Graco Welder 25 oz C04074 User Manual

Instructions-Parts  
950 Series Sealant Gun  
309968D  
ENG  
For dispensing sealant from caulking tubes. For professional use only.  
Important Safety Instructions  
Read all warnings and instructions in this manual.  
Save these instructions.  
More warnings.  
Models  
Palm Grip Gun:  
2.5 oz. (C04074) and 6 oz (C04087)  
Pistol Grip Gun:  
2.5 oz. (C04076), 6 oz. (C04090), and 12 oz. (C04068)  
PROVEN QUALITY. LEADING TECHNOLOGY.  
 
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 symbol refers to procedure-specific  
risks. When these symbols appear in the body of this manual 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  
PRESSURIZED EQUIPMENT HAZARD  
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin  
and cause serious injury.  
• Follow the Pressure Relief Procedure when you stop spraying/dispensing and before  
cleaning, checking, or servicing equipment.  
• Tighten all fluid connections before operating the equipment.  
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.  
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 Data in all equipment manuals.  
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data  
in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete  
information about your material, request MSDS from distributor or retailer.  
• Do not leave the work area while equipment is energized or under pressure. 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.  
• 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.  
PERSONAL PROTECTIVE EQUIPMENT  
You must wear appropriate protective equipment when operating, servicing, or when in the  
operating area of the equipment to help protect you from serious injury, including eye injury,  
hearing loss, inhalation of toxic fumes, and burns. This 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.  
309968D  
3
 
   
Installation  
Operation  
Topics Covered in this Chapter  
Topics Covered in this Chapter  
Note  
Air-Powered Sealant Guns  
Read this manual thoroughly before installing  
sealant gun.  
The 950 Series, air-powered sealant guns dispense  
adhesives or sealants from 2.5, 6 or 12 ounce  
polyethylene cartridges. Each size of these  
lightweight, all metal guns, is available in two styles:  
pistol grip and palm grip.  
Inspect sealant gun for shipping damage. If  
damaged, notify the carrier immediately.  
The guns feature an interchangeable gun body and  
actuator with a fast change cartridge knob included.  
The cartridge retainers are corrosion-resistant, will fit  
all handles and are made of high strength steel to  
prevent cartridge splitting under pressure.  
Manual Applications  
The palm and pistol grip sealant guns are used in  
hand-held applications.  
1. Secure gun in a way that allows proper routing  
of air hose and fitting.  
In operation, the dispense rate is controlled through  
air pressure, trigger position and nozzle orifice. When  
the gun is actuated, air pressure forces the plunger  
down, inside the cartridge, forcing material out the  
nozzle. When the trigger is released, pressure is  
removed and dispensing stops.  
2. Make sure gun does not impede movement of  
person.  
3. Tighten hose connections before operating  
equipment. The air-powered sealant gun can be  
supplied air from any standard air pump.  
4. Do not exceed maximum working pressure of  
sealant gun.  
Manual Sealant Guns  
The manually-operated sealant fun for 2.5, 6 and 12  
ounce cartridges uses a smooth plunger rod for easy  
operation. Simply releasing the trigger, releases the  
pressure; dispensing is easy to control and stops  
quickly.  
Automatic Appliations  
The palm grip and pistol grip sealant guns are not  
designed for use in high production operations.  
Never mount or secure any hand-held gun to a fixture  
or robot arm.  
Gun Tip/Nozzle Safety  
Use extreme caution when cleaning or changing  
dispense sealant gun tips/nozzles. Always follow the  
Pressure Relief Procedure first, and then remove the  
spray tip/nozzle to clean it.  
Air Requirements  
For information describing the air pressure  
requirements, refer to the technical data supplied  
with the sealant gun..  
Never wipe off build-up around the tip/nozzle until  
pressure is relieved.  
4
309968D  
 
               
3. Open drain valve (required in your system)  
having a container ready to catch drainage.  
Pressure Relief Procedure  
4. Leave drain valve open until you are ready to  
dispense sealant again.  
Note  
This procedure describes how to relieve pressure  
for the sealant gun. To reduce the risk of serious  
injury, use this procedure whenever you shut off  
the sealant gun and before checking or adjusting  
any part of the sealant gun.  
If you suspect that the nozzle or hose is  
completely clogged, or that pressure has not  
been relieved fully after following the above  
steps, very slowly loosen the retaining nut  
or hose end coupling to relieve pressure  
gradually. Then loosen completely. Now  
clear the tip/nozzle or hose.  
1. Shut off air supply to pump. Close any bleed-type  
master air valves.  
2. Hold metal part of gun firmly to side of a grounded  
metal pail. Trigger gun to relieve pressure.  
309968D  
5
 
