Liquid Adhesive Detection System Alarm Box

Liquid Adhesive Detection System Alarm Box Customer Product Manual Part NORDSON CORPORATION AMHERST, OHIO USA

Nordson Corporation welcomes requests for information, comments and inquiries about its products. Address all correspondence to Nordson Corporation Attn: Customer Service 11475 Lakefield Drive Duluth, GA 30097 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. Trademarks AquaGuard, Blue Box, Control Coat, Equi=Bead, Excel 2000, FloMelt, FoamMelt, FoamMix, Helix, Hot Shot, Hot Stitch, Meltex, MicroSet, MultiScan, Nordson, the Nordson logo, OmniScan, Porous Coat, Posi-Stop, RBX, Sure-Bond, UniScan, UpTime, and Versa-Spray are registered trademarks of of Nordson Corporation. BetterBook SM, CF, Controlled Fiberization, Easy-Screen, Fibermelt, Flo-Tracker, PrintGuard, Package of Values, and Swirl Coat are trademarks of Nordson Corporation. 1999 Nordson Corporation

Table of Contents i Table of Contents 1. Safety..................................................... 1 Safe Operation........................................... 1 Safety Symbols.......................................... 2 Qualified Personnel....................................... 3 Intended Use............................................ 3 Installation and Electrical Connections....................... 4 Operation............................................... 5 Less-obvious Dangers.................................. 6 Action in the Event of System Malfunction................. 6 Maintenance/Repair...................................... 6 Cleaning................................................ 8 Liquid Adhesives......................................... 9 2. Description................................................ 10 Specifications........................................... 11 Dimensions............................................. 11 3. Installation................................................ 12 Unpacking.............................................. 12 Mounting............................................... 12 Connecting Electrical Service............................. 12 Connecting the Alarm Box to the Liquid Adhesive Detection System................................................. 13 Wiring the Alarm Box Outputs............................. 14 Setting the A/B Toggle Switch............................. 15 1999 Nordson Corporation

ii Table of Contents 4. Operation................................................. 16 Turning the Alarm Box On................................ 16 Turning the Alarm Box Off................................ 16 5. Faults.................................................... 16 Understanding Momentary Faults......................... 16 Understanding Continuous Faults.......................... 17 6. Troubleshooting........................................... 17 7. Repair.................................................... 21 Replacing Fuses........................................ 21 Terminal Block Fuse Replacement....................... 22 Power Supply Fuse Replacement....................... 22 8. Parts..................................................... 23 Using the Illustrated Parts List............................. 23 WM 500 and WM 408/500 Alarm Box.............................................. 24 Recommended Spare Parts............................... 27 9. Wiring Diagrams........................................... 28 Standard Alarm Box..................................... 28 Special Alarm Box....................................... 29 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 1 Liquid Adhesive Detection System Alarm Box WARNING: Allow only qualified personnel to perform the following tasks. Observe and follow the safety instructions in this document and all other related documentation. 1. Safety Safety instructions contained in this section and throughout this document apply to tasks that may be performed with the liquid adhesive application system components and the liquid adhesive used. It is very important that these safety instructions are always followed. Failure to do so could result in personal injury, death and/or damage to the system or other equipment. Safe Operation With this in mind, here are some basic safety recommendations: Read and become familiar with the Safety section prior to installing, operating maintaining or repairing the system. Read and follow the warnings which appear within the text and are related to specific tasks. Store this document within easy reach of personnel operating or maintaining the system. Wear personal protective equipment such as safety goggles, gloves or respiratory equipment where this is required by peculiarities of the system and/or the material. Familiarize yourself with and follow all safety instructions prescribed by your company, general accident prevention regulations and government safety regulations. 1999 Nordson Corporation

