Graco 249514 Guide

311209W
EN
Operations and Parts
Hot Melt
Dispense Guns
For use with Graco Therm-O-Flow® and Warm Melt Supply Systems for dispensing
non-flammable hot melt thermoplastic sealants and adhesives. For professional use only.
Not approved for use in explosive atmospheres or hazardous (classified) locations.
Maximum Working Pressure 5000 psi (34.5 MPa, 345 bar)
See page 2 for model information.
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
Bottom feed model Top feed model

2 311209W
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connect Heated Hose . . . . . . . . . . . . . . . . . . . . . 6
Connect Electrical Cable . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pressure Relief Procedure. . . . . . . . . . . . . . . . . . . . 8
Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Heat Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Dispensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Adjusting Dispensing Gun . . . . . . . . . . . . . . . . . 11
Install New Heater Cartridge, RTD Sensor, or
Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Inspection Frequency. . . . . . . . . . . . . . . . . . . . . 13
Adjust Needle Assembly . . . . . . . . . . . . . . . . . . 13
Service Valve Stem and Seal . . . . . . . . . . . . . . . 13
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Models 249514, 249512, 25R585 and 25R586, Hot
Melt Guns. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Models 249515 and 249513, Hot Melt Guns . . . 16
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Rebuild Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Technical Specifications . . . . . . . . . . . . . . . . . . . . 19
California Proposition 65 . . . . . . . . . . . . . . . . . . . . 19
Graco Standard Warranty. . . . . . . . . . . . . . . . . . . . 20
Models
Related Manuals
Part Description
249514, 25R586 Bottom Feed
249512, 25R585 Bottom Feed with Trigger Switch
249515 Top Feed
249513 Top Feed with Trigger Switch
Manual in
English Description Manual Reference
334129 Therm-O-Flow® 20, Instructions - Parts Supply System
334130 Therm-O-Flow 200, Instructions - Parts Supply System
313296 Warm Melt Supply Systems, Instructions - Parts Supply System
311513 4-Zone Heat Control, Instructions - Parts List Temperature Control
3A4241 Hot Melt/Warm Melt Heated Hose, Instructions Heated Fluid Hose
309160 Hot Melt/Warm Melt Heated Hose, Instructions Heated Fluid Hose

Warnings
311209W 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
WARNING
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can cause
electric shock.
•Turn off and disconnect power at main switch before disconnecting any cables and before servicing
or installing equipment.
•Connect only to grounded power source.
•All electrical wiring must be done by a qualified electrician and comply with all local codes and
regulations.
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation. To avoid severe
burns:
•Do not touch hot fluid or equipment.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
•Protective eyewear, and hearing protection.
•Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.

Warnings
4 311209W
SKIN INJECTION HAZARD
High-pressure fluid from dispensing device, hose leaks, or ruptured components will pierce skin. This
may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
•Engage trigger lock when not dispensing.
•Do not point dispensing device at anyone or at any part of the body.
•Do not put your hand over the fluid outlet.
•Do not stop or deflect leaks with your hand, body, glove, or rag.
•Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or
servicing equipment.
•Tighten all fluid connections before operating the equipment.
•Check hoses and couplings daily. Replace worn or damaged parts immediately.
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or solvent
flowing through the equipment can cause static sparking. To help prevent fire and explosion:
•Use equipment only in well-ventilated area.
•Eliminate all ignition sources, such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static sparking).
•Ground all equipment in the work area. See Grounding instructions.
•Never spray or flush solvent at high pressure.
•Keep work area free of debris, including solvent, rags and gasoline.
•Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
•Use only grounded hoses.
•Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment until
you identify and correct the problem.
•Keep a working fire extinguisher in the work area.
WARNING

Warnings
311209W 5
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
•Do not operate the unit when fatigued or under the influence of drugs or alcohol.
•Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Specifications in all equipment manuals.
•Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For
complete information about your material, request Safety Data Sheets (SDSs) from distributor or
retailer.
•Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
•Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
•Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
•Make sure all equipment is rated and approved for the environment in which you are using it.
•Use equipment only for its intended purpose. Call your distributor for information.
•Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
•Do not kink or over bend hoses or use hoses to pull equipment.
•Keep children and animals away from work area.
•Comply with all applicable safety regulations.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
•Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using.
•Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
WARNING