Hobart Handler 190 Technical Manual

Brand: Hobart

Model: Handler 190

Category: Welding System

Type: Technical Manual

This manual is also suitable for

H100S4-10

www.HobartWelders.com

TM-260 273B 2013−02

Eff. w/Serial No. MC420249Y

Processes

Arc Welding Power Source And

Wire Feeder

Description

MIG (GMAW) Welding

Flux Cored (FCAW) Welding

File: MIG (GMAW)

Handler 190 And

H100S4-10 Gun

TABLE OF CONTENTS

SECTION 1 − SAFETY PRECAUTIONS FOR SERVICING 1........................................

1-1. Symbol Usage 1.................................................................

1-2. Servicing Hazards 1..............................................................

1-3. California Proposition 65 Warnings 2.................................................

1-4. EMF Information 2................................................................

SECTION 2 − SPECIFICATIONS 3..............................................................

2-1. Serial Number And Rating Label Location 3...........................................

2-2. Unit Specifications 3..............................................................

2-3. Duty Cycle And Overheating 3......................................................

2-4. Volt-Ampere Curves 4.............................................................

SECTION 3 − INSTALLATION 4................................................................

3-1. Installing Nozzle, Contact Tip, And Adapter 4.........................................

3-2. Installing Welding Gun 5...........................................................

3-3. Installing Work Clamp 6...........................................................

3-4. Process/Polarity Table 7...........................................................

3-5. Changing Polarity 7...............................................................

3-6. Installing Gas Supply 8............................................................

3-7. Serial Number And Rating Label Location 9...........................................

3-8. Selecting A Location 9.............................................................

3-9. Installing Wire Spool And Adjusting Hub Tension 10.....................................

3-10. Electrical Service Guide 11..........................................................

3-11. Connecting Input Power 12..........................................................

3-12. Connecting Optional Spool Gun 14...................................................

3-13. Threading Welding Wire 15..........................................................

SECTION 4 − OPERATION 16..................................................................

4-1. Controls 16.......................................................................

4-2. Weld Parameter Chart For 230 VAC Model 17..........................................

SECTION 5 − THEORY OF OPERATION 18.......................................................

SECTION 6 − TROUBLESHOOTING 20..........................................................

6-1. Troubleshooting Table 20...........................................................

6-2. Troubleshooting Circuit Diagram For Welding Power Source 22...........................

6-3. Control Board PC1 Testing Information 24.............................................

6-4. Control Board PC1 Test Point Values 25...............................................

SECTION 7 − MAINTENANCE 26................................................................

7-1. Routine Maintenance 26............................................................

7-2. Overload Protection 26.............................................................

7-3. Drive Motor Protection 26...........................................................

7-4. Changing Drive Roll Or Wire Inlet Guide 27............................................

7-5. Changing Nozzle, Contact Tip, Adapter And Liner, And Cleaning Gun Casing 28.............

7-6. Replacing Switch And/Or Head Tube 29...............................................

SECTION 8 − ELECTRICAL DIAGRAMS 31......................................................

SECTION 9 − PARTS LIST 40...................................................................

9-4. Optional Drive Rolls 45.............................................................

9-5. Options 45.......................................................................

9-6. Consumables 45..................................................................

Hobart is registered to

the ISO 9001 Quality

System Standard.

TM-260 273 Page 1Handler 190

SECTION 1 − SAFETY PRECAUTIONS FOR SERVICING

Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions.

1-1. Symbol Usage

OM-260 273-A - 2012−10, safety_stm 2011−10

DANGER! − Indicates a hazardous situation which, if

not avoided, will result in death or serious injury. The

possible hazards are shown in the adjoining symbols

or explained in the text.

Indicates a hazardous situation which, if not avoided,

could result in death or serious injury. The possible

hazards are shown in the adjoining symbols or ex-

plained in the text.

NOTICE − Indicates statements not related to personal injury.

. Indicates special instructions.

This group of symbols means Warning! Watch Out! ELECTRIC

SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult sym-

bols and related instructions below for necessary actions to avoid the

hazards.

1-2. Servicing Hazards

The symbols shown below are used throughout this manual

to call attention to and identify possible hazards. When you

see the symbol, watch out, and follow the related instructions

to avoid the hazard.

Only qualified persons should test, maintain, and repair this

unit.

During servicing, keep everybody, especially children, away.

ELECTRIC SHOCK can kill.

