Non-RTD Hot Melt Hose Replacement

Transcription

1 Instruction Sheet P/N 7C 0 Safety WARNING: System pressurized! Relieve system hydraulic pressure before breaking any hydraulic connection or seal. Failure to relieve the system hydraulic pressure can result in the uncontrolled release of hot melt or cold adhesive, causing personal injury. CAUTION: Never heat system components with a torch or an open flame. Use an electric oven with forced air circulation or a flameless electric heat applicator. Do not heat plastic parts above 0 C (50 F). Refer to the melter-specific manual for intormation on relieving hydraulic pressure. WARNING: Molten material! Wear eye or face protection, clothing that protects exposed skin, and heat-protective gloves when servicing equipment that contains molten hot melt. Even when solidified, hot melt can still cause burns. Failure to wear appropriate personal protective equipment can result in personal injury. WARNING: Allow only personnel with appropriate training and experience to operate or service the equipment. The use of untrained or inexperienced personnel to operate or service the equipment can result in injury, including death, to themselves and others and can damage to the equipment. Intended Use Nordson hoses direct the flow of hot melt and other thermoplastic materials between a Nordson melter and a dispensing gun. Thermistors or thermostats are built into the hose for precise and consistent temperature control and safety. A closely spaced, spiral-wound heating element surrounds the hose core to provide uniform heat transfer and high-temperature aramid insulation reduces heat loss. Specifications Parameter Maximum operating temperature Maximum operating pressure Input voltage Specifications 0 C (00 F) for HM IV units 8 C (5 F) for all other units 0. MPa (,500 psi) See the hose identification plate. Part 7C 0

2 Installation Remove the Old Hose. Relieve the melter hydraulic pressure. Refer to the melter manual.. Shut down the melter and disconnect it from its power source.. Turn off any gun triggering devices or gun drivers. If applicable, turn off the gun air supply.. Disconnect the hose electrical connectors or wiring from the melter and gun. 5. Disconnect the hose swivel fittings from the melter- and gun-end hose adapter fitting. 6. Properly dispose of the hose. Exchange hoses through Nordson s Trade Plus program. Contact Nordson for information. Reconnect an Old Hose. Heat the end fittings with a heat gun to ensure that the adhesive in the swivel joints is melted before attempting to turn the nuts.. Once the hose is started onto the mating fitting, allow the heat of contact with the fitting to continue softening the adhesive in the end of the hose. Use light pressure when turning the nut to ensure that the melting continues until the nut can be fully tightened. CAUTION: Do not turn the nut on a hose with solidified adhesive inside. Damage to the hose core may result. Components may be forced apart on some hose cores by turning the fixed nut if the hose end is frozen together with solid adhesive. Connect the New Hose. Carefully uncoil the new hose to avoid kinking.. Route the new hose between the melter and the gun, see Hose Installation Guidelines.. Connect the melter-end swivel fitting to the adapter fitting on the melter. Refer to Parts and Accessories for alternate adapter fittings.. Plug the melter-end electrical connector into the appropriate melter receptacle. If required, the connector can be rotated 0 degrees, see the Hose installation guidelines illustration below. 5. Restore power to the melter and bring it and the hose up to operating temperature. 6. Run adhesive through the hose and into a drain pan to purge the hose of any foreign material. 7. Shut down the melter. 8. Connect the gun-end swivel fitting to the adapter fitting on the gun.. Plug the gun-end electrical connector into the gun, or wire the hose to the gun as described in your gun-specific product manual. 0. Restore power to the melter and any gun triggering devices or drivers. Operate the melter normally.. Re-tighten the hose fittings and check for leaks.. Insulate the exposed hose fittings. Refer to Parts and Accessories for insulating cuffs. CAUTION: Do not lay the hose on the floor while servicing. Doing so can cause heat dissipation and damage to the hose. Part 7C 0

3 Hose Installation Guidelines Secure hoses with proper brackets. Do not use clamps that restrict flow or damage hoses. X Maintain at least 7 mm (.5 in.) between hoses to maintain temperature. Failure to do so can cause adhesive to overheat, resulting in chars, burns, or fire. Use 5 or 0 fittings to connect hoses. Failure to do so can cause adhesive to overheat, resulting in chars, burns, or fire. Do not exceed 0. cm (8 in.) bend radius for 5 / 6 in. hose, 7. cm ( in.) for a 5 / 8 in. or larger hose. Failure to do so can cause adhesive to overheat, resulting in chars, burns, or fire. P/N /6 IN. P/N 7 7 5/8 IN. Properly support hoses so that flow is not restricted. Use two wrenches to install hose fittings. Part 7C 0