2 Liquid Adhesive Detection System Alarm Box Safety Symbols The following symbols are used to warn against dangers or possible sources of danger. Become familiar with them! Failure to heed a warning could lead to personal injury, death and/or damage to the system or other equipment. WARNING: Failure to observe may result in personal injury, death, or equipment damage. WARNING: Risk of electrical shock. Failure to observe may result in personal injury, death, or equipment damage. WARNING: Disconnect equipment from the line voltage. WARNING: Danger! High pressure. Wear safety goggles when working on a liquid adhesive application system. WARNING: Risk of explosion or fire. Fire, open flames and smoking prohibited. WARNING: System and material pressurized. Release pressure. Failure to observe may result in serious injury. CAUTION: Failure to observe may result in equipment damage. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 3 Qualified Personnel Qualified personnel is defined here as individuals who thoroughly understand the equipment and its safe operation, maintenance and repair. Qualified personnel are physically capable of performing the required tasks, familiar with all relevant safety rules and regulations and have been trained to safely install, operate, maintain and/or repair the equipment. It is the responsibility of the company operating the equipment to see that its personnel meet these requirements. Intended Use The system is designed and intended to be used only for the purpose described in the Description section. Uses not in accordance with that section or as described in this document are considered unintended uses and not in accordance with governing regulations. WARNING: Use of this equipment in ways other than described in this document may result in personal injury, death, or equipment damage. The following actions of the owner or operator of the system are some, but not all, examples of unintended use which would permit Nordson to claim it is not responsible for personal injury or property damage arising from such unintended use: Unapproved modifications or changes to the system Failure to comply with the safety instructions Failure to comply with the instructions concerning installation, use, operation, maintenance or repair, or when these tasks are carried out by unqualified personnel Use of inappropriate or incompatible foreign materials or auxiliary equipment Failure to observe workplace safety rules or regulations issued by government authorities or safety councils. 1999 Nordson Corporation

4 Liquid Adhesive Detection System Alarm Box Installation and Electrical Connections Prior to installation, check intended location and surrounding area for any potential hazards during operation. All electrical, pneumatic, gas and hydraulic connections and installation of all system components may only be carried out by qualified personnel. Observe installation instructions for components and accessories. Equipment must be properly grounded and fused according to the rated current consumption (see ID plate). Cables which run outside the system must regularly be checked for wear or damage. Power supply wire gauge and insulation must be sufficient to handle rated current consumption. Cables must never be squeezed or pinched. Do not locate cables or hoses in high traffic areas. Check liquid adhesive feed hoses, screwed connections and compressed air lines regularly for leaks. These are to be replaced at the first signs of cracks, brittleness etc. Release system pressure completely beforehand. WARNING: Failure to install the system properly, and especially failure to ensure electrical, pressurized and high pressure feed connections are made correctly may result in serious injury or death. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 5 Operation The system should only be operated when it is in working order. It should only by operated by qualified persons following all regulations valid for liquid adhesive systems. Never allow the system to be operated by personnel under the influence of substances which reduce their reaction times, or who are not able to operate the equipment for physical reasons. Prior to each startup of the system, check protection and warning devices and make sure they are fully functional. Do not operate the equipment if these devices are not functioning properly. When the removal of safety equipment is required for installation, maintenance or repair, it must be reconnected immediately upon completion of the work. In a humid environment, only equipment featuring a corresponding class of protection may be operated. Do not operate the system in an explosive environment. Keep parts of the body and clothing away from rotating parts. Do not wear loose articles of clothing when operating or servicing equipment with rotating parts. Remove wrist watches, rings, necklaces or similar jewelry and pin up or cover long hair before performing any work on or with the equipment. The wearing of protective gloves may prove hazardous in certain circumstances where rotating parts are present and may therefore be forbidden. To carry out measurements on the substrate or system components, switch off parent machine and/or system and wait until the equipment comes to a standstill. Never point guns or applicator nozzles at yourself or other persons. 1999 Nordson Corporation

6 Liquid Adhesive Detection System Alarm Box Less-obvious Dangers WARNING: An operator or service technician working with the equipment should be aware of the less-obvious dangers that often cannot be completely minimized at production sites: Pressurized system components The possibility that electrical potentials may remain in the system after the system was de-energized Liquid adhesive vapors Hydraulically or pneumatically operated system components Uncovered winding parts Action in the Event of System Malfunction If the system malfunctions, switch it off immediately. Turn the main switch off, or use emergency stop switch or similar safety feature as provided. After equipment has come to a standstill and before reoperating it, have it repaired by qualified personnel. Maintenance/Repair Allow only qualified personnel to perform the procedures described in this document. Work should only be carried out on a completely depressurized system, following all safety procedures. NOTE: Depending on the configuration of the liquid adhesive application system, high pressure may remain between application head(s) and pressure regulator or pump/s even after the system has been switched off using the main switch or the emergency stop. This especially applies to multi-hose configurations between pump/s and application head/s. Prior to maintenance and repair work it is therefore essential to ensure that all liquid adhesive application system components are depressurized as follows: 1. Release input pressure in front of pump by shutting off customer compressed air supply. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 7 2. Release any remaining system pressure behind the pumps by manually operating the application heads. Secure pneumatically-and hydraulically-operated equipment against uncontrolled movement. Switch off system electrically. WARNING: Some voltage is still present in the control cabinet even after equipment has been turned off at the main switch. Complete the following steps prior to maintenance or repair: 1. Disconnect external power supply. 2. Lock out external power supply. 3. Check no voltage is present. 4. Ground and short. 5. Cover nearby live sections. If liquid adhesive application system is left idle for extended periods (e.g. overnight or long breaks) Nordson recommends applying Vaseline to the application head nozzles to prevent them from drying out and becoming blocked as a result. Only use genuine Nordson parts. 1999 Nordson Corporation