D Do not touch live electrical parts.

D Turn Off welding power source and wire feeder

and disconnect and lockout input power using

line disconnect switch, circuit breakers, or by removing plug from re-

ceptacle, or stop engine before servicing unless the procedure spe-

cifically requires an energized unit.

D Insulate yourself from ground by standing or working on dry insulat-

ing mats big enough to prevent contact with the ground.

D Do not leave live unit unattended.

D If this procedure requires an energized unit, have only personnel

familiar with and following standard safety practices do the job.

D When testing a live unit, use the one-hand method. Do not put both

hands inside unit. Keep one hand free.

D Disconnect input power conductors from deenergized supply line

BEFORE moving a welding power source.

SIGNIFICANT DC VOLTAGE exists in inverter weld-

ing power sources AFTER removal of input power.

D Turn Off inverter, disconnect input power, and discharge input

capacitors according to instructions in Troubleshooting Section be-

fore touching any parts.

STATIC (ESD) can damage PC boards.

D Put on grounded wrist strap BEFORE handling

boards or parts.

D Use proper static-proof bags and boxes to

store, move, or ship PC boards.

FIRE OR EXPLOSION hazard.

D Do not place unit on, over, or near combustible

surfaces.

D Do not service unit near flammables.

FLYING METAL or DIRT can injure eyes.

D Wear safety glasses with side shields or face

shield during servicing.

D Be careful not to short metal tools, parts, or

wires together during testing and servicing.

HOT PARTS can burn.

D Do not touch hot parts bare handed.

D Allow cooling period before working on

equipment.

D To handle hot parts, use proper tools and/or

wear heavy, insulated welding gloves and

clothing to prevent burns.

EXPLODING PARTS can injure.

D Failed parts can explode or cause other parts to

explode when power is applied to inverters.

D Always wear a face shield and long sleeves

when servicing inverters.

SHOCK HAZARD from testing.

D Turn Off welding power source and wire feeder

or stop engine before making or changing me-

ter lead connections.

D Use at least one meter lead that has a self-

retaining spring clip such as an alligator clip.

D Read instructions for test equipment.

FALLING EQUIPMENT can injure.

D Use lifting eye to lift unit only, NOT running

gear, gas cylinders, or any other accessories.

D Use equipment of adequate capacity to lift and

support unit.

D If using lift forks to move unit, be sure forks are long enough to

extend beyond opposite side of unit.

D Follow the guidelines in the Applications Manual for the Revised

NIOSH Lifting Equation (Publication No. 94−110) when manu-

ally lifting heavy parts or equipment.

TM-260 273 Page 2 Handler 190

MOVING PARTS can injure.

D Keep away from moving parts such as fans.

D Keep away from pinch points such as drive

rolls.

D Have only qualified persons remove doors,

panels, covers, or guards for maintenance and

troubleshooting as necessary.

D Keep hands, hair, loose clothing, and tools

away from moving parts.

D Reinstall doors, panels, covers, or guards

when maintenance is finished and before re-

connecting input power.

ELECTRIC AND MAGNETIC FIELDS (EMF)

can affect Implanted Medical Devices.

D Wearers of Pacemakers and other Implanted

Medical Devices should keep away from serv-

icing areas until consulting their doctor and the

device manufacturer.

OVERUSE can cause OVERHEATING.

D Allow cooling period; follow rated duty cycle.

D Reduce current or reduce duty cycle before

starting to weld again.

D Do not block or filter airflow to unit.

H.F. RADIATION can cause interference.

D High-frequency (H.F.) can interfere with radio

navigation, safety services, computers, and

communications equipment.

D Have only qualified persons familiar with

electronic equipment install, test, and service

H.F. producing units.

D The user is responsible for having a qualified electrician prompt-

ly correct any interference problem resulting from the installa-

tion.

D If notified by the FCC about interference, stop using the

equipment at once.

D Have the installation regularly checked and maintained.

D Keep high-frequency source doors and panels tightly shut, keep

spark gaps at correct setting, and use grounding and shielding to

minimize the possibility of interference.

READ INSTRUCTIONS.

D Use Testing Booklet (Part No. 150 853) when

servicing this unit.

D Consult the Owner’s Manual for welding safety

precautions.

D Use only genuine replacement parts from the manufacturer.

D Read and follow all labels and the Technical Manual carefully be-

fore installing, operating, or servicing unit. Read the safety in-

formation at the beginning of the manual and in each section.

