Magnum Venus Plastech APS MGS-CMB-APS-311 - Manual (Page 13)

Problem
Fast downstroke (winking of
pattern).
Fast upstroke (winking of
pattern).
Partial dive on downstroke.
Pump stroke “chatter”.
Material leakage into
solvent cup.
Intermittent stopping of
pump stroke. (Can cause
resin to continue spraying
without catalyst.)
Decrease in volume of resin
delivery.
Possible Cause(s)
Debris on lower ball seat.
Debris on upper ball seat.
Air siphoning.
Plugged material filter
Build up of material around pump upper packings/
seals.
Loose packings.
Worn packings.
Worn shaft.
Air lock in surge chamber. This can be caused by
the pump running when the drum is empty, or when
moving a siphon hose assembly from one drum to
another. Both of these occurences can allow air
into the system.
Clogged material filter.
Worn cylinder. Fluid is bypassing the packings
through the worn areas.
Recommended Solution
Disassemble and clean.
Disassemble and clean.
Check for loose fittings from bottom of pump to
the end of the siphon assembly. Inspect for
kinks, cuts, loose fittings, etc. and correct as
necessary.
Disassemble and clean filter.
Disassemble and replace packings/seals.
Clean solvent cup and tighten as applicable 1/2
turn at a time. NOTE: Pressure must be off of
pump before adjusting.
Disassemble and replace upper packings.
Disassemble and replace shaft.
1) Reduce pump pressure to zero, disconnect
slave, slowly open vall valve on filter assembly,
allow resing and air to escape. 2) Slowly
increase pump pressure until pump begins
stroking, after smooth flow of resin is achieved,
close valve and reconnect slave.
Periodically check drums to be sure of adequate
supply of material. Use above measures after
transfering siphon assembly from one drum to
another.
Disassemble and clean.
Disassemble and inspect cylinder for wearing
when doing repairs.
Fluid Sections