Grizzly Welder H8155 User Manual

MODEL H8155  
MIG WELDER  
OWNER'S MANUAL  
COPYRIGHT © MAY, 2007 BY GRIZZLY INDUSTRIAL, INC.  
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE  
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.  
#LO9344 PRINTED IN CHINA  
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Table of Contents  
INTRODUCTION............................................................................................................................... 2  
Foreword .................................................................................................................................... 2  
Contact Info................................................................................................................................ 2  
Specifications ............................................................................................................................. 2  
SECTION 1: SAFETY....................................................................................................................... 3  
MIG Welders .............................................................................................................................. 3  
Welding Codes and Standards .................................................................................................. 5  
SECTION 2: CIRCUIT REQUIREMENTS ........................................................................................ 6  
110V Operation.......................................................................................................................... 6  
Grounding for Welding Safety.................................................................................................... 7  
SECTION 3: INVENTORY................................................................................................................ 8  
SECTION 4: OPERATIONS ............................................................................................................. 9  
Operation Safety ........................................................................................................................ 9  
Welder Duty Cycle ..................................................................................................................... 9  
Operation Guidelines ............................................................................................................... 10  
Basic Operation........................................................................................................................ 10  
Maintenance............................................................................................................................. 12  
SECTION 5: ACCESSORIES......................................................................................................... 14  
SECTION 6: SERVICE ................................................................................................................... 15  
Troubleshooting........................................................................................................................ 15  
Replacement Parts And Labels ............................................................................................... 16  
WARRANTY AND RETURNS........................................................................................................ 21  
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INTRODUCTION  
Specifications  
Foreword  
Welding Current ......................................25–75A  
Duty Cycle........................................20% @ 75A  
Duty Cycle........................................45% @ 50A  
Duty Cycle........................................92% @ 35A  
Duty Cycle......................................100% @ 25A  
Power Consumption...................20A @ 110VAC  
Wire Size............ 0.023"-0.035", 0.03" Flux Core  
Spool Size .........................................4" diameter  
Welding Capacity ...........................22 GA.–5/32"  
Net Weight.................................................55 lbs.  
We are proud to offer the Model H8155 MIG  
Welder. This machine is part of a growing Grizzly  
family of fine metalworking equipment. When  
used according to the guidelines set forth in this  
manual, you can expect years of trouble-free,  
enjoyable operation and proof of Grizzly’s com-  
mitment to customer satisfaction.  
The specifications, drawings, and photographs  
illustrated in this manual represent the Model  
H8155 when the manual was prepared. However,  
owing to Grizzly’s policy of continuous improve-  
ment, changes may be made at any time with no  
obligation on the part of Grizzly.  
For your convenience, we always keep current  
Grizzly manuals available on our website at www.  
grizzly.com. Any updates to your machine will be  
reflected in these manuals as soon as they are  
complete. Visit our site often to check for the lat-  
est updates to this manual!  
Contact Info  
If you have any comments regarding this manual,  
please write to us at the address below:  
Grizzly Industrial, Inc.  
Technical Documentation Manager  
P.O. Box 2069  
C
/
O
Bellingham, WA 98227-2069  
We stand behind our machines. If you have any  
service questions or parts requests, please call or  
write us at the location listed below.  
Grizzly Industrial, Inc.  
1203 Lycoming Mall Circle  
Muncy, PA 17756  
Phone: (570) 546-9663  
Fax: (800) 438-5901  
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Safety Instructions for  
MIG Welders  
1. READ THIS MANUAL. This manual con-  
tains proper operating and safety proce-  
dures for this equipment.  
3. WELDING IN A CONFINED SPACE CAN  
BE HAZARDOUS. Always open all covers,  
sustain forced ventilation, remove toxic and  
hazardous materials, and provide a power  
disconnect to the welder inside the work  
space. Always work with someone who  
can give you help from outside the space.  
Welding can displace oxygen. Always check  
for safe breathing atmosphere and provide  
air-supplied respirators if necessary. Keep  
in mind that all normal welding hazards are  
intensified in a confined space.  
2. WELDING FUMES. Breathing welding  
fumes can cause suffocation or poisoning  
without warning. Keep your head out of  
welding fumes. Use adequate ventilation  
at the arc to safely remove the fumes from  
your breathing zone and the general area.  
Use ANSI approved respirators for the type  
of welding operation. Protect others from  
these fumes.  