8 Liquid Adhesive Detection System Alarm Box Cleaning NOTE: Always refer to the liquid adhesive manufacturer s Material Safety Data Sheet or material information sheet before working with any cleaning fluids. WARNING: Never clean any aluminium part or flush any system using halogenated hydrocarbon fluids. Examples of common halogenated hydrocarbons are: dichloromethylene, 1,1,1-trichloroethylene and perchlorethylene. Halogenated hydrocarbons may react violently with aluminium parts. Never use an open flame to clean the system or its components. Check that (warm) water can be used to clean the liquid adhesive system components, possibly with the addition of household washing-up liquid. If this is not possible, use only the cleaning fluid stated in the liquid adhesive manufacturer s information. If the manufacturer recommends heating the cleaner, note the flash point. Ensure sufficient room ventilation to draw off vapors. WARNING: Fire, open flames and smoking are prohibited when cleaning fluids are used. Observe all explosion prevention regulations. Cleaning fluids may only be heated using temperature controlled and explosion-protected heaters. Disposal must be according to the waste key in the DIN Safety Data Sheet. Liquid adhesives or residue, solvent or separating agents must not be released into open waterways. In the case of a leak or spillage, contain liquid and if necessary use an absorbant material e.g. sawdust to soak it up; then proceed according to the relevant waste disposal regulations. If the liquid adhesive application system is to be idle for an extended period, the entire system should be flushed and outlets sealed with Vaseline. Warm water is usually used to flush application systems with which water based liquid adhesives are processed. If the liquid adhesive manufacturer specially recommends a flushing agent, the manufacturer s safety and disposal details must be followed. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 9 Liquid Adhesives As there is a wide variety of liquid adhesives available with different compositions and characteristics, it is impossible here to give an exhaustive list of safety notes reflecting the typical characteristics of liquid adhesives. The use of liquid adhesives in Nordson s liquid adhesive application systems therefore requires reference to the liquid adhesive manufacturer s documents beforehand. Information relating to safety aspects e.g. concerning solvent content, hazards and countermeasures in the event of liquid adhesive coming into contact with skin or mucous membranes are contained in the technical data sheets and the DIN Safety Data Sheets from the manufacturer. NOTE: Always refer to the manufacturer s Material Safety Data Sheet or material information before working with any liquid adhesives. It may be necessary to refer to the manufacturer s notes on the use of materials from a third party. These may be required for processing a liquid adhesive, but hazards arising from their use are not necessarily mentioned by the manufacturer of the liquid adhesive. Liquid adhesives may still give off vapors when they are processed correctly. The smell produced can cause some annoyance. This is especially true where liquid adhesives are used that contain solvent, thus requiring the use of breathing equipment e.g. a filter. If the prescribed processing conditions are not followed, harmful decomposition products may develop. Therefore, the vapors must be removed. Wash hands well before breaks and when work is finished. If liquid adhesive comes into contact with eyes or mucous membranes, rinse well with water - especially the eyes. Change damp clothes, and seek medical advice if it is swallowed. Disposal must be according to the waste key in the DIN Safety Data Sheet. Liquid adhesives or residue, solvent or separating agents must not be released into open waterways. In the case of a leak or spillage, contain liquid and if necessary use an absorbant material e.g. sawdust to soak it up; then proceed according to the relevant waste disposal regulations. If solvents or separating agents are used to process a liquid adhesive, follow the safety and disposal information from the manufacturer. 1999 Nordson Corporation