1-3. California Proposition 65 Warnings

Welding or cutting equipment produces fumes or gases

which contain chemicals known to the State of California to

cause birth defects and, in some cases, cancer. (California

Health & Safety Code Section 25249.5 et seq.)

This product contains chemicals, including lead, known to

the state of California to cause cancer, birth defects, or other

reproductive harm. Wash hands after use.

1-4. EMF Information

Electric current flowing through any conductor causes localized electric

and magnetic fields (EMF). Welding current creates an EMF field

around the welding circuit and welding equipment. EMF fields may inter-

fere with some medical implants, e.g. pacemakers. Protective

measures for persons wearing medical implants have to be taken. For

example, restrict access for passers−by or conduct individual risk as-

sessment for welders. All welders should use the following procedures

in order to minimize exposure to EMF fields from the welding circuit:

1. Keep cables close together by twisting or taping them, or using a

cable cover.

2. Do not place your body between welding cables. Arrange cables

to one side and away from the operator.

3. Do not coil or drape cables around your body.

4. Keep head and trunk as far away from the equipment in the

welding circuit as possible.

5. Connect work clamp to workpiece as close to the weld as

possible.

6. Do not work next to, sit or lean on the welding power source.

7. Do not weld whilst carrying the welding power source or wire

feeder.

About Implanted Medical Devices:

Implanted Medical Device wearers should consult their doctor and the

device manufacturer before performing or going near arc welding, spot

welding, gouging, plasma arc cutting, or induction heating operations.

If cleared by your doctor, then following the above procedures is recom-

mended.

TM-260 273 Page 3Handler 190

SECTION 2 − SPECIFICATIONS

2-1. Serial Number And Rating Label Location

The serial number and rating information for this product is located on back. Use rating label to determine input power requirements and/or rated output.

For future reference, write serial number in space provided on back cover of this manual.

2-2. Unit Specifications

Rated Welding

Output

Amperage

Range

Maximum Open-

Circuit Voltage

Amperes Input at

Rated Load Output

230 V, 60 Hz,

Single-Phase

KVA KW

Weight

W/ Gun

Overall

Dimensions

130 A @ 21.5 Volts

DC, 30% Duty Cycle

25 − 190

31 20.5 4.7 3.88

68 lb

(31 kg)

Length: 19-1/2 in.

(495 mm)

Width: 10-5/8 in.

(270 mm)

Height: 12-3/8 in.

(314 mm)

Wire Type

And Diameter

Solid/

Stainless

Flux Cored Aluminum

Wire Feed Speed Range

.023 − .035 in.

(0.6 − 0.9 mm)

.030 − .045 in.

(0.8 − 1.2 mm)

.030 − .035 in.

(0.8 − 0.9 mm)

50 − 740 IPM (1.3 − 18.8 m/min) At No Load

40 − 700 IPM (1.0 − 17.8 m/min) Feeding Wire

2-3. Duty Cycle And Overheating

Duty Cycle is percentage of 10

minutes that unit can weld at rated

load without overheating.

If unit overheats, thermostat(s)

opens, output stops, and cooling

fan runs. Wait fifteen minutes for

unit to cool. Reduce amperage or

duty cycle before welding.

NOTICE − Exceeding duty cycle

can damage unit or gun and void

warranty.

Overheating

A or V

Reduce Duty Cycle

Minutes

duty1 4/95 − 248 832-A

30% duty cycle at 130 amps

3 Minutes Welding 7 Minutes Resting

Output Amperes

Duty Cycle %

100

200

10 20 30 40 50

60 70 80 100

130

175

TM-260 273 Page 4 Handler 190

2-4. Volt-Ampere Curves

The volt-ampere curves show the

minimum and maximum voltage

and amperage output capabilities of

the welding power source. Curves

of other settings fall between the

curves shown.

ssb1.1 10/91 − 248 833-A

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200

Voltage

Amperage

SECTION 3 − INSTALLATION

3-1. Installing Nozzle, Contact Tip, And Adapter

Ref. 243 839-A

! Turn off welding power

source.

1 Nozzle

2 Contact Tip

3 Tip Adapter

. Wire size stamped on tip − check

and match wire size.

