Nordson NH-4 Customer Product Manual
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Nordson NH-4 Customer Product Manual

Nordson NH-4 Customer Product Manual

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NH-4 Heaters
Customer Product Manual
Part 1602369-03
Issued 02/20
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.
FM
C
US
APPROVED
NORDSON CORPORATION • AMHERST, OHIO • USA

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  • 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. APPROVED NORDSON CORPORATION • AMHERST, OHIO • USA...

  • Page 2: Table Of Contents

    ..Contact Us Notice This is a Nordson Corporation publication which is protected by copyright. Nordson Corporation welcomes requests for information, comments, and Original copyright date 2013. No part of this document may be inquiries about its products.
  • Page 3 Change Record Change Record Revision Date Change 02/13 Released 03/17 Updated DOC and labels. 02/20 Added NH-4 heaters to parts list: 1617936, 1617938, 1617937, 1617939. Part 1602369-03 E 2020 Nordson Corporation...
  • Page 4 Change Record Part 1602369-03 E 2020 Nordson Corporation...

  • Page 5: 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 1602369-03...

  • Page 6: Personal Safety

    NH-4 Fluid Heaters Personal Safety To prevent injury follow these instructions. Do not operate or service equipment unless you are qualified. Do not operate equipment unless safety guards, doors, or covers are intact and automatic interlocks are operating properly. Do not bypass or disarm any safety devices.

  • Page 7: Fire Safety

    NH-4 Fluid Heaters The National Spray Equipment Manufacturers Association has created a wallet card that you should carry when you are operating high-pressure spray equipment. These cards are supplied with your equipment. The following is the text of this card: WARNING: Any injury caused by high pressure liquid can be serious.

  • Page 8: 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 9: Description

    2. Fluid outlet 4. Fluid inlet 6. Electrical enclosure See Figure 1. The standard NH-4 heater is available in both aluminum and stainless steel versions. Refer to the Parts section for a complete listing of available heaters. The heater can be wall or dolly mounted. The heater consists of an electrical enclosure (6) and a fluid section.

  • Page 10: Theory Of Operation

    This manual covers different types of NH-4 heaters. When procedures or data differs, the following codes will be used: [EXT ADJ]—This code is used for NH-4 heaters that have an external adjustable thermostat control. [INT ADJ]—This code is used for NH-4 heaters that have an internal adjustable thermostat control.

  • Page 11: Nh-4 Heater Versions

    See Figure 3. Mount the NH-4 heater in a vertical position on a wall or panel, allowing adequate surrounding space to perform periodic maintenance. Always locate the heater as close to the spray operation as possible.

  • Page 12: Electrical

    NH-4 Fluid Heaters 232 mm 149 mm (9.13 in.) (5.866 in.) 57 mm (2.25 in.) 41.5 mm (1.63 in.) 84 mm (3.307 in.) Outlet Single passage Both sides NPTF Twin passage NPTF 4 Holes 433 mm ø9.5 mm (17.86 in.) (ø0.374 in.)

  • Page 13: Fluid Lines And Fittings

    THREE PHASE THREE PHASE L2 L1 Figure 4 NH-4 Heater Wiring Diagrams Fluid Lines and Fittings CAUTION: The heater inlet and outlet fittings use O-ring seals which form a leak-proof hydraulic seal if tightened properly. To prevent damage to the seals, do not over-tighten fittings.

  • Page 14: Multiple Heater Installations

    NH-4 Fluid Heaters Multiple Heater Installations Configure multiple heater installations in a series or parallel. See Figure 5. Install the heaters in series for all general finishing applications, except for those with very viscous materials or extremely high flow rates, such as continuous coaters.

  • Page 15: Thermometer Installation

    CAUTION: Use the stainless steel thermometer and fittings with the stainless steel NH-4 heater to prevent damage to the equipment. NOTE: If the thermometer is installed after the filter, use the hex nipple included with the heater installation to install the adapter to the filter.

  • Page 16: Filter Installation

    NH-4 Fluid Heaters Filter Installation Most coating materials and compounds eventually leave residual deposits on the inside walls of the heater. These deposits may separate from the heater as small flakes or granules, which then pass through the system and cause nozzle or fluid tip plugging.