4 Hose Cordset Configurations Use the following hose cordset pinout configurations to disconnect and reconnect the cordset leads B Figure Unit end hose cordset pinout: FoamMelt 0A, 0A, and 0A units with automatic guns. Hose heater Gun/Hose heater Hose sensor 6 Hose sensor 7 Pressure switch 8 Pressure switch Gun heater Ground 5005B Figure Unit end hose cordset pinout: HM IV and V units with automatic guns, AD-A handguns, or H- handguns. Hose heater Gun thermostat Ground Ground 5 Hose thermostat 6 Hose heater A 5 N.C. N.U. COM CSA B B 500B Figure Hose thermostat pinout: HM IV and V units with automatic guns, AD-A handguns, or H- handguns. Plug pin number 5 Not used Hose Heater Figure 5 Unit end hose cordset pinout: HM IV and V units, automatic gun-to-automatic gun. Hose Cuff A Electrical Plug B Hose heater Hose heater Gun thermostat Gun thermostat GND Ground Ground Ground 5 Hose thermostat 6 Hose heater Part 7C 0

5 5 A A B Figure 6 Hose assembly cordset wiring details: HM IV-W units with automatic guns. 500B Conduit Wires A Hose Cordset Wires B Gun heater Hose heater Gun heater Hose heater Ground 5 Hose sensor 6 Hose sensor GND Ground Figure 8 Unit end hose cordset wiring details: HM X units with AD-H handguns. Solenoid Plug A Wires B B 5006B Pump solenoid Gun heater power Pump solenoid Gun switch power ground Ground Gun/Hose common Hose heater 5 Hose sensor 6 Hose sensor Pump solenoid power GND Ground B Figure 7 Unit end hose cordset pinout: HM IX, XI, and XII units with automatic guns and AD-A handguns. Hose heater Gun/Hose heater Hose sensor 6 Hose sensor Gun heater Ground 5006B Figure Unit end hose cordset pinout: HM VIII, X, XIV, and XVIII units with automatic guns; HM XIV and XVIII with H-A or AD-A handguns. Gun heater Gun/Hose common Hose heater 5 Hose thermostat 6 Hose thermostat GND Ground Part 7C 0

6 6 Hose Cordset Configurations (contd) B Figure 0 Unit end hose cordset and wiring details: HM X units with H-B handguns. Gun heater GND Ground Gun/Hose common Hose heater 5 Hose thermostat 6 Hose thermostat A B 500B Figure Gun end hose cordset pinout: FoamMelt 0A, 0A, and 0A units with automatic guns. Hose/Gun common Gun heater GND Gun ground A Pressure switch B Pressure switch B Figure Unit end hose cordset and wiring details: Models 500, 5505, and 550 drum melters with AD-B or AD-C handguns. Hose heater 5 Hose heater 7 Gun switch 8 Gun switch Gun heater Gun heater Ground Figure Gun end hose cordset pinout: HM IV and V units with automatic guns. Gun heater Gun thermostat GND Gun ground 5000B Part 7C 0

7 7 Figure Gun end hose cordset pinout: HM IV and V units with AD-A handguns. Gun heater Gun thermostat GND Gun ground 500B Figure 6 Gun end hose cordset pinout: HM VIII, X, and XVII units with automatic guns. Gun heater Hose/Gun common GND Ground 5008B 500B Figure 5 Gun end hose cordset pinout: HM IV and V units with H-A handguns. Gun heater Gun thermostat GND Gun ground 500B Figure 7 Gun end hose cordset pinout: HM IX, XI, and XII units with automatic guns. Gun heater Gun thermostat GND Gun ground Part 7C 0

8 8 Figure 8 Gun end hose cordset pinout: HM IX, XI, and XII units with AD-A handguns. Gun heater Gun thermostat GND Gun ground 5007B A 5005B Figure Gun end hose cordset and wiring details: HM X units with AD-H handguns. Gun Switch Plug A B Gun Heater Wires B Gun switch power Gun heater Gun switch ground Gun heater Pump solenoid GND Ground Part 7C 0