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4. ELECTRIC SHOCK. DO NOT touch live  
electrical parts. Connect welder to power  
source with approved earth ground. Make  
sure all electrical connections are tight,  
clean, and dry. Connect workpiece to  
approved earth ground. The work lead is  
NOT a ground connection and is to be used  
only to complete the working welding cir-  
cuit.  
9. HANDLING GAS CYLINDERS. Regardless  
of content, pressurized gas cylinders can  
explode. Always secure a protector cap in  
place over the outlet valve assembly when  
moving the cylinder. A broken off valve  
could release the pressurized contents and  
cause the cylinder to be hurled about at  
dangerously high speeds, causing serious  
property damage, personal injury, or death.  
Always use safe methods when moving gas  
cylinders. Always secure a gas cylinder to a  
wall or approved cylinder cart with a chain  
before using or storing.  
5. PREVENT FIRES. Welding work zones  
must be kept clear of flammable liquids,  
such as gasoline and solvents; combus-  
tible solids, such as paper and wood; and  
flammable gases, such as acetylene and  
hydrogen. Provide approved fire barriers  
and fire extinguishing equipment for the  
welding zone. Stay alert for sparks and  
spatter thrown into cracks and crevices that  
can start a smoldering fire. Inspect the work  
area again one hour after welding for any  
potential fire hazards.  
10. PROTECT GAS CYLINDERS FROM HEAT  
OR DAMAGE. An excess of heat can  
cause the pressurized gas to expand and  
explode the cylinder. Never weld on the  
gas cylinder. Damaging the outside of the  
cylinder can cause the cylinder to crack and  
explode. Exploding pressurized gas cylin-  
ders can cause serious property damage,  
personal injury, or death.  
6. PROTECT BODY FROM ARC BURNS,  
SPARKS, AND SPATTER. Wear correct  
and approved eye, ear, and body protec-  
tion. Wear complete body protection, such  
as clean and oil-free protective clothing,  
leather gloves, protective cap, heavy long-  
sleeve shirt, cuffless pants, and high leather  
boots. DO NOT wear jewelry or frayed  
clothing. Use a welding helmet with the cor-  
rect shade of filter for the operation. Protect  
other people and property in your work-  
ing zone from exposure to arc radiation,  
sparks, and spatter.  
11. ELECTRIC AND MAGNETIC FIELDS  
(EMF). Welding operations create EMF  
around the welding equipment and  
workpieces. Workers who have pacemak-  
ers must consult with their physician before  
using this equipment or being within 50 feet  
of welding operations.  
12. EQUIPMENT MAINTENANCE. Make sure  
equipment inspections and maintenance  
are performed by a qualified person as  
required. Stop the welding operation and  
disconnect the welder from power if the  
equipment is damaged or malfunctions.  
7. WORKING AREA. Keep working area clear  
of any material not involved in the welding  
operation. Keep all equipment, workpieces,  
and work surfaces clean, dry, and free of  
entanglements. Keep lead cables orga-  
nized and away from your body.  
13. EXPERIENCING DIFFICULTIES. If you  
are experiencing difficulties performing the  
intended operation, stop using the equip-  
ment. Contact our Technical Support  
Department at (570) 546-9663.  
8. AVOID EXPLOSION HAZARD. Never  
weld on closed containers or containers  
with fumes inside. Containers should be  
prepared per American Welding Society  
Publication F4.1, Section 7.  
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Additional Sources for  
Welding Codes and Standards  
American Welding Society, 550 N.W. LeJeune Road, Miami, FL 33126, (305) 443-9353, Website: www.  
aws.org.  
—Safety in welding, Cutting, and Allied Processes, ANSI Standard Z49.1  
—Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping,  
AWS F4.1  
National Fire Protection Association, P. O. Box 9101, 1 Battery March Park, Quincy, MA 02269-9101, (617)  
770-3000, Website: www.nfpa.org and www.sparky.org.  
—National Electrical Code, NFPA Standard 70  
—Standard for Fire Prevention During Welding, Cutting, and Other Hot Work, NFPA Standard 51B  
Compressed Gas Association, 1735 Jefferson Davis Highway, Suite 1004, Arlington, VA 22202-4102, (703)  
412-0900, Website: www.cganet.com.  
—Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1  
Canadian Standards Association, Standards Sales, 178 Rexdale Boulevard, Rexdale, Ontario, Canada  
M9W 1R3, (800) 463-6727, Website: www.csa-international.org.  
—Code for Safety in Welding and Cutting, CSA Standard W117.2  
American National Standards Institute (ANSI), 11 West 42nd Street, New York, NY 10036-8002, (212) 642-  
4900, Website: www.ansi.org.  
—Practice for Occupational and Educational Eye and Face Protection, ANSI Standard Z87.1  
U. S. Government Printing Office, Superintendent of Documents, P. O. Box 371954, Pittsburgh, PA 15250  
(312) 353-2220, Website: www.osha.gov.  
—OSHA, Occupational Safety and Health Standards for General Industry, Title 29, Code of Federal  
Regulations (CFR), Part 1910, Subpart Q, and Part 1929, Subpart J  
American Conference of Government Industrial Hygienists (ACGIH), 1330 Kemper Meadow Drive, Suite  
600, Cincinnati, OH 45240-1634, (513) 742-2020, Website: www.acgih.org.  
—Threshold Limit Values (Booklet)  
Like all equipment there is potential danger  
when operating this welder. Accidents are  
frequently caused by lack of familiarity or  
failure to pay attention. Use this welder with  
respect and caution to reduce the possibil-  
ity of operator injury. If normal safety pre-  
cautions are overlooked or ignored, serious  
personal injury may occur.  
No list of safety guidelines can be complete.  
Every shop environment is different. Always  
consider safety first, as it applies to your  
individual working conditions. Use this and  
other equipment with caution and respect.  
Failure to do so could result in serious per-  
sonal injury, damage to equipment, or poor  
work results.  
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SECTION 2: CIRCUIT REQUIREMENTS  
110V Operation  
Electrocution or fire could  
result if this machine is  
not grounded correctly  
or if your electrical con-  
Serious personal injury could occur if you  
figuration does not com-  
connect the machine to the power source  
ply with local and state  
before you have completed the set up pro-  
codes. Ensure compliance  
cess. DO NOT connect the machine to the  
by checking with a quali-  
power source until instructed to do so.  
fied electrician!  
Amperage Draw  
The Model H8155 welder draws the following  
amps under maximum load:  
Extension Cords  
We do not recommend the use of extension cords.  
Instead, arrange the placement of your equipment  
and the installed wiring to eliminate the need for  
extension cords.  
Draw at 110V, Single Phase ..................20 Amps  
Circuit Requirements  
If you find it absolutely necessary to use an exten-  
sion cord with your machine:  
Connect your welder to a dedicated and grounded  
circuit that is rated for the amperage given below.  
Never replace a circuit breaker on an existing cir-  
cuit with one of higher amperage without consult-  
ing a qualified electrician to ensure compliance  
with wiring codes. If you are unsure about the  
wiring codes in your area or you plan to con-  
nect your machine to a shared circuit, consult  
a qualified electrician.  
Use at least a 10 gauge cord that does not  
exceed 50 feet in length.  
The extension cord must also contain a  
ground wire and plug pin.  
A qualified electrician MUST size cords over  
50 feet long to prevent damage to the weld-  
er.  
Minimum 110V Circuit Requirement .....30 Amps  
Grounding  
In the event of an electrical short, grounding  
reduces the risk of electric shock. The grounding  
wire in the power cord must be properly connected  
to the grounding prong on the plug; likewise, the  
outlet must be properly installed and grounded.  
All electrical connections must be made in accor-  
dance with local codes and ordinances.  
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Workpiece Ground  
Grounding for  
Welding Safety  
The incoming power circuit to the welder and the  
working welding circuit are two separate circuits  
that must have separate grounds. The weld-  
ing circuit consists of the internal components  
of the welder, the welding cables, the electrode  
holder/torch assembly, the work clamp, and the  
workpiece.  
There are two or more electrical circuits involved  
in any welding operation. The practice of safely  
grounding these circuits is documented in vari-  
ous codes and standards (refer to Additional  
Sources for Welding Codes and Standards on  
Page 5).  
ANSI Welding Standards (Z49.1, 11.3.2.1) specify  
that "Grounding [of the workpiece] shall be done  
by locating the work on a grounded metal floor or  
platen, or by connection to a grounded building  
frame or other satisfactory ground."  
