Grizzly G0881 User manual

MODEL G0881
200A MMA WELDER
OWNER'S MANUAL
(For models manufactured since 03/19)
4009939

This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.
Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.
The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and compre-
hension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.
The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.
Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement and other masonry products.
• Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equip-
ment, such as those dust masks that are specially designed to filter
out microscopic particles.

MODEL G0881
200A MMA WELDER
Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]
Product Dimensions:
Weight ............................................................................................................................................................................. 18 lbs.
Width (side-to-side) x Depth (front-to-back) x Height ............................................................................ 6-1/2 x 17 x 11-1/2 in.
Shipping Dimensions:
Type ...........................................................................................................................................................................Cardboard
Content .......................................................................................................................................................................... Machine
Weight .............................................................................................................................................................................. 25 lbs.
Length x Width x Height .....................................................................................................................................19 x 11 x 14 in.
Must Ship Upright .................................................................................................................................................................Yes
Electrical:
Power Requirement .......................................................................................................... 120V or 230V, Single-Phase, 60 Hz
Minimum Circuit Size ..................................................................................................................... 50A for 230V, 20A for 120V
Output Current Range (120V) .....................................................................................................................................30 - 105A
Output Current Range (230V) .....................................................................................................................................30 - 180A
Duty Cycle (120V) ................................................................................................................................................. 60% @ 105A
Duty Cycle (230V) ................................................................................................................................................. 30% @ 180A
Power Cord Length ...............................................................................................................................................................6 ft.
Power Cord Gauge ....................................................................................................................................................... 12 AWG
Included Plug Type (230V) ..................................................................................................................................................6-50
Included Plug Adapter (120V) ..............................................................................................................................................5-15
Switch Type ......................................................................................................................................................ON/OFF Rocker
Operation Information:
Maximum Material Thickness ...........................................................................................................................................3/8 in.
Ground Cable Length ............................................................................................................................................................5 ft.
Electrode Cable Length ................................................................................................................................................. 6-1/2 ft.
Electrode Diameter Range ................................................................................................................................... 1/16 - 5/32 in.
Other Specifications:
Country of Origin ............................................................................................................................................................... China
Warranty ........................................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ...................................................................................................................... 15 Minutes
Serial Number Location ...............................................................................................................................Machine ID Label
Housing Protection Class .................................................................................................................................................... IP21
ISO 9001 Factory ..................................................................................................................................................................Yes
Certified by a Nationally Recognized Testing Laboratory (NRTL) ........................................................................................Yes
Features:
High Welding Quality with Deep Penetration
Compatible with Rutile and Basic Electrodes
Lightweight, Compact, and Portable
Accessories:
Face Shield and Brush/Chipping Hammer
Plug Adapter for 120V

ELECTRICAL EQUIPMENT INJURY RISKS.
You can be shocked, burned, or killed by touching
live electrical components or improperly grounded
machinery. To reduce this risk, only allow qualified
service personnel to do electrical installation or
repair work, and always disconnect power before
accessing or exposing electrical equipment.
DISCONNECT POWER FIRST.
Always discon-
nect machine from power supply BEFORE mak-
ing adjustments, changing tooling, or servicing
machine. This prevents an injury risk from unin-
tended startup or contact with live electrical com-
ponents.
EYE PROTECTION. Always wear ANSI-approved
safety glasses or a face shield when operating or
observing machinery to reduce the risk of eye
injury or blindness from flying particles. Everyday
eyeglasses are NOT approved safety glasses.
OWNER’S MANUAL. Read and understand this
owner’s manual BEFORE using machine.
TRAINED OPERATORS ONLY. Untrained oper-
ators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, dis-
connect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make your workshop kid proof!
DANGEROUS ENVIRONMENTS. Do not use
machinery in areas that are wet, cluttered, or have
poor lighting. Operating machinery in these areas
greatly increases the risk of accidents and injury.
MENTAL ALERTNESS REQUIRED. Full mental
alertness is required for safe operation of machin-
ery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
For Your Own Safety, Read Instruction
Manual Before Operating This Machine
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words intended to convey the level of impor-
tance of the safety messages. The progression of symbols is described below. Remember that
safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures. Always use common sense and good judgment.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Alerts the user to useful information about proper operation of the
machine to avoid machine damage.
NOTICE
Safety Instructions for Machinery
SAFETY