 
Troubleshooting  
Problem  
Cause  
Solution  
Gun fails to dispense when trigger Material lodged in nozzle  
is actuated.  
page 5 . Clear nozzle of blockage.  
Material supply, hose, passages, Check material supply settings,  
clogged  
hoses, etc. for proper material  
supply.  
Seal leakage  
Seals and packings are worn.  
Seals are worn  
Rebuild gun as necessary using  
repair kit C04094.  
Air leaks from gun inlet swivel.  
Replace seals using repair kit  
C04094.  
6
309968D  
 
 
3. Remove the trigger (107) and trigger spring (104)  
from the handle (103).  
Service  
Topics Covered in this Chapter  
Sealant Gun Reassembly (C04093)  
Note  
• Clean all parts thoroughly before  
reassembling. Check them carefully for  
damage or wear, replacing parts if needed.  
Sealant Gun Body Disassembly  
(C04093)  
• Repair Kit C04094 is available to service  
the Sealant Gun body. For best results,  
replace the original parts with new parts  
in the repair kit.  
This procedure describes how to disassemble the  
sealant gun. Refer to Parts, page 8.  
• Prior to installation, lubricate all seals and  
o-rings with PARKER-O-LUBE™ or an  
equivalent lubricant. Check the material  
supplier for a compatible lubricant.  
1. Shut off material and air supply lines to gun.  
2. Actuate gun to purge material.  
gun.  
1. Clean and free all parts of solid material residue.  
2. Reassemble gun body as follows:  
3. Disconnect air hose from sealant gun.  
4. Unhook bracket (2) from retainer (21) and  
remove from sealant gun.  
a. Install washer (5), swivel (6), two o-rings (14)  
and screw (8).  
5. Disassemble parts attached to gun body as  
follows:  
b. Install spring (9), poppet (11), o-ring (12),  
push rod (13), two o-rings (14), sleeve (15)  
and snap ring (16) inside body.  
a. Cotter pin (3)  
c. Install lever (17) and roll pin (10).  
d. Install knob assembly (1) and bracket (2).  
e. Install cotter pin (3).  
b. Knob and stud assembly (1)  
c. Roll pin (10) and lever (17)  
d. Snap ring (16) that holds the sleeve (15),  
two o-rings (14), push rod (13), o-ring (12),  
poppet (11) and spring (9) inside the body  
(4).  
3. Hook bracket (2) onto the retainer (21). Install  
parts on the gun.  
4. Reconnect air hose to sealant gun.  
e. Unscrew the swivel screw (8) and remove  
the o-rings (14), swivel (6) and washer (5).  
5. Turn on air supply to sealant gun. Check for  
leaks.  
Note  
The gun handle assembly should not be  
disassembled unless the original parts are  
worn or damaged.  
Gun Handle Assembly (C04079)  
1. Place trigger (107) and trigger spring (104) inside  
handle (103). Make sure trigger spring is aligned  
correctly with trigger.  
Gun Handle Disassembly (C04079)  
2. Insert spring pin (105) and trigger pin (106) into  
holes in handle (103) assembly.  
1. Remove the screw (101) and clamp (102) from  
the handle (103).  
2. Carefully tap the spring pin (105) and trigger pin  
(106) out of the handle assembly.  
3. Install clamp (102) and screw (101) in handle  
(103) assembly.  
309968D  
7
 