Welding Machine Ground  
When properly connected to a power source, the  
Model H8155 welder is grounded through the  
power cord and power grid. The internal welding  
circuit of the welder is insulated from the external  
enclosure. However, to avoid shocking hazards if  
this internal insulation fails, you must establish a  
separate earth ground for the welder's external  
enclosure. This ground will ensure that if a short  
does occur and the metal enclosure becomes  
integrated with the welding current, the current  
will safely dissipate directly through the ground  
instead of through you.  
Always ensure that the ground for the incom-  
ing power circuit to the welder and the  
ground for the working welding circuit are  
never connected. Failure to comply with this  
warning could result in death, serious per-  
sonal injury, or property damage.  
However, you must also avoid "double ground-  
ing" the workpiece. ANSI Z49.1 states that "Care  
shall be taken to avoid the flow of welding current  
through a connection intended only for safety  
grounding since the welding current may be of a  
higher magnitude than the grounding conductor  
can safely carry."  
Note: Refer to the publication NFPA 70, National  
Electric Code, Article 250, Grounding, and your  
local electrical codes for the correct method of  
establishing this ground.  
The grounding terminal for the H8155 external  
enclosure is located on the right rear of the welder  
(see Figure 2).  
Note: The work lead from the welder is some-  
times incorrectly referred to as the "ground lead."  
The work lead from the welder is NOT a ground.  
The work lead and the ground connection to the  
workpiece are separate and must NOT be con-  
nected in any way.  
MIG welders use a high frequency cur-  
rent that creates a high electro-magnetic  
field (EMF) around the welder. EMF disrupts  
electronic devices. To avoid damage, keep  
electronic devices at least 50 feet from the  
welder when it is powered on. Workers who  
have pacemakers must consult with their  
physician before using this equipment or  
being within 50 feet of welding operations.  
Figure 2. Location of external enclosure  
grounding terminal on the rear of the Model  
H8155.  
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SECTION 3: INVENTORY  
The Model H8155 was carefully packed when it left our warehouse. If you discover the machine is damaged  
or a part is missing after you have signed for delivery, please immediately call Customer Service at (570)  
546-9663 for advice.  
Save the containers and all packing materials for possible inspection by the carrier or its agent. Otherwise,  
filing a freight claim can be difficult.  
When you are completely satisfied with the condition of your shipment, inventory the contents.  
A
J
B
C
G
D
I
E
H
F
Figure 3. Model H8155 inventory.  
F. Contact Tip  
G. Welding Torch Assembly  
H. Utility Brush and Slag Hammer  
I. Work Clamp Assembly  
J. 2 lb. Spool of Flux Wire  
A. Welder's Mask Assembly  
B. Welder's Mask Handle  
C. Handle Assembly  
D. Tap Screw #8 X ¾ (4)  
E. Contact Tip Wrenchww  
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SECTION 4: OPERATIONS  
Operation Safety  
Welder Duty Cycle  
As the welder produces the desired power output  
for the welding operation, power is converted to  
heat. In order to protect the welder components  
from over-heating, each welder has an estab-  
lished duty cycle, which varies depending on the  
amperage output being used.  
Damage to your eyes and lungs could result  
from using this machine without proper  
protective gear. Always wear safety glasses,  
welder's helmet, and a respirator when oper-  
ating this welder.  
A duty cycle is the number of minutes out of 10  
minutes that the welder can safely operate at the  
current amperage output without over-heating.  
For instance, the Model H8155 has a duty cycle  
of 45% at 50A output. This means that the welder  
can operate continuously for 4.5 minutes at 50A  
output, then the arc must be stopped to allow the  
welder, using the cooling fan, to cool off for at  
least 5.5 minutes before starting the arc again.  
NOTICE  
The Model H8155 has a cooling fan and an inter-  
nal thermostat that will shut the welder down if  
the duty cycle is exceeded. This will be evident by  
the loss of welding circuit and the orange warn-  
ing light on the face of the welder will illuminate.  
When the welder has cooled sufficiently, the inter-  
nal thermostat will re-establish the welding circuit  
and the orange warning light will go out.  
If you have never used this type of machine  
or equipment before, WE STRONGLY REC-  
OMMEND that you read books, trade maga-  
zines, or get formal training before begin-  
ning any projects. Regardless of the con-  
tent in this section, Grizzly Industrial will  
not be held liable for accidents caused by  
lack of training.  
