Connect A Pump Control Signal - Nordson ProBlue Flex Product Manual

Installation 3-25

Connect a Pump Control Signal

If your melter has a single acting pump, you must provide 24VDC power to
operate the pump.
The single acting pump is controlled by a 24VDC, 2.6 W solenoid valve.
When power is applied to the solenoid valve, the pump piston moves
downward, producing pressure and flow. Once the pump reaches the bottom
of its stroke it will remain there until power is removed. When power is
removed from the solenoid valve, the pump piston moves upward, drawing
adhesive from the tank and refilling the pump. When the pump reaches the
top of its stroke it will stop until power is again applied.
NOTE: For a comprehensive diagnostic and repair information of the double
and single acting pumps, refer to SP Pump Diagnostics and Repair
(Appendix B).
For a list of the pump service kit parts, refer to Pump Service Kits given in
Parts (Section 8).
Part 1128350_02
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