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Low-Pressure
Color Change Manifold
Customer Product Manual
Part 331151C
Issued 10/03
For parts and technical support, call the Industrial Coating
Systems Customer Support Center at (800) 433-9319 or
contact your local Nordson representative.
This document is subject to change without notice.
Check http://emanuals.nordson.com for the latest version.
NORDSON CORPORATION AMHERST, OHIO USA
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Table of Contents
Summary of Contents for Nordson 331151C
- Page 1 For parts and technical support, call the Industrial Coating Systems Customer Support Center at (800) 433-9319 or contact your local Nordson representative. This document is subject to change without notice. Check http://emanuals.nordson.com for the latest version. NORDSON CORPORATION AMHERST, OHIO USA...
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Page 2: Table Of Contents
555 Jackson Street Amherst, OH 44001 Notice This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1999. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Nordson Corporation. The information contained in this publication is subject to change without notice. -
Page 3: Safety
Regulations and Approvals Make sure all equipment is rated and approved for the environment in which it is used. Any approvals obtained for Nordson equipment will be voided if instructions for installation, operation, and service are not followed. Part 331151C... -
Page 4: Personal Safety
If you suffer a fluid injection injury, seek medical care immediately. If possible, provide a copy of the MSDS for the injected fluid to the health care provider. Part 331151C E 2003 Nordson Corporation... -
Page 5: Fire Safety
Do not smoke, weld, grind, or use open flames where flammable materials are being used or stored. Do not heat materials to temperatures above those recommended by the manufacturer. Make sure heat monitoring and limiting devices are working properly. Part 331151C E 2003 Nordson Corporation... -
Page 6: Halogenated Hydrocarbon Solvent Hazards
Clean, maintain, test, and repair equipment according to the instructions in your equipment documentation. Use only replacement parts that are designed for use with original equipment. Contact your Nordson representative for parts information and advice. Halogenated Hydrocarbon Solvent Hazards Do not use halogenated hydrocarbon solvents in a pressurized system that contains aluminum components. -
Page 7: Description
Non−circulating valve plate Divider plate Figure 1 Color Change Manifold 1. Fluid outlet fitting 5. Non-circulating valve plate 2. Fluid return fittings 6. Circulating valve plate 3. Fluid inlet fittings 7. End plates 4. Air fittings Part 331151C E 2003 Nordson Corporation... -
Page 8: Color Change Plates
(3) and non-circulating (7) valve plates. The circulating plate has two valves and can be used for two colors. The non-circulating plate also has two valves, which can be used for color, air, or solvent. Part 331151C E 2003 Nordson Corporation... -
Page 9: Options
The flowmeter is an option that allows you to measure the fluid flow out of the color changer. NOTE: If you require a flowmeter, contact your Nordson representative. Zalak O-rings Your paint or solvent may be incompatible with the standard O-rings provided with your color change manifold. -
Page 10: Theory Of Operation
This allows the material to flow past the seat to the fluid outlet and to the applicator. If the valve seals fail, paint leaks out of the weep holes, alerting the operator that the microvalve plate requires service. Part 331151C E 2003 Nordson Corporation... -
Page 11: Installation
4. Before tightening the nut, scribe the nut at the 6 o’clock position to make sure that there will be no uncertainty about the location of the starting position. 5. Turn the nut one complete revolution, and continue to the 9 o’clock position (1 turns from finger tight). Part 331151C E 2003 Nordson Corporation... -
Page 12: Air Supply Lines
2. Pull the plate assemblies (2 and 4) apart. 3. Place the divider plate (3) between the plates. 4. Install the body clips. 5. Connect fluid tubing from the divider plate to the applicator. Part 331151C E 2003 Nordson Corporation... -
Page 13: Operation
Do not use sharp-edged tools for cleaning. Perform periodic checks to identify any leaks that may exist: between each plate in the manifold plate, at the weep holes, at the valve and valve stem at the fluid and air fittings Part 331151C E 2003 Nordson Corporation... -
Page 14: Repair
6. Place the end of the flathead screwdriver on the body clip notch and pull the clip out. Remove all body clips that hold the plate in place. 7. Pull the color change manifold apart to separate the plates. Part 331151C E 2003 Nordson Corporation... -
Page 15: Color Change Manifold Assembly
Tighten the nut by hand. Rotate the nut to the original position with a wrench. NOTE: An increase in resistance will be encountered at the original position. c. Tighten slightly with a wrench. 3. Put the plates back together. 4. Insert the body clips. Part 331151C E 2003 Nordson Corporation... -
Page 16: Microvalve Repair
Turn the microvalve tool around. b. Screw the microvalve tool onto the cap. c. Completely pull out the microvalve. View A View B View C Figure 7 Microvalve Removal 1. Microvalve 2. Microvalve tool Part 331151C E 2003 Nordson Corporation... -
Page 17: Disassembly
(1) with a wrench. Microvalve Figure 8 Disassembly 1. Piston stem 4. Valve body 6. Face seal O-ring 2. Valve end cap 5. External O-rings 7. Poppet 3. Compression spring Part 331151C E 2003 Nordson Corporation... -
Page 18: Assembly
These procedures in the following table cover only the most common problems that you may encounter. If you cannot solve the problem with the information given here, contact your local Nordson representative for help. Part 331151C E 2003 Nordson Corporation... - Page 19 If any are found, replace the poppet. Foreign matter preventing the Remove the microvalve from the poppet from sealing plate and check for foreign matter on the poppet and seat. Part 331151C E 2003 Nordson Corporation...