Always treat the welding components as if  
they carry live welding current, even when  
the welder reaches the duty cycle limit and  
shuts down. When the welder re-establishes  
the welding current, the electrode and work  
lead will immediately carry live welding cur-  
rent. Ignoring this warning could result in  
serious personal injury or death.  
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Operation Guidelines  
Basic Operation  
NOTICE  
A
B
C
The following instructions are not intended  
to be a complete list of welding steps. To  
become a good welder, read books on weld-  
ing, get help from experienced welders, and  
practice.  
D
Although it is beyond the scope of this manual to  
instruct how to weld, here are some general steps  
for successful welding:  
1. Read and understand this manual and ensure  
Figure 4. Model H8155 controls.  
A. On/Off Switch  
B. Min/Max Switch  
C. 1/2 power level switch  
D. Wire Feed Speed Control  
that all safety instructions are followed.  
2. Establish a safe and efficient welding envi-  
ronment and ensure that you are properly  
protected for the welding operation. Ensure  
that there is a working fire extinguisher read-  
ily available.  
3. Have an experienced welder stand by to  
assist if needed.  
4. Decide which type of weld is correct for your  
project and properly prepare the metal.  
5. Choose the correct amperage output and be  
aware of the duty cycle for this amperage.  
6. Select the correct electrode type and size for  
your welding project.  
7. Make sure the welding cables and grounds  
are secure.  
8. Stay aware of the work environment around  
you as you weld and ensure that flying sparks  
do not start a fire.  
9. Look slightly ahead of the arc. Even with  
the protection of the welder's hood, looking  
directly at the arc can damage your eyes.  
10. Listen to the sound of the weld. Each type  
of weld has its own distinct sound when it is  
progressing correctly.  
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9. Press and hold the torch trigger switch and  
stroke the area to be welded with the elec-  
trode wire to ignite the arc.  
NOTICE  
Remember to switch to positive electrode  
polarity when using gas instead of flux core  
wire. Follow the instructions on the diagram  
below the wire feed mechanism to preform  
this simple modification. Failure to follow  
this procedure can result in poor quality  
welds.  
10. Once the arc is ignited, move the torch to  
complete the weld.  
11. When the weld is complete, lift the welding  
torch handle electrode wire clearly away  
from any grounded object, remove your face  
shield, and inspect the weld  
1. Start with ON/OFF switch in the OFF position  
12. When the welder has cooled, set the ON/OFF  
switch to the OFF position and Disconnect  
the welder from power.  
and with the welder unplugged.  
2. If using non-flux core wire, connect and  
secure the Argon/CO2 gas hose to the rear of  
the welder. If using flux core wire, protective  
gas is not required.  
NOTICE  
Always keep the power ON to the welder  
after completing the welding operation to  
let the welder fan cool the welder down. To  
avoid damage to your welder, never shut  
the power OFF before the welder enclosure  
is completely cool to the touch.  
3. Attach the work clamp as close as possible  
to the workpeice, or to the metal work bench  
where the workpiece is mounted and electri-  
cally connected.  
4. Set the desired welding current for the type  
of metal being welded, using the Min/Max  
switch and the 1/2 power level switch. Figure  
5 shows the resulting current for each combi-  
nation of Min/Max and 1/2 switch positions.  
O
ut  
p
ut  
C
ur  
r
en  
t
Du  
t
y C  
y
cl  
e
Vo  
l
tage  
Max  
Output Voltage  
Mi  
n
1
2
1
2
100%  
92%  
45%  
20%  
15.2V  
15.7V  
16.5V  
17.7V  
28VDC  
28VDC  
28VDC  
28VDC  
Ma  
x
Figure 5. Operation power chart.  
5. Verify that the ON/OFF switch is in the Off  
position, then plug the welder into a dedi-  
cated, 110VAC, grounded circuit.  
6. While holding the torch, with the electrode  
clearly out of the way of any grounded  
objects, set the ON/OFF switch to the ON  
position.  
7. Momentarily press the welding torch trigger  
switch to test the wire output speed. Adjust  
the speed with the wire speed control.  
8. Orient yourself with the area to be welded,  
then hold the welder's mask up to your face.  
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Maintenance  
1. DISCONNECT THE WELDER FROM  
POWER.  
2. Periodically open the top and side panels.  
Using compressed air, blow out all dust from  
the interior.  
3. Store the unit in a clean and dry location.  
4. Periodically clean out the torch head.  
Figure 7. The open wire feed mechanism.  