  • Page 17: Operation

    This section covers safety precautions, and single and multiple heater operation procedures for the NH-4 heater. When a procedure is only applicable to a particular model it is identified with a code. Refer to the Description section for an explanation of these codes.

  • Page 18: Thermostat Adjustments

    Replace the hose with an insulated hose Relocate the hose or heater Install an additional NH-4 heater assembly Shutdown CAUTION: Always shut down the heater and continue to circulate coating material through the heater as it cools to avoid material curing inside the heater fluid passages.

  • Page 19: Daily Maintenance

    NH-4 Fluid Heaters Daily Maintenance WARNING: Allow only qualified personnel to perform the following tasks. Follow the safety instructions in this document and all other related documentation. WARNING: Use appropriate respiratory and skin protection when using coating materials and solvents. Obtain and read the Material Data and Safety Sheets from the manufacturer before use, and follow manufacturer’s...

  • Page 20: Troubleshooting

    Follow the safety instructions in this document and all other related documentation. These troubleshooting procedures cover only the most common problems. If you cannot solve a problem with the information given here, contact your local Nordson representative for help. Problem Possible Cause Corrective Action...

  • Page 21: Repair

    NH-4 Fluid Heaters Repair WARNING: Allow only qualified personnel to perform the following tasks. Follow the safety instructions in this document and all other related documentation. WARNING: Remove power, relieve fluid and air pressure, and allow the heater to cool down before performing any repairs. Failure to observe this warning may cause serious injury to personnel and/or damage to equipment.
  • Page 22 NH-4 Fluid Heaters Tighten screws (1) to kgSm 1.11−1.66 (8−12 ft-lbs) Figure 8 Thermostat Replacement 1. Socket head screws 5. Thermostat 9. Heat limiter 2. Lock washers 6. Lock washer 10. Heater cartridge 3. Cover 7. Screw 11. Thermostat 4. Electrical enclosure 8.

  • Page 23: Heat Limiter Replacement

    NH-4 Fluid Heaters Heat Limiter Replacement WARNING: Remove power, relieve fluid and air pressure, and allow heater to cool down before performing any maintenance. Failure to observe this warning may cause serious injury to personnel and/or damage to equipment. 1. Remove the thermostat. Refer to Thermostat Removal on page 17.

  • Page 24: Fluid Heating Reservoir Removal

    NH-4 Fluid Heaters Fluid Heating Reservoir Removal 1. Remove the thermostat. Refer to Thermostat Removal on page 17. 2. Remove the heat limiter. Refer to Heat Limiter Removal on page 19. 3. Remove the heater cartridge. Refer to Heater Cartridge Removal on page 19.

  • Page 25: High Pressure Housing Removal − Standard Heaters Only

    NH-4 Fluid Heaters High Pressure Housing Removal − Standard Heaters Only See Figure 9. 1. Remove the retaining ring (6) from the fluid passage body (2). 2. Place a wooden block on a hard surface. Grasping the reservoir assembly firmly, strike the top surface of the fluid passage body against the wood block until the lower O-ring (5) is exposed.

  • Page 26: Parts

    NH-4 Fluid Heaters Parts For parts and technical support, call the Industrial Coating Systems Customer Support Center at (800) 433-9319 or contact your local Nordson representative. Heater Reference Chart NOTE: Heaters are equipped with internal temperature adjustment unless otherwise specified.
  • Page 27 NH-4 Fluid Heaters Heater Type Volts Watts Heater Heat Thermostat Reservoir Heater Limiter/ Seal Kit Cartridge Thermostat Stainless Steel NH-4 Heaters Single Passage 1700 712905 106356 — — 245634 Single 1700 246664 — 106362 — 247532 Passage, Japan Only Single Passage...