         
Pistol Grip Guns  
Parts  
Included Parts and Quantity  
Palm Grip Guns  
C04093  
Sealant  
Gun  
C04079  
Gun  
Handle  
Assembly  
Retainer  
(21x)  
Gun  
Size Part  
No.  
Included Parts and Quantity  
Gun  
Part  
No.  
See  
C04093  
Sealant Gun  
Body Assembly Table, page 9  
Retainer (21x)  
Size  
Body  
Assembly  
2.5 C04074  
oz.  
1
1
(21a) 1  
2.5 C04076  
oz.  
1
1
1
1
1
1
(21a) 1  
(21b) 1  
(21c) 1  
6
C04087  
(21b) 1  
6
oz.  
C04090  
oz.  
12 C04068  
oz.  
Model C04093 Sealant Gun Body Assembly  
Ref.  
No.  
1
2
3
4
5
6
7*  
8
Part No. Description  
Qty.  
Ref.  
No.  
Part No. Description  
Qty.  
C04085 Knob and stud assembly  
C04072 BRACKET  
C19221 Cotter pin  
1
1
1
1
1
1
2
1
1
10*+  
C20053 Roll pin  
C04096 Poppet  
C04100 O-ring  
C04098 Push rod  
1
1
1
1
2
1
1
1
11*  
12*  
13  
14*  
15  
C04101 Body  
C04103  
Washer  
C04071 Swivel  
156454  
O-ring  
155685  
O-ring  
C04097 Sleeve  
C20404 Snap ring  
C04086 Lever  
16*  
17  
C04065 Swivel screw  
C04099 Spring  
9*  
* This part is included in Repair Kit C04094, which  
may be purchased separately.  
Model C04079 Gun Handle Assembly  
Ref.  
No.  
101  
102  
103  
104  
Part No. Description  
Qty.  
Ref.  
No.  
105  
106  
107  
Part No. Description  
Qty.  
C19271 Screw  
C04082 Clamp  
C04080 Handle  
C04083 Trigger spring  
1
1
1
1
C20065 Spring pin  
C20064 Trigger pin  
C04081 Trigger  
1
1
1
8
309968D  
 
 
Retainers  
Ref.  
No.  
Description  
Part No.  
21a  
C04077  
2–1/2 oz. retainer  
(zinc plated)  
21b  
21c  
C04091  
C04069  
6 oz. retainer (zinc plated)  
12 oz. retainer (zinc  
plated  
309968D  
9
 
 
Technical Data  
Accessories  
Brand  
Category  
Data  
Part No.  
C04038  
Inlet  
Connector  
Maximum working pressure  
100 psi (7  
Hansen  
0.125 ID x  
5 ft air hose  
with male Q.D.  
inlet  
MPa, 0.7 bar)  
Outlet port size  
Wetted parts  
Weight:  
1/4 npt(f)  
Polyethylene  
C04026  
0.125 ID x  
10 ft air hose  
with male Q.D.  
inlet  
Model C04068  
1.52 lb (0.69  
Kg) with tube  
1 lb. (0.45 Kg)  
without tube  
Model C04076  
Model C04090  
1.07 lb. (0.48  
Kg)  
1.25 lb. (0.57  
Kg)  
10  
309968D  
 
   
Notes  
309968D  
11  
 
 
Graco Standard Warranty  
Graco warrants all equipment referenced in this document which is 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. This warranty applies only when the equipment is installed, operated and  
maintained in accordance with Graco’s written recommendations.  
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction,  
damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper  
maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall  
Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment  
with structures, accessories, equipment or materials not supplied by Graco, or the improper design,  
manufacture, installation, operation or maintenance of structures, accessories, equipment or materials  
not supplied by Graco.  
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an  
authorized Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco  
will repair or replace free of charge any defective parts. The equipment will be returned to the original  
purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material  
or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of  
parts, labor, and transportation.  
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR  
IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY  
OF FITNESS FOR A PARTICULAR PURPOSE.  
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above.  
The buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages  
for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall  
be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.  
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IN CONNECTION WITH  
ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED BY  
GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.),  
are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable  
assistance in making any claim for breach of these warranties.  
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from  
Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other  
goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or  
otherwise.  
FOR GRACO CANADA CUSTOMERS  
The Parties acknowledge that they have required that the present document, as well as all documents,  
notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or  
indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du  
présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés,  
donnés ou intentés, à la suite de ou en rapport, directement ou indirectement, avec les procédures  
concernées.  
Graco Information  
To place an order, contact your Graco Distributor or call to identify the nearest distributor.  
Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505  
All written and visual data contained in this document reflects the latest product information available at the time of publication.  
Graco reserves the right to make changes at any time without notice.  
Original Instructions. This manual contains English. MM 309968  
Graco Headquarters: Minneapolis  
International Offices: Belgium, China, Japan, Korea  
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441  
Copyright 2003, Graco Inc. is registered to ISO 9001; Revised 05/2011  
 
 

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