pumps.
If any of these problems occur, disassemble and clean the fluid pump section.