  • Page 28: Standard Nh-4 Heaters

    Part Description Note — 245672 HEATER, NH-4, 115 Volt, 1700 watt — 247747 HEATER, NH-4, 115 Volt, EECS, 1700 watt (OBSOLETE) 982006 982006 S SCREW, socket head, M8 x 20, zinc 983150 983150 S LOCK WASHER, split, in., steel, nickel −−−−−−...
  • Page 29 B: Obsolete heater 247747 uses three screws, part 982005. C: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. D: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 30: Volt: Twin Passage - 500 Watts

    See Figure 10. Item Part Description Quantity Note — 246238 HEATER, NH-4, 115 Volt, twin passage, 500 watt 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, English, split, in., steel, nickel −−−−−− S COVER ENCLOSURE, NH-4...
  • Page 31 S FEED THRU, two-wire NOTE A: Not serviced separately. B: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. C: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 32: Volt: Twin Passage - 1000 Watts

    See Figure 10. Item Part Description Quantity Note — 246490 HEATER, NH-4, 115 Volt, twin passage, 1000 watt 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel −−−−−− S COVER ENCLOSURE, NH-4...
  • Page 33 B: Part is included in the Standard Thermostat Kit, part 106283, located on page 57. C: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. D: Part is included in the Twin Passage Reservoir Seal Kit, part 106310, located on page 58.

  • Page 34: Volt: Single And Twin Passage - 1700 Watt

    200 Volt: Single and Twin Passage — 1700 watt See Figure 10. Item Part Part Description Note — 245673 HEATER, NH-4, 200 Volt single passage — 247477 HEATER, NH-4, 200 Volt twin passage 982006 982006 S SCREW, socket head, M8 x 20, zinc 983150 983150 S LOCK WASHER, split, in., steel, nickel...
  • Page 35 S FEED THRU, two-wire NOTE A: Not serviced separately. B: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. C: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 36: 200 Volt: Single Passage - Japan Only - 1700 Watt

    Item Part Description Quantity Note — 246566 HEATER, NH-4, 200 Volt, Japan, single passage 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel - - - - - - S COVER, enclosure, NH-4...
  • Page 37 NH-4 Fluid Heaters Item Part Description Quantity Note 247933 S INSTALLATION KIT, NH-4, Japan 245777 S S ADAPTER, thermometer 901202 S S THERMOMETER 901933 S S KEY, hexagon, 6 mm 972180 S S ELBOW, male, 37, 20 JIC x -in. NPT, 2−...

  • Page 38: 200 Volt: Twin Passage - Japan Only - 1700 Watt

    See Figure 11. Item Part Description Quantity Note 248162 HEATER, NH-4, 200 Volt, Japan, twin passage 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel - - - - - - S COVER, enclosure, NH-4...
  • Page 39 Item Part Description Quantity Note 247481 S INSTALLATION KIT, NH-4, Japan 246732 S S ADAPTER, thermometer, WP, NH-4 901202 S S THERMOMETER 901933 S S KEY, hexagon, 6 mm 972182 S S ELBOW, male, 37, -16 JIC x -in. NPT,...

  • Page 40: Volt: Single Passage - 1700 Watt

    Part Description Quantity Note — 245674 HEATER, NH-4, 230 Volt — 247748 HEATER, NH-4, 230 Volt, Baseefa 982006 982006 S SCREW, socket head, M8 x 20, zinc 983150 983150 S LOCK WASHER, split, in., steel, nickel - - - - - -...
  • Page 41 B: Heater, part 247748, has a quantity of three screws, part 982005. C: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. D: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 42: Volt: Twin Passage - 1000 Watt

    Item Part Description Quantity Note — −−−−−− HEATER, NH-4, 230 Volt, twin passage, 1000 watt, EECS (OBSOLETE) 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel - - - - - -...
  • Page 43 S SCREW, chez head, slotted, M4 x 12, zinc NOTE A: Not serviced separately. B: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. C: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 44: Volt: Twin Passage - 1700 Watt

    See Figure 12. Item Part Description Quantity Note — 247478 HEATER, NH-4, 230 Volt, twin passage, 1700 watts 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel - - - - - -...
  • Page 45 S FEED THRU, two-wire NOTE A: Not serviced separately. B: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. C: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 46: Twin Passage - 1700 Watt

