Magnum Venus Plastech Pro Series VPRO-45220 22:1 & 7:1 - Manual (Page 37)

VPRO-45220 Series Resin Pump Manual
Rev. 11/2013 Page | 37
Operator Valve:
Maintenance:
Usually, the shift block assembly on the Pro pump needs to be completely disassembled only
once per year for maintenance.
Troubleshooting:
PROBLEM CAUSE SOLUTION
If the Pro pump stalls Check for resin blockage Check and clean resin filter. Flush
resin hose, if blocked replace.
Check air supply to pump Connect air line to shift block.
Check airline for kinks or blockage.
Air motor malfunction Remove air motor cylinder head
and inspect piston and o-ring.
Shift Block Malfunction Replace valve or actuator valve as
needed on the shift block.
If the stroke “stutters” Shift Block malfunction Check and clean the actuator valve
or replace the actuator valve.
To disassemble the shift valve, please follow the procedures below. Please refer to drawing
VPRO-2000 Shift Block Assembly and Pro Pump Assembly drawing.
DANGER: Before performing service or repair on this equipment, be sure to disconnect
all air to the system.
WARNING: Be sure to wear appropriate safety equipment, including gloves and eye
protection.
Check Socket Cap Screw Position:
Before performing service and repair on the shift block, be sure the socket cap screw (00260)
and trip sleeve (85806-1) is in the center position of the pump.
NOTE: The socket cap screw and trip sleeve is shown on Pro Pump Assembly drawing.