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Page 20: Parts
A dash (—) is used when the part number applies to all parts in the illustration. The number in the Part column is the Nordson Corporation part number. A series of dashes in this column (- - - - - -) means the part cannot be ordered separately. -
Page 21: Color Change Manifold
Item Part Description Quantity Note 333920 PLATE ASSEMBLY, end, female 338286 PLATE ASSEMBLY KIT, circulating 338287 PLATE ASSEMBLY KIT, non-circulating 338288 PLATE ASSEMBLY, end, male Figure 9 Color Change Manifold Part 331151C E 2003 Nordson Corporation... -
Page 22: Female Plate Assembly
NOTE A: Use Zalak O-ring, part 333906, if the hotpaint O-ring, part 940100, is incompatible with your paint or solvent. NS: Not Shown Female End Male End Figure 10 Female and Male End Plates Part 331151C E 2003 Nordson Corporation... -
Page 23: Circulating Plate Assembly
O-RING, Zalak, 0.239 x 0.070 in. NOTE A: Use Zalak O-ring, part 333906, if the hotpaint O-ring, part 940100, is incompatible with your paint or solvent. Circulating Non−circulating Figure 11 Circulating and Non-Circulating Valve Plates Part 331151C E 2003 Nordson Corporation... -
Page 24: Non-Circulating Plate Assembly
VALVE ASSEMBLY, microvalve 333880 S SPRING, compression 940180 S O-RING, hotpaint, 0.750 x 0.875 x 0.063 in. 940140 S O-RING, hotpaint, 0.500 x 0.625 x 0.063 in. 333892 S POPPET, microvalve Figure 12 Microvalve Assembly Part 331151C E 2003 Nordson Corporation... -
Page 25: Kits
See Figure 11. Item Part Description Quantity Note — 338281 AIR FITTING KIT, hot paint 333908 S FITTING, cartridge, half - - - - - - S O-RING, hot paint, 0.156 x 0.344 x 0.094 Part 331151C E 2003 Nordson Corporation... -
Page 26: Mounting Bar Kits
- - - - - - S LOCK WASHER, English, split, in. steel, nickel - - - - - - - - - - - - S WASHER, flat, regular, in., zinc Figure 13 Mounting Bar Kits Part 331151C E 2003 Nordson Corporation... -
Page 27: Recommended Spare Parts
333894 VALVE ASSEMBLY, microvalve 333893 TOOLKIT, microvalve NOTE A: Use Zalak O-ring, part 333906, if the hotpaint O-ring 940100 is incompatible with your paint or solvent. B: See Figure 14. Figure 14 Microvalve Tool Part 331151C E 2003 Nordson Corporation... -
Page 28: Optional Parts
S CLIP, body 333906 O-RING, Zalak, 0.239 x 0.070 in. NOTE A: Use Zalak O-ring, part 333906, if the hotpaint O-ring, part 940110, is incompatible with your paint or solvent. Figure 15 Divider Plate Assembly Part 331151C E 2003 Nordson Corporation... -
Page 29: Zalak Microvalve O-Ring Kit
See Figure 11. Order this kit if your paint or solvent is incompatible with the standard O-rings. Item Part Description Quantity Note — 338280 AIR FITTING KIT, Zalak 333908 S FITTING, cartridge, half - - - - - - S O-RING, Zalak, 0.156 x 0.344 x 0.094 in. Part 331151C E 2003 Nordson Corporation... -
Page 30: Specifications
103.2 mm 28.2 mm 19.9 mm (4.062 in.) (1.112 in.) (0.787 in.) 84.9 mm (3.345 in.) Figure 16 Plate Dimensions 1. Female end plate assembly 2. Circulating plate assembly 3. Male end plate assembly Part 331151C E 2003 Nordson Corporation...
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