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Operating Instructions and Parts Manual

GROUNDING

1.  Use the ground terminal and wing 

nut on the welder / generator frame 
to connect the unit to a suitable 
ground source. Securely fasten the 
end terminal of the ground wire to 
the ground terminal on the 
welder / generators frame. Tighten 
the washer and wing nut on top of 
the ground wire end terminal.

2.  The ground wire should be made 

of #8 gauge wire. Do not use wire 
with a higher gauge number. 
Higher gauge numbers indicate 
thinner wire, which may not 
provide an adequate ground path.

3.  The other end of the ground wire 

must be securely fastened to an 
approved ground source.

The following are ground sources 
approved by the National Electric 
Code. Other ground sources may be 
acceptable. Refer to the National 
Electric Code and local regulations for 
further ground source information. If 
not sure of regulations or procedures, 
obtain assistance from a qualified 
(licensed or certified) electrical 
technician.

a.  An underground water pipe at 

least ten feet in length

b. A non-corrosive underground 

pipe at least eight feet in length 
and 3/4 inch diameter

c.  A steel or iron underground rod 

at least eight feet in length and 
5/8 inch diameter

d. A non-ferrous rod at least 

eight feet in length, 1/2 inch 
in diameter, and approved for 
grounding purposes

Any rod or pipe used for grounding 
must be driven to eight feet deep or 
buried in the deepest possible trench.

STARTING

1.  Remove all electrical loads from the 

welder / generators.

2.  Move fuel shut-off lever as far as 

possible to the right to enable fuel 
flow.

3.  Rotate the engine switch to the ON 

position.

4.  Adjust the choke lever as follows:

a.  For cold engine, move the choke 

lever as far as possible to the left, 
choke fully ON, position.

b. For warm / hot engine, move the 

choke lever midway between the 
choke and run positions.

5.  Pull the starter rope with a brisk, 

smooth motion.

NOTE:

 Some models may be 

equipped with an electric starter. 
For models equipped with an 
electric starter, turn the key.

6.  After each start up, allow the 

engine to run for 2-3 minutes with 
no load.

7.  As the engine warms up and 

stabilizes, adjust the choke lever 
to the right, until the lever is 
positioned as far as possible to the 
right.

 

Engine speed is 

  preset to provide 

proper output voltage. Never attempt 
to modify or adjust engine speed or 
output voltage.

ENGINE BREAK-IN

After initial start-up, the engine 
should be broken in according to the 
manufacturer's instructions. Refer to the 
engine manual for the proper break-in 
procedure.

SHUT-OFF

1.  Shut off and remove all electrical 

load devices from the welder / 
generator.

2.  Allow the engine to run for 2-3 

minutes with no electrical loads.

3.  Rotate the engine switch to the OFF 

position.

4.  Verify that the welder / generator 

has completely stopped.

5.  Close the fuel supply valve.

6.  Allow the unit to cool before 

installing any covers.

Pre-Operation

LOCATION

Selecting the proper location can 
significantly increase performance, 
reliability and life of the arc welder.

 •  For best results locate the welder / 

generator in an environment that is 
clean and dry. Dust and dirt in the 
unit retain moisture and increase 
wear of moving parts.

 •  Store electrodes in a clean, dry 

location with low humidity to 
preserve the flux coating.

INSTRUCTIONS

1.  Check engine oil level. Oil is NOT 

mixed with the gasoline, however 
adequate oil supply is necessary for 
proper engine lubrication. Refer to 
the Engine Manual for SAE, API and 
fill quantity specifications. Unit is 
shipped without oil in engine.

2.  Use of a Ground Fault Interrupter 

(GFI) is strongly recommended. 
Ground Fault Interrupters can 
significantly reduce the possibility 
of injury if an electrical short occurs. 
In order to install a GFI, the 
welder / generators neutral wire 
must be internally grounded to the 
welder / generators frame, and the 
frame must be properly grounded 
to the earth.

 

A Ground Fault 

 Interrupter may 

not be effective if used on a welder / 
generators that is not grounded! Refer 
to the section entitled Grounding for 
proper steps to ground the welder / 
generator.

3.  When installing a GFI, be sure 

to follow all national and 
local regulations. If not sure of 
regulations or procedures, obtain 
assistance from a qualified (licensed 
or certified) electrical technician.