Installing the wire spool  
1. DISCONNECT THE WELDER FROM  
6. Feed and guide the spool wire into the wire  
feed mechanism, and into the small tube just  
past the feed wheels (Figure 8). Continue to  
guide the wire until comes out of the control  
tip on the torch assembly.  
POWER.  
2. Lift the side panel to expose the wire spool  
axle and the wire feed mechanism.  
Note: It will help if the welding torch cable is  
straightened out as much as possible. Push  
in until the wire comes out the welding torch  
head. If it cannot be fed manually all the way  
out, it can be fed automatically when the  
welding unit is powered up.  
3. Remove the wing nut and spool nut from the  
wire spool axle and remove the wire spool.  
4. Place the new wire spool over the axle  
with the wire exiting the spool over the top.  
Replace the retaining nut and wing nut and  
adjust until snug (Figure 6).  
Figure 8. Feeding the wire.  
Figure 6. Replacing the wire spool.  
5. Open the wire feed mechanism as shown in  
Figure 7.  
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7. Close the feed mechanism over the wire and  
adjust the feed tension if necessary (Figure  
9).  
8. Close the side panel.  
Figure 10. Removing the welding torch nozzle.  
4. Remove the contact tip with the contact tip  
wrench provided and install a new tip as  
shown in by threading it into the welding torch  
and tightening until snug (Figure 11).  
Figure 9. Adjusting the feed tension.  
Installing the contact tip  
Allow the welding torch nozzle and tip to cool  
before touching either of these components.  
Welding generates a significant amount of  
heat. Failure to allow welding components to  
adequately cool can result in severe injury.  
1. DISCONNECT THE WELDER FROM  
POWER.  
Figure 11. Attaching a new contact tip.  
2. To remove the contact tip, first disconnect  
the welder from power and verify that the  
ON/OFF switch is in the OFF position.  
3. Remove the welding torch nozzle by twisting  
as you pull the nozzle off (Figure 10).  
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ACCESSORIES  
SECTION 5: ACCESSORIES  
H7786—Auto Darkening Welding Helmet  
H9748—Leather Jacket Medium (40–42)  
H9887—Leather Jacket Large (44–46)  
H9888—Leather Jacket X-Large (48–52)  
H9746—Leather Knee Pads  
Automatic UV and IR filters protect eyes from  
harmful visible and invisible light during welding.  
Switching time is less than or equal to 2 millisec-  
onds, so there's no need to flip the helmet up to  
see your work under normal light conditions. Full  
face protection features adjustable head suspen-  
sion and adjustable delay time, sensitivity and  
H9745—Leather Shoe Covers  
These leather jackets, knee pads, and shoe cov-  
ers provide full protection from welding sparks  
and spatter. Gloves not included.  
dark shade protection. Viewing area is 312" x 1 ⁄2".  
1
Includes 2 AAA batteries.  
Figure 12. Model H7786 welding helmet.  
Figure 14. Models H9748/H9746/H9745 leather  
welding protection.  
G7868—Welding Respirators  
Flame retardant outer shell is recommended for  
welding applications. Special depth filter pro-  
vides high loading capacity for metal fumes with-  
out increasing breathing resistance. Heavy-duty  
adjustable headstrap and soft, closed cell foam  
face seal offers maximum comfort, protection and  
fit. 5 pack.  
H3157—Deluxe Welding Gloves  
Top grain, leather gloves protect against welding  
hazards. Extra long to protect wrists and fore-  
arms. One size fits all.  
Figure 13. Model G7868 welding respirators.  
Figure 15. Model H3157 deluxe welding gloves.  
-14-  
H8155 MIG Welder  
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Troubleshooting  
SECTION 6: SERVICE  
Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-  
ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical  
Support at (570) 546-9663.  
Troubleshooting  
Symptom  
Possible Cause  
Possible Solution  
Welder does not 1. Plug/receptacle is at fault or wired incor- 1. Test for good contacts; correct the wiring.  
power up or the  
breaker trips.  
rectly.  
2. Wiring is open/has high resistance.  
2. Check for broken wires or disconnected/corroded  
connections, and repair/replace as necessary.  
3. Replace faulty ON/OFF switch.  
3. ON/OFF switch is at fault.  
4. Duty cycle exceeded.  
4. Allow several minutes to cool with the On/Off switch  
in the Off position, then attempt to power up the  
machine again.  