    380 Volt: Single Passage and Twin Passage — 1700 watt See Figure 12. Item Part Part Part Description Note — 245675 HEATER, NH-4, 380 Volt, single passage — 1617936 HEATER, NH-4, 380 Volt, single passage, Baseefa — 247479 HEATER, NH-4, 380 Volt, twin passage...
  • Page 47 S S S O-RING, hotpaint, -in. tube - - - - - - - - - - - - - - - - - - S S BODY, fluid passage, NH-4 245585 245585 245585 S S HOUSING, pressure, NH-4 986915...
  • Page 48 S FEED THRU, two-wire NOTE A: Not serviced separately. B: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. C: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.
  • Page 49 NH-4 Fluid Heaters This page intentionally left blank. Part 1602369-03 E 2020 Nordson Corporation...

  • Page 50: 1700 Watt

    Note — 1617937 HEATER, NH-4, 460 Volt, Baseefa — 245676 HEATER, NH-4, 460 Volt — 247480 HEATER, NH-4, 460 Volt, twin passage, 1700 watt 982006 982006 982006 S SCREW, socket head, M8 x 20, zinc 983150 983150 983150 S LOCK WASHER, split, in., steel,...
  • Page 51 S FEED THRU, two-wire NOTE A: Not serviced separately. B: Part is included in the Standard NH-4 Thermostat/Heat Limiter Kit, part 106363, located on page 57. C: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 52: Stainless Steel Nh-4 Heaters

    Item Part Description Quantity Note — 712905 HEATER, NH-4, stainless steel, 115 Volt 982006 S SCREW, socket, head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel - - - - - - S COVER, enclosure, NH-4...
  • Page 53 NH-4 Fluid Heaters Item Part Description Quantity Note 246657 S INSTALLATION KIT, stainless steel, NH-4 115290 S S ADAPTER, thermometer, stainless steel 901202 S S THERMOMETER 901933 S S KEY, hexagon, 6 mm 972718 S S ELBOW, male, 37, 20 x -in.

  • Page 54: Volt: Single Passage - 1700 Watt

    230 Volt: Single Passage — 1700 watt See Figure 13. Item Part Part Description Note — 246665 HEATER, NH-4, stainless steel, 230 Volt — 238502 HEATER, NH-4, 230 Volt, stainless steel, Baseefa 982006 982006 S SCREW, socket, head, M8 x 20, zinc 983150...
  • Page 55 NH-4 Fluid Heaters Item Part Part Description Note 246657 246657 S INSTALLATION KIT, stainless steel, NH-4 115290 115290 S S ADAPTER, thermometer, stainless steel 901202 901202 S S THERMOMETER 901933 901933 S S KEY, hexagon, 6 mm 972718 972718 S S ELBOW, male, 37, -20 x -in.

  • Page 56: Volt: Single Passage - 1700 Watt

    See Figure 13. Item Part Description Note — 1617938 HEATER, NH-4, 380 Volt, single passage, stainless steel, Baseefa 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel - - - - - -...
  • Page 57 S FEED THRU, two-wire NOTE A: Not serviced separately. B: Part is included in the Stainless Steel NH-4 Thermostat/Heat Limiter Kit, part 106356, located on page 57. C: Part is included in the Standard Thermostat Kit, part 106283, located on page 57.

  • Page 58: Volt: Single Passage − 1700 Watt

    Part Description Note — 248334 HEATER, NH-4, stainless steel, 460 Volt — 1617939 HEATER, NH-4, stainless steel, 460 Volt, Baseefa 982006 982006 S SCREW, socket, head, M8 x 20, zinc 983150 983150 S LOCK WASHER, split, in., steel, nickel - - - - - -...
  • Page 59 NH-4 Fluid Heaters Item Part Part Description Note 246657 246657 S INSTALLATION KIT, stainless steel, NH-4 115290 115290 S S ADAPTER, thermometer, stainless steel 901202 901202 S S THERMOMETER 901933 901933 S S KEY, hexagon, 6 mm 972718 972718 S S ELBOW, male, 37, 20 x -in.