9 Hose Cordset Configurations (contd) A 500B Figure 0 Gun end hose cordset pinout: HM X units with H-B handguns; HM XIV and XVIII units with H-A handguns. Gun heater Hose/Gun common GND Gun ground 5008B Figure Gun end hose cordset and wiring details: Models 500, 5005, and 550 drum melters with AD-B or AD-C handguns. Connector A Wires B Gun switch power Gun heater Ground Gun heater Gun switch GND Ground B 500B Figure Gun end hose cordset pinout: HM XIV and XVII units with AD-A handguns. Gun heater Gun thermostat GND Gun ground Part 7C 0

10 0 Hose Schematics Hose 5 6 Heater Tape Thermistor Conduit Gun 5006 Figure Model IV-W Series II hose schematic 5005 Figure Quick disconnect automatic hose schematic Operation Depending on the melter s model, use one of the following procedures of operation: For Models 500, 5505, or 550, refer to Calibrate the Hose Temperature Controller. For all other models, the hose installation does not require the calibration procedure. Proceed with normal operation, refer to a gun manual for details. Calibrate the Hose Temperature Controller CAUTION: You must complete this procedure when replacing a hose on Model 500, 5505, or 550 units. Failure to do so will result in incorrect temperature control and possibly premature hose failure. This procedure is not required on other units.. Ensure that the melter is switched off, and input power is disconnected.. Open the electrical box door and locate the hose temperature controller on the inside of the door.. Loosen the locknut on the adjustment potentiometer. This potentiometer is located near the top of the hose temperature controller.. Use a small flat-blade screwdriver to turn the adjustment potentiometer full counterclockwise. 5. Turn the temperature control knob on the outside of the door panel fully counterclockwise. 6. With the electrical box door still open, reconnect input power to the melter. 7. Manually raise the mechanical door interlock and set the main disconnect switch to the ON position. 8. Set the temperature control knob on the outside of the door panel to the ambient temperature.. Press and hold the calibration button on the hose temperature controller. 0. Use the small flatblade screwdriver to turn the adjustment potentiometer clockwise only until the amber light on the hose temperature controller begins flashing at a slow rate.. Tighten the locknut on the adjustment potentiometer without disturbing the screw setting.. Set the temperature control knob on the outside of the door panel to the desired application temperature.. Close the electrical box and resume normal operation. Part 7C 0

11 Troubleshooting Problem Possible Cause Corrective Action Hose does not heat or under heats No input power Missing contact pin(s) or damaged electrical connector Check that the melter is on,the hose electrical connections are secure, and that the channel is set to the correct temperature. Repair the contact pin(s) or replace the hose. Failed heater or sensor Connect the hose to a known good channel. If the hose heats, the original channel is bad. If the hose does not heat, replace the hose. Little or no adhesive output (Melter OK) Clogged hose Check the hose:. Disconnect the hose from the gun.. Turn on the pump and check for full adhesive flow.. Replace the hose if there is little or no adhesive flow. Hose leaks at the connection with melter or gun Loose hose fitting Damaged O ring, hose adapter fitting, or hose swivel fitting Ensure that the melter and hose are at operating temperature, and then tighten the fitting. Replace the O-ring or adapter fitting. Refer to Parts and Accessories. Replace the hose if either hose swivel fitting is damaged. Part 7C 0