WEARING PROPER APPAREL. Do not wear
clothing, apparel or jewelry that can become
entangled in moving parts. Always tie back or
cover long hair. Wear non-slip footwear to reduce
risk of slipping and losing control or accidentally
contacting cutting tool or moving parts.
HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece mate-
rial. Always wear a NIOSH-approved respirator to
reduce your risk.
HEARING PROTECTION. Always wear hear-
ing protection when operating or observing loud
machinery. Extended exposure to this noise
without hearing protection can cause permanent
hearing loss.
REMOVE ADJUSTING TOOLS. Tools left on
machinery can become dangerous projectiles
upon startup. Never leave chuck keys, wrenches,
or any other tools on machine. Always verify
removal before starting!
USE CORRECT TOOL FOR THE JOB. Only use
this tool for its intended purpose—do not force
it or an attachment to do a job for which it was
not designed. Never make unapproved modifica-
tions—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!
AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.
CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.
GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.
FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.
NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.
STABLE MACHINE. Unexpected movement dur-
ing operation greatly increases risk of injury or
loss of control. Before starting, verify machine is
stable and mobile base (if used) is locked.
USE RECOMMENDED ACCESSORIES. Consult
this owner’s manual or the manufacturer for rec-
ommended accessories. Using improper acces-
sories will increase the risk of serious injury.
UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.
MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.
DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!
MAINTAIN POWER CORDS. When disconnect-
ing cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
may damage the wires inside. Do not handle
cord/plug with wet hands. Avoid cord damage by
keeping it away from heated surfaces, high traffic
areas, harsh chemicals, and wet/damp locations.
EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intend-
ed operation, stop using the machine! Contact our
Technical Support at [phone].

Safety Caution!
On the process of welding or cutting, there will be any possibility of injury,
so please take protection into consideration during operation. More details
please review the Operator Safety Guide, which complies with the preventive
requirements of the manufacturer.
Electric shock--may lead to death!!
·Set the ground fitting according to applying standard.
·It is forbidden to touch the electric parts and electrode when the skin is naked,
wearing wet gloves or clothes.
·Make sure you are insulated from the ground and the workshop.
·Make sure you are in safe position.
Gas -- may be harmful to health!
·Keep your head out of the gas.
·When arc welding, air extractor should be used to prevent from breathing gas.
Arc radiation -- Harmful to your eye and burn your skin.
·Use suitable helmet and light filter, wear protective garment to protect eye and
body.
·Use suitable helmet for curtain to protect looker-on.
Fire
·Welding spark may cause fire, make sure the welding area no tinder around.
Noise – extreme noise harmful to ear.
· Use ear protector or others means to protect ear.
· Warn that noise harmful to hearing if looker-on around.
Malfunction -- When trouble, count on the professionals
· If trouble in installation and operation, please follow this manual instruction to
check up.
·If fail to fully understand the manual, or fail to solve the problem with the
instruction, you should contact the suppliers or our service center for professional
help.

can apply to electrode of different specifications and materials, including acidity,
alkalescence, and fiber. It can apply to in high altitude, the open air and inside and
outside decoration. Compared with the same products of home and abroad, it is
compact in volume light in weight, easy to install and operate.
Thanks for purchasing the product and hope for your precious advice. We will
dedicate to produce the best products and offer the best service.
CAUTION!
The machine is mainly used in industry. It will produce radio wave, so
the worker should make fully preparation for protection.
About the machine
The welding machine is a rectifier adopting the most advanced inverter technology.
The development of inverter gas-shielded welding equipment profits from the
development of the inverter power supply theory and components. Inverter
gas-shielded welding power source utilizes high-power component MOSFET to
transfer 50/60HZ frequency up to 100KHZ, then reduce the voltage and commutate,
and output high-power voltage via PWM technology. Because of the great reduce of
the main transformer's weight and volume; the efficiency increases by 30%. The
appearance of inverter welding equipment is considered to be a revolution for
welding industry.
The welding power source can offer a stronger, more concentrated and more stable arc.
When stick and work piece get short, its response will be quicker. It means that it is
easier to design into welding machine with different dynamic characteristics, and it
even can be adjusted for specialty to make arc softer or harder.
The MMA welding machine has the following characteristics: effective, power
saving, compact, stable arc, good welding pool, high no-load voltage, good capacity
of force compensation and multi-use.
It can weld stainless steel, alloy steel, carbon steel, copper and other color metal. It