10 Liquid Adhesive Detection System Alarm Box 2. Description This alarm box, which can be used with WM 500 (standalone) and WM 408/500 (combination) liquid adhesive detection systems, uses a horn and light to indicate a defective product. The alarm box: Produces a visible and audible indication that a defective product has been detected by the liquid adhesive detection system Provides a convenient trigger that can be used to shut down the parent machine in the event of a continuous fault condition Provides a 24 Vdc power output for a carton ejector, kicker, or ink marking unit (for WM 408/500 combination systems only) The alarm box will operate on 85 264 Vac. Refer to Specifications for more information. Table 1 shows how the alarm box responds differently to faults on WM 500 units and the WM 408/500 systems. Contacts Momentary fault Continuous fault Table 1 Alarm Box Fault Responses WM 408/500 Units (contacts normally open) With a Fault, the Contacts Close Horn Light Alarm Box Response Close Horn Light PMI contacts change state Cast-out 1 Close 24 Vdc available at terminal block XT-2, positions 1 and 8 WM 500 Units (contacts normally closed) With a Fault, the Contacts Open Horn Light Alarm Box Response Open Horn Light PMI contacts change state Open Not Used 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 11 Specifications Refer to the following chart for product specifications. Item Incoming power Ambient operating temperature Outputs Inputs 85 264 Vac 47 440 Hz 0 C 50 C Specification Maximum load for Cast-out 1, 24 Vdc output is 25 W (1 Amp) Parent Machine Interlock contact rating 5 Amp 240 Vac and 5 Amp 28 Vdc WM 500 Systems Two sets of normally closed contacts: Momentary fault Continuous fault WM 408/500 Systems Three sets of normally open contacts: Momentary fault Continuous fault Cast-out 1 Dimensions See Figure 1 for the dimensions of the alarm box. 277.6 mm (10.93 in.) 342.9 mm (13.50 in.) 323.8 mm (12.75 in.) 374.6 mm (14.75 in.) 129.5 mm (5.10 in.) 203.2 mm (8.00 in.) 5710001A Fig. 1 Alarm Box Dimensions 1999 Nordson Corporation

12 Liquid Adhesive Detection System Alarm Box 3. Installation This section contains guidelines and procedures for installing the alarm box. Unpacking Exercise normal care to prevent equipment damage during unpacking. After unpacking the equipment, inspect it for any damage that may have occurred during shipping. Look for dents and scratches and make sure all fasteners are tight. Report any damage to your Nordson representative. Mounting Use the following guidelines when mounting the alarm box. Choose a convenient location. Isolate the alarm box from vibration. Provide adequate room for routing wires and cables Mount the alarm box by inserting 1 / 4 -in. bolts through the four holes (two on the top and two on the bottom) on the alarm box. Connecting Electrical Service Use this procedure to connect electrical service to the alarm box. WARNING: Risk of electrical shock. Failure to observe may result in personal injury, death, or equipment damage. 1. Disconnect and lock out electrical power to the input power supply. 2. Loosen the screws on the latches that secure the alarm box door and then lift the lip of the latches over the edge of the door. 3. See Figure 2. Open the alarm box door and locate the strain relief (4) on the lower left corner of the alarm box. 4. Route the incoming line voltage (line 1 and line 2) and ground wire through the strain relief (4) into the alarm box. 5. Connect line 1 to the L1 connector (2). 6. Connect line 2 to the L2 connector (3). 7. Connect the ground wire to the ground connector (1). 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 13 1 2 3 Fig. 2 Electrical Connections 1. Ground connector 2. L1 connector 4 3. L2 connector 4. Strain relief 5710002A Connecting the Alarm Box to the Liquid Adhesive Detection System Use this procedure to connect the alarm box to the liquid adhesive detection system. 1. See Figure 3. Locate the alarm cable (1) extending from the bottom of the alarm box. 1 5710003A Fig. 3 Alarm Cable of Alarm Box 1. Alarm cable 1999 Nordson Corporation

