Nordson_EFD_781RC_Operating_Manual.pdf - 第15页
Item Part # Description 1 7028997 Kit, 781RC system pump 2 7013912 Brushless DC motor controller, 781RC system 3 7013909 Pump motor kit, 781RC system 4 7013910 Pump fitting kit, 781RC system 5 7014307 Pump enclosure assem…
Pump Cleaning (Motor Drive Side)
If cleaning of fluid side is insufficient to prevent binding of pump, then
disassemble drive side following these steps below:
1. Remove 3 small screws from rear of pump housing.
2. Remove mounting ring and drive housing.
3. Clean all wetted surfaces and reassemble.
4. Reattach pump to motor housing.
Valve Cleaning
Refer to 781S Series spray valve maintenance and parts guide for valve
disassembly and reassembly procedures.
Part Numbers
Part # Description
7013915 781RC-SS System, 0.36 mm (0.014") diameter nozzle
7013769 781RC-SS System 0.71 mm (0.028") diameter nozzle
781RC MicroMark Recirculating Spray Marking System
14 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Item Part # Description
1 7028997 Kit, 781RC system pump
2 7013912 Brushless DC motor controller, 781RC system
3 7013909 Pump motor kit, 781RC system
4 7013910 Pump fitting kit, 781RC system
5 7014307 Pump enclosure assembly, complete
6 7028998 Kit, 781RC pump rebuild ceramic internals
7 7013911 External power supply kit, 781RC system
Not shown 7013565 1 liter tank, recirculating system
Not shown 7012744 781RC-SS spray valve, 0.014"
Not shown 7012745 781RC-SS spray valve, 0.028"
Not shown 7026680 787MS-SS-RC MicroSpray valve, recirculating
Replacement Parts
6
4
4
1
3
2
5
7
781RC MicroMark Recirculating Spray Marking System
15www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Troubleshooting Guide
Trouble Solution
Motor does not run.
Check ON/OFF and power
connections.
Pump operating but produces
no flow.
Check tank fluid level. If empty, fill.
If tank fill level okay, check for fluid
line / pump system blockages.
Fluid leaks from pump housing.
Check that pump housing screws
are tight. Inspect gasket for
damage.
Pump binding while motor is
turning.
Clean pump per pump maintenance
/ cleaning instructions.
Fluid is not spraying from valve.
Check if pump speed control is
OFF or set too low. If okay, check if
valve outlet is clogged.
781RC MicroMark Recirculating Spray Marking System
16 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.