Summary of Contents for Welder / Generator GW4500

Page 1: ...ich if not avoided COULD result in death or serious injury Caution indicates a potentially hazardous situation which if not avoided MAY result in minor or moderate injury Notice indicates important in...

Page 2: ...by the manufacturer For maintenance and repairs use only products and parts recommended by the manufacturer Be sure that the welder generator is properly grounded to an external ground path prior to o...

Page 3: ...or duty cycles higher than those specified on the equipment labels Never use an electric arc welder to thaw frozen pipes Flying sparks and hot metal can cause injury As welds cool slag can be thrown...

Page 4: ...possible Never wrap arc welder cables around the body Always position the electrode and work leads so that they are on the same side of the body Exposure to electromagnetic fields during welding may...

Page 5: ...itions T Joint made by placing the edge of one piece of metal on the surface of the other piece at approximately a 90 angle Undercut a condition that results when welding amperage is too high The exce...

Page 6: ...t up allow the engine to run for 2 3 minutes with no load 7 As the engine warms up and stabilizes adjust the choke lever to the right until the lever is positioned as far as possible to the right Engi...

Page 7: ...ads b Attempt to determine the cause of the electrical problem overloading or short circuit c Do not use any devices that have short circuits Avoid overloading the welder generator d Press the circuit...

Page 8: ...clamp block 4 Tighten the hex nuts securing the cable in place ELECTRODE HOLDER SEE FIGURE 2 1 Strip 1 2 inch of insulation from the end of the other welding cable Slide the bare wire into the wire s...

Page 9: ...mperage as needed 6 When finished welding turn engine off and store unit properly DUTY CYCLE THERMOSTATIC PROTECTION Welder duty cycle is the percentage of actual weld time that can occur in a ten min...

Page 10: ...trode does not break loose disengage the electrode by releasing it from the holder ELECTRODE TYPE AND SIZE Four types of electrodes are recommended for this welder The electrodes are commonly known by...

Page 11: ...to stick penetration will be poor and uneven beads with irregular ripples result A proper arc should be no longer than the diameter of the rod The sound of a proper arc is a steady crisp sizzle simil...

Page 12: ...itions require different techniques such as a weaving pass circular pass and jogging A higher skill level is required to complete these welds All work should be performed in the flat position if possi...

Page 13: ...5 Open diodes 6 Front panel switch set incorrectly 7 Circuit breaker tripped 1 Adjust engine speed 2 Referring to the wiring diagram clean and reconnect all wiring 3 Replace capacitor 4 Test winding r...

Page 14: ...proper grounding No paint varnish or corrosion 4 Adjust engine speed These diagnostic and repair procedures should be performed by an authorized service center Troubleshooting Chart Welds Symptom Poss...

Page 15: ...ator Welder Power Switch 2 4 6 8 10 12 14 16 18 20 22 24 1 3 5 7 9 11 13 15 17 19 21 23 Capacitor Thermal Trip Fitted Inside the Windings Violet Black Blue Grey Red Brown Yellow Orange Auxiliary Windi...

Page 16: ...16 www chpower com Operating Instructions and Parts Manual 1 2 7 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 11 11 11 21 22 Figure 12 Welder Generator Assembly...

Page 17: ...3811AJ 1 13 Hex head Screw 5 16 18 x 1 1 4 inch 1 14 Flat Washer 5 16 inch ID 2 15 Wing Nut 5 16 18 1 16 Ground Clamp WC100100AV 1 17 Electrode Holder WC200200AV 1 18 Dinse Plug WC000200AV 2 19 Weldin...

Page 18: ...18 www chpower com Operating Instructions and Parts Manual 1 2 3 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 4 10 28 Figure 13 Alternator Assembly...

Page 19: ...Alternator Fan GW001020SV 1 17 Top Cover GW001002SV 1 18 Dinse Socket 200A WC000300AV 2 19 Commutator Knob Small WC400401AV 1 20 Commutator Output GW001045SV 1 21 Commutator Knob Large GW001046SV 1 2...

Page 20: ...g an implied warranty lasts so above limitations may not apply to you C This warranty does not apply to any accessory items included with the product which are subject to wear from usage the repair or...

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