12 Replacement Parts Use this table in conjunction with Hose Cordset Configurations given earlier to locate the correct cordset pinout diagrams. Part Number Unit End Figure Number Gun End Figure Number 7 Hose, FoamMelt 0A, 0A, and 0A with Automatic Gun, ÁÁÁÁ 0 VAC,. m ( ft) 70 Hose, FoamMelt 0A, 0A, and 0A with Automatic Gun, ÁÁ 0 VAC,.8 m (6 ft) 7 Hose, FoamMelt 0A, 0A, and 0A with Automatic Gun, ÁÁÁÁ 0 VAC,. m (8 ft) 7 Hose, FoamMelt 0A, 0A, and 0A with Automatic Gun, ÁÁ 0 VAC,. m (0 ft) 7 Hose, FoamMelt 0A, 0A, and 0A with Automatic Gun, ÁÁÁÁ 0 VAC,. m (6 ft) 786 Automatic hot melt hose, w/diode, ft (0.6 m), quick disconnect, 0 VAC 7 Automatic hot melt hose, ft (0.6 m), quick disconnect, 00 VAC 788 Automatic hot melt hose, ft (. m), quick disconnect, 0 VAC 7 Automatic hot melt hose, ft (. m), quick disconnect, 00 VAC 78 Automatic hot melt hose, 6 ft (.8 m), quick disconnect, 0 VAC 75 Automatic hot melt hose, 6 ft (.8 m), quick disconnect, 00 VAC 780 Automatic hot melt hose, 8 ft (. m), quick disconnect, 0 VAC 76 Automatic hot melt hose, 8 ft (. m), quick disconnect, 00 VAC 78 Automatic hot melt hose, 0 ft (. m), quick disconnect, 0 VAC 77 Automatic hot melt hose, 0 ft (. m), quick disconnect, 00 VAC 76 Automatic hot melt hose, 6 ft (. m), quick disconnect, 0 VAC 78 Automatic hot melt hose, 6 ft (. m), quick disconnect, 00 VAC 768 Connector assembly, hose 788 Dust cover, connector 7856 Receptacle, connector 58 Socket, crimp, contact Hose, Models IV and V with Automatic Gun, 0 VAC,. m ( ft), 5 / 6 in. ID Hose, Models IV and V with Automatic Gun, 0 VAC,.8 m (6 ft), 5 / 6 in. ID Hose, Models IV and V with Automatic Gun, 0 VAC,. m (8 ft), 5 / 6 in. ID Hose, Models IV and V with Automatic Gun, 0 VAC,. m (0 ft), 5 / 6 in. ID Hose, Models IV and V with Automatic Gun, 0 VAC,. m (6 ft), 5 / 6 in. ID Hose, Models IV and V with Automatic Gun-to-Automatic Gun, 0 VAC, 0.6 m ( ft), 5 / 6 in. ID Hose Assembly, Model IV-W with Automatic Gun, 0 VAC,. m ( ft), 5 / 6 in. ID Hose Assembly, Model IV-W with Automatic Gun, 0 VAC,.8 m (6 ft), 5 / 6 in. ID Hose Assembly, Model IV-W with Automatic Gun, 0 VAC,. m (8 ft), 5 / 6 in. ID Hose Assembly, Model IV-W with Automatic Gun, 0 VAC,. m (0 ft), 5 / 6 in. ID 767 ÁÁÁ ÁÁÁÁ and ÁÁÁ N/A 756 ÁÁÁ ÁÁÁ 756 ÁÁ N/A N/A Continued... Part 7C 0

13 Part Number 78 Hose, hot melt, Series II, Model IV-W, ft (. m) 70 Hose, hot melt, Series II, Model IV-W, 6 ft (.8 m) 7 Hose, hot melt, Series II, Model IV-W, 8 ft (. m) 7 Hose, hot melt, Series II, Model IV-W, 0 ft (. m) 7 Conduit, flexible, 0.8 in. X 6.5 ft (.0 m) [quantity: ] 70 Conduit, flexible, 0.8 in. X 8.5 ft (.6 m) [quantity: ] 7 Conduit, flexible, 0.8 in. X 0.5 ft (. m) [quantity: ] 7 Conduit, flexible, 0.8 in. X.5 ft (.8 m) [quantity: ] Sleeving, insulation, 7.0 ft (. m) [quantity: ] Sleeving, insulation,.0 ft (.7 m) [quantity: ] 08 Sleeving, insulation,.0 ft (. m) [quantity: ] Sleeving, insulation,.0 ft (.0 m) [quantity: ] 705 Connector, male, / 6 8 X / NPT (quantity: ) 8007 Block adapter (quantity: ) 700 Plug, pipe, / 8 NPTF (quantity: ) 78 Conduit, flexible, 0.8 in. X.0 ft. (0.6 m) [quantity: ] 7 Connector, conduit, 5 degree (quantity: ) 078 Connector, conduit, straight (quantity: ) 006 Terminal, ring (quantity: ) 6 Terminal, pushon (quantity: ) Terminal, pushon (quantity: ) Gasket, nut (quantity: ) 6 Cuff, hose (quantity: ) 67 Retainer, hose (quantity: ) 706 Clamp, hose (quantity: ) 700 Plug, pipe, / 8 NPTF (quantity: ) 6 Terminal, pushon (quantity: ) 76 Installation kit (quantity: ) 0 O-ring, Viton, 0.8 X 0.50 in. 86 Screw, hex head, 5/ 6 8 X.50 in. (quantity: ) 850 Lockwasher, 0. in. (quantity: ) 8080 Screw, fillister head, 8 X.5 in. (quantity: ) 80 Lockwasher No. 8 (quantity: ) Hose, Models IV and V with AD-A Handgun, 0 VAC,. m (8 ft), / in. ID Hose, Models IV and V with AD-A Handgun, 0 VAC,. m (6 ft), / in. ID Hose, Models IV and V with H- Handgun, 0 VAC,. m (8 ft), / in. ID Hose, Models IV and V with H- Handgun, 0 VAC,. m (6 ft), / in. ID Hose, Models IV and V with H- Handgun, 0 VAC, 7. m ( ft), / in. ID Hose, Models VIII, X, XIV, and XVIII with Automatic Gun, 0 VAC, 0.6 m ( ft), 5 / 6 in. ID Unit End Figure Number Gun End Figure Number 760 ÁÁÁ and Á ÁÁÁÁ 76 ÁÁÁ 75 ÁÁÁ and 5 ÁÁÁÁ 75 ÁÁÁ 755 ÁÁÁ 7 ÁÁÁÁ 7 6 ÁÁÁ ÁÁ Continued... N/A N/A Part 7C 0