INSTALLMENT
The induction power is equipment with power voltage compensation equipment.
When power voltage moves between ±15% of rated voltage, it still can work
normally.
When use long cable, in order to prevent voltage form going down, bigger section
cable is suggested. If cable is too long, it may affect the performance of the power
system. So we suggest you to use configured length.
1. Make sure intake of the machine not blocked or covered, lest cooling system
could not work,
2. Use inducting cable whose section is not less than 6mm2 to connect the housing
to the ground. The way is from the ground -connecting screw at the back to the earth
device.
3. Correctly connect the arc torch or holder according to the sketch. Make sure the
cable, holder and fastening plug have been connected with the ground. Put the
fastening plug into the fastening socket at the "-" polarity and fasten it clockwise.
4. Put the fastening plug of the cable to fastening socket of "+" polarity at the
front panel, fasten it clockwise, and the earth clamp at the other terminal clamps the
work piece.
5. Please pay attention to the connecting ways:
DC welding machine has two connecting ways:
positive connection and negative connection.
positive connection: holder connects with "-"
polarity, while work piece with the "+" polarity.
Negative connection: work piece with the
"-" polarity, holder with the "+" polarity.
Choose suitable way according to working
demands. If unsuitable choice, it will cause
unstable arc, more spatters and conglutination.
If such problems occur, please change the

polarity of the fastening plug.
6. According to input voltage grade, connect
Site resistance • Toxic gases are given off during the MIG welding process. Always
use in a well-ventilated area.
If distance of work piece and machine is too far (500-l00m), and the
cables (torch cable and ground cable) are too long, please choose cable
of bigger section to minimize the reduction of the voltage.
OPERATION
1. Open the power switch, screen will show set current volume and ventilator is
beginning to revolve.
2. Adjust knobs of welding current and arc-striking push, make welding function
complies with demands.
3. Generally, welding current is adequate to welding electrode according with as
following:
Specification Φ2.5 Φ3.2 Φ4.0 Φ5.0
Current 70-100A l10-140A 170-220A 230-280A
4. Knob of arc-striking drive is use to adjust welding function, specially in low
current arrange, that is cooperated with knob of welding current adjustment, they may
adjust current of arc striking and be out of control of knob of welding current
adjustment. So machine can grain powerful energy and push current can achieve
effect that may.
5. If welding machine has been coordinated remote control device:
1) Make sure the switch position of remote control device before operation. If
switch is on "OFF" Position that is out of remote control. Switch is on "ON" position
that is using remote control device.

2) Insert plug of remote control in socket of remote control correctly and tighten
firmly in order to prevent poor contact.
3) If remote control device is not be used, make sure the switch is on "OFF"
position, or welding current will not be adjusted on panel.
Warning!
Before connecting operation please make sure all the power is turned
off. The right order is to
connect the welding cable and ground cable
to the machine first, and make sure they are firmly
connected and
then put the power plug to the power source.
PANEL INSTRUCTION
The panel picture above is for reference only. If any difference with the real
machine, please follow with the real machine.