Wire does not feed 1. Insufficient wire feed spring tension  
1. Tighten the spring tension knob.  
properly.  
2. Wire guide sheath in the welding torch 2. Clean wire sheath or replace welding torch assem-  
assembly is blocked.  
bly.  
3. Wire spool axle nut is too tight.  
3. Loosen nut so the reels moves freely.  
4. Wire reel has oxidized or poorly wound 4. Replace wire wheel.  
wire.  
Reduced welding 1. Ground cable is not connected or is poorly 1. Check the ground cable for proper connection.  
power.  
connected.  
2. Internal connection loose on switches.  
2. A qualified welding technician should open the unit  
and check for loose connections.  
3. One or more rectifiers failed.  
3. A qualified welding technician should open the unit  
and check for burnt rectifiers.  
Porous or spongy 1. Little or no gas.  
welds.  
1. Check presence of gas, condition of supply line, and  
gas pressure.  
2. Clogged holes in welding torch.  
2. Clear clogged holes using compressed air.  
3. A qualified welding technician should open the unit  
and check solenoid operation and electrical connec-  
tion.  
3. Solenoid valve blocked  
4. Poor quality gas or wire.  
4. Gas must be very dry. Use a moisture filter. Use a  
different type of wire.  
Gas supply does not 1. Worn or dirty solenoid valve.  
switch off.  
1. A qualified technician should open the unit and  
dismantle the valve to clean the orifice and seating  
element.  
Pressing welding 1. Faulty welding torch trigger; disconnected 1. A qualified welding technician should open the unit  
torch trigger pro-  
duces no result.  
or broken control cables.  
and remove the torch connection plug and short  
circuit poles. Check and repair control cables.  
2. A qualified welding technician should open the unit  
and replace the overload controller.  
2. Overload controller defective.  
-15-  
H8155 MIG Welder  
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Replacement Parts And Labels  
13  
9
1
14  
15  
10  
2
4
6
3
18  
19  
20  
7
21  
12  
8
11  
5
17  
16  
REF PART #  
DESCRIPTION  
REF PART #  
DESCRIPTION  
1
PH8155001  
PH8155002  
PH8155003  
PH8155004  
PH8155005  
PH8155006  
PH8155007  
PH8155008  
PH8155009  
PH8155010  
PHTEK11  
WELDERS MASK  
MASK HANDLE  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
PH8155012  
PH8155013  
PH8155014  
PWN02  
HANDLE  
2
WIRE FEED ASSEMBLY  
3
LENSE RETAINING CLIP  
MASK LENSE  
WIRE SPOOL RETAINING NUT  
WING NUT 1/4-20  
4
5
UTILITY BRUSH AND SLAG HAMMER  
CONTROL TIP WRENCH  
CONTROL TIP  
PH8155016  
PH8155017  
PH8155018  
PLABEL-14  
PH8155020  
PLABEL-12  
WELDING TORCH ASSEMBLY  
WORK CLAMP ASSEMBLY  
MACHINE ID LABEL  
6
7
8
WELDING TORCH NOZZLE  
GAS INLET TUBE  
ELECTRICITY LABEL  
9
SHOCK WARNING LABEL  
READ MANUAL 2" X 3 5/16"  
10  
11  
HANDLE BRACKET  
TAP SCREW #8 X 3/4  
Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine  
MUST maintain the original location and readability of the labels on the machine. If any label is  
removed or becomes unreadable, REPLACE that label before using the machine again. Contact  
-16-  
H8155 MIG Welder  
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NOTES  
-17-  
H8155 MIG Welder  
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NOTES  
-18-  
H8155 MIG Welder  
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WARRANTY AND RETURNS  
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from  
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,  
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty  
and any and all warranties that may be implied by law, including any merchantability or fitness, for any par-  
ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent  
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.  
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and  
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.  
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,  
or consequential damages arising from the use of our products.  
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then  
issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the  
carton. We will not accept any item back without this number. Proof of purchase must accompany the  
merchandise.  
The manufacturers reserve the right to change specifications at any time because they constantly strive to  
achieve better quality equipment. We make every effort to ensure that our products meet high quality and  
durability standards and we hope you never need to use this warranty.  
Please feel free to write or call us if you have any questions about the machine or the manual.  
Thank you again for your business and continued support. We hope to serve you again soon.  
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