14 Replacement Parts (contd) Part Number Unit End Figure Number Gun End Figure Number 7 Hose, Models VIII, X, XIV, and XVIII with Automatic Gun, 0 VAC,. m ( ft), 5 / 6 in. ID 75 Hose, Models VIII, X, XIV, and XVIII with Automatic Gun, 7 6 ÁÁÁÁ 0 VAC,.8 m (6 ft), 5 / 6 in. ID 77 Hose, Models VIII, X, XIV, and XVIII with Automatic Gun, 0 VAC,. m (8 ft), 5 / 6 in. ID 860 Hose assembly, Model VII ft (0. m) 860 Hose assembly, Model VII ft (0.6 m) 8606 Hose assembly, Model VII ft (0. m) 8608 Hose assembly, Model VII ft (. m) Hose assembly, Model VII 5 ft (.5 m) 8607 Hose assembly, Model VII 6 ft (.8 m) 8606 Hose assembly, Model VII 8 ft (. m) 80 Hose assembly, Model VII 0 ft (. m) 0665 Hose assembly, w/sensor, Model VII, ft (0. m) 77 Cuff, insulation, hose-to-gun () 7 Cuff, insulation, hose-to-hose () 00 Tie, cable () 705 Connector, male, hose () Hose, Models IX, XI, and XII with Automatic Gun, 0 VAC,. m ( ft), 5 / 6 in. ID Hose, Models IX, XI, and XII with Automatic Gun, 0 VAC,.8 m (6 ft), 5 / 6 in. ID 77 ÁÁÁ 775 ÁÁÁ ÁÁ 777 Hose, Models IX, XI, and XII with Automatic Gun,, 7 0 VAC,. m (8 ft), 5 / 7 6 in. ID 778 Hose, Models IX, XI, and XII with Automatic Gun, 0 VAC,. m (0 ft), 5 / 6 in. ID 77 Hose, Models IX, XI, and XII with Automatic Gun, 0 VAC,. m (6 ft), ÁÁÁÁ 5 / 6 in. ID 78 ÁÁÁÁ Hose, Models IX, XI, and XII with AD-A Handgun, 0 VAC,. m (8 ft), 5 / 6 in. ID Hose, Models IX, XI, and XII with AD-A Handgun, 0 VAC,. m (6 ft), 5 / 6 in. ID 770 Hose, Model X with AD-H Handgun, 0 VAC,. m (8 ft), / in. ID 77 Hose, Model X with H-B Handgun, 0 VAC,. m (8 ft), / in. ID Hose, Models XIV and XVIII with H-A Handgun, ÁÁÁÁ 0 VAC,. m (8 ft), 7 0 / in. ID 776 Hose, Models XIV and XVIII with AD-A Handgun, 0 VAC,. m (8 ft), / in. ID Hose, Models XIV and XVIII with AD-A Handgun, 0 VAC,. m (6 ft), / in. ID 78 Hose, Models 500, 5505, 550 Bulk Melter with AD-B/ AD-C Handgun, 0 VAC,. m (0 ft), ÁÁÁÁ 5 / 6 in. ID 75 Hose, Models 500, 5505, 550 Bulk Melter with AD-B/ ÁÁ AD-C Handgun, 0 VAC,. m (6 ft), 5 / 6 in. ID ÁÁ Continued... N/A N/A Part 7C 0

