Instructions–Parts List 120 Volt Hot Melt Dispensing Gun 309962H EN Used for manual dispensing of non flammable hot melt sealant and adhesive materials. For professional use only. Not for use in explosive atmospheres. Model C34005 Bottom Feed Model C34007 Bottom Feed with Trigger Switch Model C50018 Top Feed 3500 psi (24.1 MPa, 241 bar) Maximum Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions.
Table of Contents Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2 309962 Parts . . . . . . . . . . . . . . . . . . . . . . . .
Symbols Warning Symbol Caution Symbol WARNING CAUTION This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions. This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions. WARNING SKIN INJECTION HAZARD Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation.
WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and result in a fire or explosion and serious injury. D Do not use this equipment in a hazardous area, as defined in Article 500 of the National Electrical Code (USA). D Ground the equipment and the object. See Ground the System on page 6. D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvent or the fluid being dispensed.
WARNING ELECTRIC SHOCK HAZARD To reduce the risk of electric shock D Keep display panels fastened during operation D Never cut or puncture a hose cover. D Disconnect power source before servicing D Install according to local electric code. D Ground all equipment. D Connect to grounded outlet. Do not expose to rain. Store indoors.
Installation Grounding the System WARNING FIRE AND EXPLOSION HAZARD To reduce the risk of a fire, explosion, and serious injury, proper electrical grounding of every part of your system is essential. Read the warning section, FIRE AND EXPLOSION HAZARD, on page 4 and follow the grounding instructions below. The following grounding instructions are minimum requirements for a basic dispensing system. Your system may include other equipment or objects which must be grounded.
Operation Relieving Pressure Gun Trigger Safety WARNING WARNING SKIN INJECTION HAZARD The system pressure must be manually relieved to prevent the system from starting or dispensing accidentally. Fluid under high pressure can be injected through the skin and cause a serious injury.
Operation Heating Up the Gun and System WARNING PRESSURE RUPTURE HAZARD Heating fluid expands, causing a rise in pressure in a closed system. D Be sure pressure is relieved before heating up the equipment. Follow the pressure Relieving Pressure Procedure on page 7. D Engage trigger retainer to hold dispense gun open to prevent excessive pressure build-up from fluid expansion 1. Be sure pump is off. 2. Engage the dispense gun trigger retainer to hold the valve open. 3. Activate the heat controls. 3.
Troubleshooting Some solutions require disassembling the gun. Always relieve system pressure and disconnect the electrical cable before performing these procedures. WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 7. See PARTS section (pages 14-17) for the parts that need to be serviced. Problem Cause(s) Solution(s) Material leaks from front of gun Seat or packing is worn Replace seat (18 or packing (20).
Service WARNING SKIN INJECTION HAZARD To reduce the risk of a serious injury, including fluid injection, D Follow the Pressure Relief Procedure on page 7 when you stop dispensing, before servicing the gun, and whenever you are instructed to relieve the pressure. D After adjusting or servicing the gun, make sure the fluid will not trigger on when the trigger safety is locked. If fluid does flow, the gun is not assembled properly or the trigger safety is damaged.
Service Schematic Diagram F C A B E GUN SWITCH D (Model C34007 only) Wiring Diagram Connector RTD Sensor B Approximately 108 ohms @ 70_F C A D Heater 100W @ 120VAC F 123 ohms minimum– 150 ohms maximum E Switch Normally Open GUN SWITCH (Model C34007 only) 6 Pin 120 Volt Shown Fig. 3 NOTE: Route switch wiring through gun handle, insulator, and body, ensuring enough slack to change over gun from top to bottom inlet without putting strain on wires. 11.
Service Inspection Frequency Adjusting the Needle Assembly Dispense Valve The trigger travel and corresponding valve opening are factory set. To adjust this setting, follow the procedure below. Inspect dispense valve at every use for leakage or other visible damage. Heater Every two weeks, check heater for proper resistance. Resistance should be approximately 123–150 ohms (+58/–29) cold for the 120 volt valves. Replace heater if necessary.
Service Adjusting the Spring Tension WARNING SKIN INJECTION HAZARD To reduce the risk of a serious injury, including fluid injection, follow the Pressure Relief Procedure on page 7 whenever you are instructed to relieve the pressure. NOTE: Items in ( ) refer to items in the PARTS list (pages 14-17). Servicing Valve Stem and Seal If fluid leaks past seal (15c), the seal or needle (15a) may be worn or damaged. To replace the seal or valve stem, follow the procedure below.
Parts Models C34005, C34007 Hot Melt Gun Model C34007 only 14 50 49 17 48 13 28 29 15c 15b 15e 15f 15d 10 16 1 15 13 15g 15m 35 14 39 Model C34005 only 34 33 4 26 15a 23 21 3 20 5 2 12 18 19 8 52 11 See Detail A 6 17 9 43 51 42 ti23571a Detail A Orient snap rings as shown. For ease of assembly, install pins and snap rings from top to bottom. Middle snap ring must be installed facing up, then rotated to position shown.
Parts Model C34005 Manual Hot Melt Gun Model C34007 Trigger Switch Hot Melt Gun Ref. No. 1 2 3 4 5 6 Part No. C34010 C32028 C32011 C31017 C31016 156849 C57733 C32368 C27051 C32004 C19208 15X116 C27036 111821 Description Qty. BODY, hot-melt, manual gun INSULATOR, hot-melt hand gun BODY, gun SHIELD, hand gun CAP FITTING, pipe 3/8 in. npt SWIVEL, 3/8 in.
Parts Models C50018 Hot Melt Gun NOTE: Assemble two 10 halves over swivel (6) after connecting fluid hose. 29 17 28 50 1 48 16 53 13 47 15g 15 47 35 15m 14 34 6 21 26 39 33 12 49 8 9 20 18 15a 2 5 3 17 19 15f 15e 15d 15c 15b 52 11 See Detail A ti23569a 4 Detail A 16 309962 Orient snap rings as shown. For ease of assembly, install pins and snap rings from top to bottom. Middle snap ring must be installed facing up, then rotated to position shown.
Parts Model C50018 Manual Hot Melt Gun Ref. No. Part No. Description Ref. No.
Technical Data Maximum Working Pressure All Models . . . . . . . . . . . . . . . . . . 3500 psi (241 bar) Outlet Port Size All Models . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4 npt(f) Inlet Port Size on Gun Housing All Models . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8 npt(f) Inlet Port Size on Fluid Swivel All Models except C50018 . . . . . . . . . . . 7/8 JIC(m) C50018 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2 npt(f) Height Wattage All Models . . . . . . . . .
Notes 309962 19
Graco Standard Warranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