14 Liquid Adhesive Detection System Alarm Box Connecting the Alarm Box to the Liquid Adhesive Detection System (contd.) 2. See Figure 4. Plug the other end of the alarm cable into the alarm output (1) on the back of the liquid adhesive detection system. 1 Fig. 4 Alarm Cable Output of Liquid Adhesive Detection System 1. Alarm output 5710010A Wiring the Alarm Box Outputs Use this procedure to wire the alarm box outputs. 1. Locate terminal block XT-2 on the lower right side of the din rail inside the alarm box. 2. See Figure 5 and use it as a reference for wiring and securing the outputs. 3. Route the wires through the strain relief at the lower right side of the alarm box. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 15 1 2 3 4 5 6 7 8 9 10 11 12 13 G 1 2 3 4 5 6 7 8 9 10 11 12 13 G XT 2 CAST OUT 1 + OUTPUT 24Vdc NORMALLY OPEN MACHINE INTERLOCK CONTACTS NORMALLY CLOSED MACHINE INTERLOCK CONTACTS CAST OUT 1 OUTPUT SAME AC VOLTAGE L2 AS L1 AND L2 (ONLY ON PART 322 544) L1 5710004A Fig. 5 Wiring Alarm Box Outputs Setting the A/B Toggle Switch The toggle switch allows the alarm box to work with normally open alarm contacts (WM 408/500) or with normally closed alarm contacts (WM 500). Set the toggle switch to the appropriate position. Set the switch to position A if you are connecting the alarm box to a WM 408/500 combination system. Set the switch to position B if you are connecting the alarm box to a WM 500 standalone system. Installation is complete. Close the alarm box door and secure the latches. 1999 Nordson Corporation

16 Liquid Adhesive Detection System Alarm Box 4. Operation This section contains operating instructions for the alarm box. Turning the Alarm Box On Follow this procedure to use your alarm box. 1. Turn on the liquid adhesive detection system. Refer to your system manual for the startup procedure. 2. Place the alarm box power switch in the on position and verify that the green power indicator is on. The alarm box is now activated and will alert you when the liquid adhesive detection system detects a defective product. Turning the Alarm Box Off To turn off the alarm box, place the power switch in the off position and verify that the green power indicator is off. 5. Faults The alarm box receives two types of faults from the liquid adhesive detection system: momentary and continuous. Understanding Momentary Faults Momentary faults occur when the condition that causes the fault requires no operator intervention to clear the fault. During a momentary fault, the alarm horn and light will operate for 3 seconds. When the system detects a momentary fault on a: WM 500 standalone system, the alarm box input contacts open for 3 seconds. WM 408/500 combination system, the alarm box input contacts close for 3 seconds. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 17 Understanding Continuous Faults Continuous faults occur when the condition that causes the fault requires operator intervention to clear the fault. During a continuous fault, the alarm horn and light will operate continuously until the fault is cleared at the liquid adhesive system s control panel. When the system detects a continuous fault on a: WM 500 standalone system, the alarm box input contacts open continuously and will not close without operator intervention. WM 408/500 combination system, the alarm box input contacts close continuously and will not open without operator intervention. 6. Troubleshooting If you experience problems with your alarm box, first check for any loose or disconnected wiring. If this does not resolve the problem, then refer to the troubleshooting table, which lists the possible problems and refers you to tests and corrective actions for handling those problems. When necessary, the table refers to more detailed repair procedures. Refer to your liquid adhesive detection system manual for further troubleshooting procedures. WARNING: Risk of electrical shock. Failure to observe electrical safety procedures may result in personal injury or death. Allow only qualified personnel to perform these maintenance procedures. Observe all high-voltage indicators. WARNING: Risk of equipment damage, personal injury, or death. Disconnect and lock out electrical power to the unit, including input/output (I/O) lines. WARNING: Electrostatic discharge can damage electrical components or result in personal injury or death. Be sure you are properly grounded before beginning any electrical troubleshooting procedure that involves working inside the electrical enclosure. 1999 Nordson Corporation