NOTES OR PREVENTIVE MEASURES
I. Environment
1) The machine can perform in environment where conditions are dry with a
dampness lever of max 90%.
2) Ambient temperature is between 10 to 40 degrees centigrade.
3) Avoid welding in sunshine or drippings.
4) Do not use the machine in environment where condition is polluted with
conductive dust on the air or corrosiveness gas on the air.
5) Avoid gas welding in the environment of strong airflow.
II. Safety norms
The welding machine has installed protection circuit of over voltage and current
and heat. When voltage and output current and temperature of machine are exceeding
the rate standard, welding machine will stop working automatically. Because that will
be damage to welding machine, user must pay attention as following:
1) The working area is adequately ventilated!
The welding machine is powerful machine, when it is being operated, it
generated by high currents, and natural wind will not satisfy machine cool demands.
So there is a fan in inter-machine to cool down machine .Make sure the intake is not
in block or covered, it is 0.3 meter from welding machine to objects of environment.
User should make sure the working area is adequately ventilated. It is important for
the performance and the longevity of the machine.
2) Do not over load!
The operator should remember to watch the max duty current (Response to the
selected duty cycle). Keep welding current is not exceed max duty cycle current.
Over-load current will damage and burn up machine.
3) No over voltage!
Power voltage can be found in diagram of main technical data. Automatic
compensation circuit of voltage will assure that welding current keep in allowable
arrangement. If power voltage is exceeding allowance arrangement limited, it is
damaged to components of machine. The operator should understand the situation and
take preventive measures.
4) There is a grounding screw behind welding machine, there is grounding marker on
it. Mantle must be grounded reliable with cable which section is over 6 square
millimeter in order to prevent from static electricity and leaking.
5) If welding time is exceeded duty cycle limited, welding machine will stop working
for protection. Because machine is overheated, temperature control switch is on "ON"
position and the indicator light is red. In this situation, you don' t have to pull the plug,
in order to let the fan cool the machine. When the indicator light is off, and the
temperature goes down to the standard range, it can weld again.

QUESTIONS TO BE RUN INTO DURING WELDING
Fittings, welding materials, environment factor, supply powers maybe have something
to do with welding. User must try to improve welding environment.
A. Arc-striking is difficult and easy to pause
1. Make sure quality of tungsten electrode is high.
2. If the electrode is not dried, it will cause unstable arc, welding defect increases and
the quality is down.
3. If use extra-long cable, the output voltage will decrease, so please shorten the cable.
B. Output current not to rated value:
When power voltage departs from the rated value, it will make the output current not
matched with rated value; when voltage is lower than rated value, the max output may
lower than rated value.
C. Current is not stabilizing when machine is been operating:
It has something with factors as following:
1. Electric wire net voltage has been changed.
2. There is harmful interference from electric wire net or other equipment.
D. Too much spatter when welding:t
1. Maybe current is too big and stick's diameter is too small.
2. Output terminal polarity connection is wrong, it should apply the opposite polarity
at the normal techniques, which means that the stick should be connected with the
negative polarity of power source, and work piece should be connected with the
positive polarity. So please change the polarity.
MAINTENANCE
1. Remove dust by dry and clean compressed air regularly, if welding machine is
operating in environment where is polluted with smokes and pollution air, the
machine need remove dust everyday.
2. Pressure of compressed air must be inside the reasonable arrangement in order to
prevent damaging to small components of inter-machine.
3. Check inter circuit of welding machine regularly and make sure the cable
Circuit is connected correctly and connectors are connected tightly (especially insert
connector and components). If scale and loose are found, please give a good polish to
them, then connect them again tightly.
4. Avoid water and steam enter into inter-machine, if them enter into machine,
please dry inter-machine then check insulation of machine.
5. If welding machine will not be operated long time, it must be put into packing
box and store in dry environment.