15 5 Part Number Unit End Figure Number Gun End Figure Number 70 Hose, Models 500, 5505, 550 Bulk Melter with AD-B/ AD-C Handgun, 0 VAC, 7. m ( ft), 5 / 6 in. ID 76 Hose, Models 500, 5505, 550 Bulk Melter with AD-B/ AD-C Handgun, 0 VAC,. m (0 ft), 5 / 8 in. ID 77 Hose, Models 500, 5505, 550 Bulk Melter with AD-B/ AD-C Handgun, 0 VAC,. m (6 ft), 5 / 8 in. ID 7 Hose, Models 500, 5505, 550 Bulk Melter with AD-B/ ÁÁÁÁ AD-C Handgun, 0 VAC, 7. m ( ft), 5 / 8 in. ID 7 Hose, Models 500, 5505, 550 Bulk Melter with AD-B/ AD-C Handgun, 0 VAC,. m (0 ft), 5 / 8 in. ID Accessories The use of proper support brackets and correct installation techniques can significantly extend the life of Nordson hot melt hoses. Accessories are for 5 / 6 in. advanced-technology hoses unless otherwise noted. 5 / 6 in. Hoses Part Number Comments Mounting accessories Á 0 Á Service kit Molded corrugated tube and clips used to route and fasten Á hoses. ÁÁÁ ÁÁÁ ÁÁÁ 786 Á Spiral wire support Use to properly suspend ÁÁ hoses. For 5 / 8 and - / 8 in. hoses, use P/N 77. ÁÁ 7 Hose protector Spiral-wrap chafe guard ÁÁ prevents point contact wear. ÁÁÁ 8 Á Corrugated hose cover, 5. m ÁÁÁ (7 ft) ÁÁÁ Insulating cuffs Á 76 Á Insulated cuff, 6 mm (.5 in.) long Use to insulate joint connections between hose ÁÁÁ 765 Á Insulated cuff, 5 mm ( in.) long and gun. ÁÁÁ 7 Á Insulated cuff, mm (.75 in.) Use to insulate joint long connections between hose ÁÁ and applicator. Part 7C 0

16 6 Accessories (contd) Part Number 5 / 6 in. Hoses Pipe Thread O-ring Fitting Fitting Fittings for strain relief Á 705 ÁÁ 7657 Á Straight Comments ÁÁÁ ÁÁÁÁ Recommended: Compact hose-to-gun or ÁÁ hose-to-manifold fitting to ÁÁ minimize cold joint at gun or manifold. ÁÁ 768 Gun-to-automatic hose; ÁÁ applicator-to-automatic or ÁÁ handgun hose (could create possibly cold joint) ÁÁ Pipe plug Extra ports on gun or ÁÁ applicator ÁÁÁ 700 ÁÁ 780 Á 0 elbow ÁÁÁÁ Gun-to-automatic hose ÁÁÁ 700 ÁÁ 766 Á 0 elbow ÁÁÁÁ Applicator-to-automatic or handgun hose ÁÁ elbow Gun-to-automatic hose ÁÁ elbow Applicator-to-automatic or ÁÁ handgun hose ÁÁÁÁ 70 Á Straight ÁÁÁÁ Gun-to- ÁÁÁ 5 / 8 in. hose ÁÁ 707 Á 5 elbow ÁÁÁÁ Gun-to- 5 / 8 in. hose Non-Heated Inline Filters SAE O-ring 5 0 Straight 50 mesh mesh ÁÁÁÁ mesh / -NPT 5 0 Straight 50 mesh mesh 788 ÁÁÁÁ mesh For CE Declaration refer to melter documentation. Issued /07 Original copyright date7. Nordson and the Nordson logo are registered trademarks of Nordson Corporation. Viton is a registered trademark of DuPont Dow Elastomers. L.L.C. Part 7C 0