18 Liquid Adhesive Detection System Alarm Box 6. Troubleshooting (contd.) Problem Possible Cause Corrective Action 1. The alarm box does not respond to any input signals from the detection system. 2. There is no 24 Vdc power. Continued on next page Alarm box not turned on No power to alarm box Liquid adhesive detection system not in run mode Alarm box not connected to detection system (on WM 408/500 adhesive detection systems only) No 24 Vdc power Fuse(s) F1 and F2 blown No AC power to 24 Vdc power supply Test: Check the position of the power switch. Corrective Action: Place the alarm box power switch in the on position. Test: Check for 85 264 Vac between terminals L1 and L2. Corrective Action: Connect 85 264 Vac power to terminals L1 and L2. Place the system in the run mode. Refer to the system manual. Test: Check the electrical connection between the liquid adhesive system and the alarm box. Corrective Action: Refer to Connecting the Alarm Box to the Liquid Adhesive Detection System in Installation. Test: Check for 24 Vdc between the positive (+) and negative ( ) terminals on XT-1. Corrective Action: Refer to No 24 Vdc power problem. Test: Check the fuses in terminals L1 and L2 on terminal block XT-1. Corrective Action: Replace blown fuse. Refer to Replacing Fuses in Repair. Test: Check the position of the power switch. Corrective Action: Place the alarm box power switch in the on position. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 19 Problem 2. There is no 24 Vdc power. (contd.) Possible Cause No AC power to 24 Vdc power supply Fuse on 24 Vdc power supply blown Corrective Action Test: Check for 85 264 Vac between terminals L1 and L2. Corrective Action: Connect 85 264 Vac power to terminals L1 and L2. Test: Check the fuses in the XT-1 L1 and L2 terminals. Corrective Action: Replace blown fuse. Refer to Replacing Fuses in Repair. Test: Check the fuse on the power supply. Corrective Action: Replace blown fuse. Refer to Replacing Fuses in Repair. 24 Vdc power supply bad Test: 1. Verify that the position of the alarm box power switch is on. 2. Verify that there is 85 264 Vac between the L1 and L2 terminals. 3. Verify that the fuses in the XT-1 L1 and L2 terminals are operating. 4. Verify that the fuse on the power supply is good. Corrective Action: Replace the power supply. 3. The alarm box does not respond to a momentary fault signal, but it responds normally to continuous fault and cast-out 1 signals. Relay KA1 loose in socket Relay KA1 defective Test: Push relay KA1 firmly into its socket and retest. Test: Unplug relays KA1 and KA2 and switch their positions. If the horn and light now work for a momentary fault but not for a continuous fault, relay KA1 is defective. Corrective Action: Replace relay KA1. Refer to Replacing Relays in Repair. Continued on next page 1999 Nordson Corporation

20 Liquid Adhesive Detection System Alarm Box 6. Troubleshooting (contd.) Problem Possible Cause Corrective Action 4. The alarm box does not respond to a continuous fault signal, but it responds normally to momentary fault and cast-out 1 signals. 5. For WM 408/500 units only: there is no 24 Vdc power available at XT-2 positions 1 and 8 in response to a cast-out 1 signal, but the alarm box responds normally to momentary fault and continuous fault signals. 6. The horn and light operate continuously. Relay KA2 loose in socket Relay KA2 defective Relay KA3 loose in socket Relay KA3 defective A/B toggle switch in wrong position Test: Push relay KA2 firmly into its socket and retest. Test: Unplug relays KA1 and KA2 and switch their positions. If the horn and light now work for a continuous fault but not for a momentary fault, relay KA2 is defective. Corrective Action: Replace relay KA2. Refer to Replacing Relays in Repair. Test: Push relay KA3 firmly into its socket and retest. Test: Unplug relays KA1 and KA3 and switch their positions. If the horn and light no longer work for a momentary fault, but cast-out 1 now works, relay KA3 is defective. Corrective Action: Replace relay KA3. Refer to Replacing Relays in Repair. Change the position of A/B toggle switch and check for normal operation: Position A is for WM 408/500 combination systems. Position B is for WM 500 standalone systems only. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 21 7. Repair Troubleshooting contains diagnostic procedures that may identify failed components. This section contains procedures for replacing alarm box components. Refer to Parts to order replacement components. Replacing Fuses There are three fuses in the alarm box-two in the XT-1 terminal block and one on the power supply. Use these procedures to replace a fuse. WARNING: Risk of electrical shock. Failure to observe electrical safety procedures may result in personal injury or death. Allow only qualified personnel to perform these procedures. Observe all high-voltage indicators. WARNING: Risk of equipment damage, personal injury, or death. Disconnect and lock out electrical power to the unit, including input/output (I/O) lines. WARNING: Electrostatic discharge can damage electrical components or result in personal injury or death. Be sure you are properly grounded before beginning any electrical troubleshooting procedure that involves working inside the electrical enclosure. 1. Place the alarm box power switch to the off position. 2. Loosen the screws on the latches that secure the alarm box door and then lift the lip of the latches over the edge of the door. 3. Open the alarm box door and locate the blown fuse. 1999 Nordson Corporation