CHECK FAULT
Notes: If user wants to operate machine as following, the operator must
be a personnel in a specific field of electricity and safety and hold the
relevant certificate that proves their ability and knowledge. Before
maintenance, contact with our company for authorization is suggested.
1. Troubleshooting
Problem Solutions
Indicator of
power
switch is
not lit, fan
is not
working and
t
here is not
welding
output.
A. Make sure power switch is close.
B. Make sure electrify wire net (which is connected to input cable)
is in work.
C. Heat
-sense resistance(4 pieces) is broken.(24V relay has problem)
D. Power source board (Bottom board has
problem, no DC537V output
voltage);
a) Silicon bridge circuit is broken, cable is loosen.
b) Part of board is burnt.
c) Check cable between air switch and the power source board, power
board between MOS board.
E. Subsidiary power sourc
e on the control board has problem. (Contact
distributor or manufacturer.)
Fan is working
and
abnormal
indicator
is lit,
but there is no
welding output.
A. Check if components are poor connects.
B. Check if connector of output terminal is
break circuit and poor connect.
C. Maybe inverter circuit is in fault;
please pull up the power plug of main transformer (near VH-
07 fan),
which is on MOS board, then open the machine again.
(1) If abnormal indicator is still lit, some of MOS bo
ard is damaged,
check and replace it.
(2) If abnormal indicator is not lit:
a. Maybe transformer of middle board is damaged, measure
primary indutance volume and Q volume of main transformer
by inductance bridge.
Primary volume is parallel circuit, L=l.2-2.0Mh, Q>40
If inductance volume and Q volume is low, replace it.
b. Maybe some of secondary rectifier tube of transformer is broken,
check and replace rectifier tube.
D. Maybe f
eedback circuit is in fault.

Problem Solutions
Indicator of power
switch is
not lit,
fan is not
working
and
there is not
welding output.
A. Make sure power switch
es close.
B. Make sure electrify wire net (which is connected to input ca
ble) is in
work.
Power indicator
is lit, fan does
not work and
there is no
welding
output.
A. Maybe be connected wrong to 380v power cause machine is in
p
rotection circuit, connect to 220v power and operate machine again.
B. 220v power is not stabilizing (input cable is too slender) or input cable is
connected to electrify wire net cause machine is in protection circuit.
Increase the section of input cable and tighten input connector firmly.
Close
machine 5
-10 minutes then open it again.
C. Open
and close power switch in short time cause protection circuit is
working. Close machine and open it again afterS
-10 minutes.
D. Cables are relaxed between power switch and power source board,
tighten them again.
Fan is working,
welding current
is not s
tabilixing
or out of
potential
control, current
is
sometimes
low
and
sometimes
high.
A. Quality of 1K potential is bad, replace it.
B. Terminal of output is broken circuit or poor connect.
Fan is working,
and abnormal
indicator is not
lit, ther
e is no
welding output.
A. Check if components are poor connects.
B. Check if connector of output terminal is break circuit and poor connect.
C. Check voltage between power source board and MOS board (VH
-07)
is
about DC 380v.
D. If green indicator is
not lit in assistant power of MOS board, please
connect with seller or out company and replace it.
E. If there is some question in control circuit,
please connect with seller or
our company and replace it.
Fan is working,
and abnormal
indicator i
s lit,
but there is no
welding output.
A. Maybe over-current protection is working, please close machine and
waiting. After abnormal indicator is not on, open machine.
B. Maybe overheated protection is working,
wait for 2-3 minutes.
C. Maybe inverter circuit is in fault; please pull up the power plug of main
transformer(near VH-
07 fan), which is on MOS board, then open the
machine again.
(1) If abnormal indicator is still lit, some of MOS board is damaged,
check and replace it.
(2) If abnormal indicator is not lit:
i. Maybe transformer of middle board is damaged, measure
primary inductance volume and Q volume of main
transformer by inductance bridge.
ii. Primary volume is parallel circuit, L=l.2-2.0Mh, Q~ 40
If inductance volume and Q volume is low, replace it.
iii. Maybe some of secondary rectifier tube of transformer is
broken, check and replace rectifier tube.
D. Maybe feedba
ck circuit is in fault.

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.
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.
In the event you need to use 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.
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.
To
take advantage of this warranty, you must register it at https://www.grizzly.com/secureforms/
warranty-card
, or you can scan the QR code below to be automatically directed to our warranty
registration page
. Enter all applicable information for the product.
WARRANTY
WARRANTY & RETURNS