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Nordson Corporation
OPERATOR'S CARD
P/N 229836A02
RA-20R Rotary Atomizer
Safety
WARNING: Allow only qualified personnel to
perform the following tasks. Follow the safety
instructions in this document and all other
related documentation.
WARNING: High-speed rotating equipment
can be hazardous. Do not touch the cup, or
stand in front or alongside it while it is rotating.
Do not exceed the maximum speed rating.
WARNING: Do not attempt to stop the cup
with your hands or any tool or other object.
Use braking air or let the turbine coast to a
stop.
Introduction
This operator's card contains operation, maintenance,
and troubleshooting procedures for the Nordson
RA-20R rotary atomizer. Refer to the RA-20R Rotary
Atomizer manual for installation, repair, and parts
information. Repair and parts information for the
turbine and valves used in the RA-20R rotary atomizer
are contained in separate manuals.
WARNING: Do not use defective cups. A
defective cup can quickly damage the turbine
or fail and possibly injure the operator or other
nearby personnel.
WARNING: People and equipment in the
vicinity of high-voltage electrostatic systems
can accumulate a dangerous static charge
unless they are grounded.
WARNING: Shut off the turbine air, turn off
the electrostatic voltage, and relieve the fluid
pressure before you perform maintenance,
troubleshooting, or repair tasks.
To use this equipment safely,
S
always follow the instructions in this operator's
card.
S
obtain and read the Material Safety Data Sheets
for all materials used.
1

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Summary of Contents for Nordson RA-20R

  • Page 1 Nordson RA-20R rotary atomizer. Refer to the RA-20R Rotary Atomizer manual for installation, repair, and parts information. Repair and parts information for the turbine and valves used in the RA-20R rotary atomizer are contained in separate manuals.
  • Page 2: Modifying The Spray Pattern

    If your system has automatic speed controls, 1. Install a nozzle and cup assembly on the RA-20R set the turbine speed at the ASC-6 or system rotary atomizer, if not already done. Refer to control panel.
  • Page 3: Removing And Installing The Cup Assembly And Nozzle

    6. Insert the -in. hex key, supplied with the Follow this procedure to remove and install the cup RA-20R rotary atomizer, through the back of the assembly and nozzle. cup and into the distributor (3). Turn the hex key counterclockwise (as viewed from the back of the cup) to unscrew the distributor from the cup.
  • Page 4: Operating Requirements

    300 ohms. Strip workpiece to the valve instruction sheets for repair hangers regularly. information. Periodically Perform resistance checks on your system components. Refer to the RA-20R Rotary Atomizer manual for instructions and resistance values. Operating Requirements Air Consumption Bearing air: 70 l/min at 5.5 bar...
  • Page 5: Troubleshooting

    Troubleshooting These procedures cover only the most common problems you may encounter. Refer to your RA-20R rotary atomizer manual, valve manual, or turbine manual for more information. If you cannot solve the problem with the information in your manuals, contact your local Nordson representative for help.
  • Page 6: Recommended Cups/Nozzles/Fluid Tubes

    Recommended Cups/Nozzles/Fluid Tubes Cup Assemblies Part Description Quantity Note 321330 CUP, 2-in. diameter, microfin, assembly 302126 CUP, 2-in. diameter, with fins, pads, assembly 302127 CUP, 2-in. diameter, without fins, pads, assembly 321331 CUP, 2.5-in. diameter, microfin, assembly 302130 CUP, 2.5-in. diameter, with fins, pads, assembly 302131 CUP, 2.5-in.
  • Page 7: Fluid Tubes

    Fluid Tubes Part Description Quantity Note 181 761 Tube, fluid, 0.160 in. dia orifice 168 671 Tube, fluid, 0.100 in. dia orifice...
  • Page 8 Issued 2/11 Original copyright date 1997. Nordson and the Nordson logo are registered trademarks of Nordson corporation. Viton is a registered trademark of E.I. DuPont de Nemours & Co.

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