22 Liquid Adhesive Detection System Alarm Box Terminal Block Fuse Replacement 1. See Figure 6. Lift the tabs marked L1 and L2 to access the F1 and F2 fuses. 2. Remove the blown fuse and insert a new fuse of the same type. Refer to Recommended Spare Parts in Parts for part numbers. 3. Snap the tabs back into place on the terminal block. 4. Close the alarm box door and secure the latches. Fig. 6 Accessing Fuses F1 and F2 5710006A Power Supply Fuse Replacement 1. Remove the blown fuse from the power supply and insert a new fuse of the same type. Refer to Recommended Spare Parts in Parts for fuse part numbers. 2. Close the alarm box door and secure the latches. 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 23 8. Parts To order parts, call the Nordson Customer Service Center or your local Nordson representative. Use this five-column parts list, and the accompanying illustration, to describe and locate parts correctly. Using the Illustrated Parts List Numbers in the Item column correspond to numbers that identify parts in illustrations following each parts list. The code NS (not shown) indicates that a listed part is not illustrated. A dash ( ) is used when the part number applies to all parts in the illustration. The six-digit 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. The Description column gives the part name, as well as its dimensions and other characteristics when appropriate. Indentions show the relationships between assemblies, subassemblies, and parts. Item Part Description Quantity Note 000 000 Assembly 1 1 000 000 Subassembly 2 A 2 000 000 Part 1 If you order the assembly, items 1 and 2 will be included. If you order item 1, item 2 will be included. If you order item 2, you will receive item 2 only. The number in the Quantity column is the quantity required per unit, assembly, or subassembly. The code AR (As Required) is used if the part number is a bulk item ordered in quantities or if the quantity per assembly depends on the product version or model. Letters in the Note column refer to notes at the end of each parts list. Notes contain important information about usage and ordering. Special attention should be given to notes. 1999 Nordson Corporation

24 Liquid Adhesive Detection System Alarm Box WM 500 and WM 408/500 Alarm Box See Figure 7. Item Part Description Quantity Note 322 544 Alarm box, WM 500 and WM 408/500, special 322 565 Alarm box, WM 500 and WM 408/500, standard 1 984 111 Nut, hex, machine, #8-32 4 2 983 110 Washer, lock, E, external, #8 4 3 - - - - - - Enclosure, electrical, alarm box 1 4 - - - - - - Wire mount, cable strap, 4-way 4 5 322 534 Power supply, AC input, 24 Vdc output 1 6 939 004 Strap, cable, 0.06 in. x 1.75 in. 9 7 322 567 Wire group, alarm box, special 1 A 7 322 568 Wire group, alarm box, standard 1 B 8 984 129 Nut, hex, machine, #10-32, brass 4 9 225 451 Linear switch, DPST, 250 V, 16 A, panel-mount 1 10 322 535 Lamp, indicator, 24 Vdc, panel-mount, green 1 11 161 781 Spacer, terminal block 2 12 322 537 Terminal block accessory, jumper, 4-pole, 6.5 mm 1 13 - - - - - - Terminal block accessory, rail, din, 35 mm x 7.5 mm 1 14 - - - - - - Panel, electrical enclosure, alarm box 1 15 274 725 Connector, strain relief, PG-11 3 16 - - - - - - Tape, PE, electrical, 2.03 in. 1 17 372 077 Alarm cable for LAD with 7-pin plug 1 18 171 236 Socket, Omron, DPDT, din, touch-proof 3 19 171 235 Relay, Omron, 24 Vdc, DPDT 3 20 165 395 Jumper bar assembly, T-block, 2-pole 2 21 322 541 Switch, toggle, 2-position, SPDT 1 22 332 106 Bracket, switch, alarm box 1 23 981 069 Screw, socket, 8-32 x 0.50 in. 2 24 983 121 Washer, lock, external, #10 4 Continued on next page 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 25 Item Part Description Quantity 25 940 073 O-ring, Viton, 0.125 in. inside diameter x 0.070 in. wide 3 Note 26 986 316 Ring, retaining, external, 12, push-on 3 27 939 751 Fuse, 4.00, fast-acting, 250 Vac, 5 mm x 20 mm 2 A 27 939 768 Fuse, 2.00, fast-acting, 250 Vac, 5 mm x 20 mm 2 B 28 161 787 Block, terminal, feed-thru 15 C 29 161 778 Block, terminal, feed-thru 2 30 221 693 Holder, fuse, 5 x 20, 250 Vac, 6.3 A 2 31 304 224 Horn, with light, 24 Vdc 1 NS 221 695 Terminal block accessory, din, end cap, fuse holder 1 NS - - - - - - Plate, information 1 NS - - - - - - Rivet, pop, 1 / 8 in. x 0.125 in. 2 NS 981 729 Screw, pan, 10-32 x 0.375 in 2 NS 983 123 Washer, flat, 0.219 in x 0.5 in. x 0.49 in. 2 NS 984 120 Nut, hex, machine, #10-32 2 NS - - - - - - Marker, tag, terminal block 2 NS 322 540 Terminal block accessory, marker, plus symbols 1 NS 322 539 Terminal block accessory, marker, minus symbols 1 NS 322 538 Terminal block accessory, marker, L1, L2, L3, N, GND 4 NS 136 418 Name plate, Nordson, oval 1 NS 322 542 Threaded spacer, 6-32 thread, round, 0.50 in. long, 0.25 in. outside diameter 4 NS - - - - - - Screw, socket, 6-32 x 0.250 in. 8 NS 983 524 Washer, lock, E, external, #6 8 NOTE A: Used in alarm box part number 322 544. B: Used in alarm box part number 322 565. C: The quantity for this item for the alarm box part number 322 544 is 17. NS: Not Shown 1999 Nordson Corporation