  • Page 60: Volt: Single Passage - Japan Only - 1700 Watt

    Item Part Description Quantity Note — 246664 HEATER, NH-4, 200 Volt, stainless steel, Japan 982006 S SCREW, socket head, M8 x 20, zinc 983150 S LOCK WASHER, split, in., steel, nickel - - - - - - S COVER, enclosure, NH-4...

  • Page 61: Kits And Spare Parts

    106356. Standard NH-4 Thermostat/Heat Limiter Kit Part Description Quantity 106363 THERMOSTAT/HEAT LIMITER SERVICE KIT, NH-4 (aluminum heater) - - - - - - S HEAT LIMITER, NH-4 - - - - - - S THERMOSTAT, probe-type 982003...

  • Page 62: External Adjust Kit

    106362 THERMOSTAT SERVICE KIT, manual reset 248093 S THERMOSTAT, dual, with bracket 245773 S APPLICATOR, heat conductive paste, 1 cc Standard NH-4 Single Passage Fluid Reservoir Seal Kit Part Description Quantity 106282 SINGLE PASSAGE SEAL SERVICE KIT, heater, NH-4 945017 S O-RING, hotpaint, -in., tube...

  • Page 63: Heater Cartridges (Standard And Stainless Steel Heaters)

    HEATER CARTRIDGE, 380V/1700W 245637 HEATER CARTRIDGE, 460V/1700W Recommended Spare Parts Keep the following parts in inventory to avoid unplanned downtime. Quantities listed support a single NH-4 heater. Adjust order quantities based on the number of heaters in service. Part Description Quantity...
  • Page 64 NH-4 Fluid Heaters Part 1602369-03 E 2020 Nordson Corporation...
  • Page 65 NH-4 Fluid Heaters USE FOR THE FOLLOWING HEATERS: 245672 247747 246238 246490 245673 247477 EECS Only Figure 10 Standard Steel Plated NH-4 Heaters − Single and Twin Passage, 115 and 200 Volt Part 1602369-03 E 2020 Nordson Corporation...
  • Page 66 NH-4 Fluid Heaters Part 1602369-03 E 2020 Nordson Corporation...
  • Page 67 NH-4 Fluid Heaters USE FOR THE FOLLOWING HEATERS: 246566 248162 Figure 11 Standard Steel Plated NH-4 Heaters − Single and Twin Passage, 200 Volt − Japan Only Part 1602369-03 E 2020 Nordson Corporation...
  • Page 68 NH-4 Fluid Heaters Part 1602369-03 E 2020 Nordson Corporation...
  • Page 69 USE FOR THE FOLLOWING HEATERS: 245674 247748 247750 247478 245675 247479 245676 247480 1617936 1617937 EECS Only Figure 12 Standard Steel Plated NH-4 Heaters − Single and Twin Passage, 230, 240, 380, 460 Volt Part 1602369-03 E 2020 Nordson Corporation...
  • Page 70 NH-4 Fluid Heaters Part 1602369-03 E 2020 Nordson Corporation...
  • Page 71 NH-4 Fluid Heaters USE FOR THE FOLLOWING HEATERS: EECS Only 712905 246665 238502 248334 1617938 1617939 Figure 13 Stainless Steel NH-4 Heaters − Single and Twin Passage, 115, 230, 230, 380 EECS, 460 Volt Part 1602369-03 E 2020 Nordson Corporation...
  • Page 72 NH-4 Fluid Heaters Part 1602369-03 E 2020 Nordson Corporation...
  • Page 73 NH-4 Fluid Heaters USE FOR THE FOLLOWING HEATER: 246664 Figure 14 Stainless Steel NH-4 Heaters − Single and Twin Passage, 200 Volt − Japan Only Part 1602369-03 E 2020 Nordson Corporation...
  • Page 74 NH-4 Fluid Heaters Part 1602369-03 E 2020 Nordson Corporation...
  • Page 75 EU DECLARATION of Conformity Product: NH-4 Liquid Heater Models: NH-4, Stainless Steel and Aluminum Models. Description: This is a heater used for heating liquids before they are sprayed or dispensed from an applicator. These liquids could be flammable or non-flammable.

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