26 Liquid Adhesive Detection System Alarm Box WM 500 and WM 408/500 Alarm Box (contd.) 3 4 5 6 7 8 1 2 9 31 10 J1 11 12 29 ++ 1 2 3 4 5 6 7 8 9 10 11 L1 L1 L2 L2 + + KA1 KA2 KA3 1 2 3 4 5 6 7 8 9 10 11 26 27 25 26 13 20 30 28 14 8 24 19 18 1 2 23 21 17 16 15 22 5710005A Fig. 7 WM 500 and WM 408/500 Alarm Box 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 27 Recommended Spare Parts Use the following parts list to stock and order spare parts and service items. Part Description Note 939 751 Fuse, 4.00 A, fast-acting, 250 Vac, 5 mm x 20 mm A 939 768 Fuse, 2.00 A, fast-acting, 250 Vac, 5 mm x 20 mm B, C 171 235 Relay, Omron, 24 Vdc, DPDT NOTE A: Used in alarm box part number 322 544. B: Used in alarm box part number 322 565. C: Used in the 24 Vdc power supply. 1999 Nordson Corporation

28 Liquid Adhesive Detection System Alarm Box 9. Wiring Diagrams This section contains the wiring diagrams for the standard alarm box (part 322 565) and the special alarm box (part 322 544). Standard Alarm Box See Figure 8. QS PIN #1 G1 J1 24VDC POWER SUPPLY + J2 PIN #3 PIN #1 PIN #4 PANEL DOOR KA1 KA2 KA3 XT 2 1 4 5 9 8 12 13 14 SCHEMATIC BOTTOM VIEW OF RELAYS KA1, KA2 AND KA3 BROWN GREEN PINK GRAY YELLOW WHITE MOMENTARY FAULT INPUT CONTINUOUS FAULT INPUT CAST OUT 1 INPUT 2 1 PILOT + LIGHT HL 2 2A 1A SCHEMATIC BOTTOM VIEW OF SWITCH QS SA STAMPED SIDE A ALARM CABLE 1 2 3 (RED WIRE) HA (BLACK WIRE) STAMPED SIDE B SCHEMATIC BOTTOM VIEW OF SWITCH SA HL 1 5710008A Fig. 8 Wiring Diagram for Standard Alarm Box 1999 Nordson Corporation

Liquid Adhesive Detection System Alarm Box 29 Special Alarm Box See Figure 9. 1 1A QS 2 2A PIN #1 G1 J1 PIN #3 24VDC POWER SUPPLY + J2 5 6 PIN #1 PIN #4 PANEL XT 1 1 4 XT 2 DOOR 5 9 8 12 13 14 SCHEMATIC BOTTOM VIEW OF RELAYS KA1, KA2 AND KA3 2 1 PILOT LIGHT 2A 1A HL 2 SCHEMATIC BOTTOM VIEW OF SWITCH QS 2 1 3 SCHEMATIC BOTTOM VIEW OF SWITCH SA + (RED WIRE) HA HL 1 1 2 17 3 (BLACK WIRE) SA BROWN GREEN PINK GRAY YELLOW WHITE STAMPED SIDE A STAMPED SIDE B MOMENTARY FAULT INPUT CONTINUOUS FAULT INPUT CAST OUT 1 INPUT ALARM CABLE 5710009A Fig. 9 Wiring Diagram for Special Alarm Box 1999 Nordson Corporation

30 Liquid Adhesive Detection System Alarm Box 1999 Nordson Corporation