Tools Needed:

8 mm

Head

Tube

8 mm

TM-260 273 Page 5Handler 190

3-2. Installing Welding Gun

260 458-A

1 Drive Assembly

2 MIG Gun

3 Gun Securing Thumbscrew

4 Gun End

Loosen thumbscrew. Insert end

through opening until it bottoms

against drive assembly. Tighten

thumbscrew.

Welding gun must be inserted

completely to prevent leakage of

shielding gas.

5 Gun Trigger Plug

Insert plug into receptacle, and

tighten threaded collar.

6 Spool Gun/MIG Gun Switch

Place switch in MIG Gun position.

Close door.

Correct

Incorrect

. Be sure that gun end is tight against drive assembly.

Gun Fully Seated

Gun Not Seated

Exposed O-rings

will cause shielding

gas leakage.

Spool Gun

MIG Gun

TM-260 273 Page 6 Handler 190

3-3. Installing Work Clamp

258 550-A

. Connection hardware must be tightened with proper

tools. Do not just hand tighten hardware. A loose

electrical connection will cause poor weld performance

and excessive heating of the work clamp.

1 Work Clamp

2 Work Cable From Unit

3 Screw

4 Flat Washer

5 Lock Washer

6 Nut

Route work cable through hole in

clamp handle. Secure cable with

hardware as shown.

Tools Needed:

10 mm

TM-260 273 Page 7Handler 190

3-4. Process/Polarity Table

Process Polarity

Cable Connections

Cable To Gun Cable To Work

GMAW − Solid wire with shield-

ing gas

DCEP − Reverse polarity Connect to positive (+) out-

put terminal

Connect to negative (−) output

terminal

FCAW − Self-shielding wire −

no shielding gas

DCEN − Straight Polarity Connect to negative (−)

output terminal

Connect to positive (+) output

terminal

3-5. Changing Polarity

! Turn off welding power

source.

1 Lead Connections For Direct

Current Electrode Negative

(DCEN)

2 Lead Connections For Direct

Current Electrode Positive

(DCEP)

Always read and follow wire

manufacturer’s recommended

polarity, and see Section 3-4.

Close door.

260 459-A

CHANGING

POLARITY

DCEN

Electrode negative

for flux cored wire

DCEP

Electrode positive

for solid wire

TM-260 273 Page 8 Handler 190

3-6. Installing Gas Supply

Obtain gas cylinder and chain to

running gear, wall, or other

stationary support so cylinder

cannot fall and break off valve.

1 Cap

2 Cylinder Valve

Remove cap, stand to side of valve,

and open valve slightly. Gas flow

blows dust and dirt from valve.

Close valve.

3 Cylinder

4 Regulator/Flowmeter

Install so face is vertical.

5 Regulator/Flowmeter Gas

Hose Connection

6 Welding Power Source Gas

Hose Connection

Connect supplied gas hose

between regulator/flowmeter gas

hose connection, and fitting on rear

of welding power source.

7 Flow Adjust

Flow rate should be set when gas is

flowing through welding power

source and welding gun. Open

pressure assembly so that wire will

not feed. Press gun trigger to start

gas flow.

Typical flow rate is 20 cfh (cubic

feet per hour). Check wire

manufacturer’s recommended

flow rate.

After flow is set, close pressure

assembly.

260 460-A

. DO NOT use Argon/Mixed gas regulator/flowmeter

with CO

shielding gas. See Parts List for optional

gas regulator/flowmeter.

Pressure Assembly

Open

Pressure Assembly

Closed

Argon Gas Or

Mixed Gas

Tools Needed:

5/8 or 11/16, 1-1/8 in.

TM-260 273 Page 9Handler 190

3-7. Serial Number And Rating Label Location

The serial number and rating information for this product is located on the back. Use rating label to determine input power requirements and/or rated

output. For future reference, write serial number in space provided on back cover of this manual.

1 Line Disconnect Device

Locate unit near correct input power

supply.

! Special installation may be

required where gasoline or

volatile liquids are present −

see NEC Article 511 or CEC

Section 20.

3-8. Selecting A Location

18 in

(460 mm)

18 in

(460 mm)

Location And Airflow

260 711-B / ST-139 445-E

! Do not move or operate unit

where it could tip.

TM-260 273 Page 10 Handler 190

3-9. Installing Wire Spool And Adjusting Hub Tension

When a slight force is needed

to turn spool, tension is set.

1/2 in.

Tools Needed:

803 012 / 803 013 -B / Ref. 802 971-C

Installing 8 in. (203 mm) Wire Spool

Installing 4 in. (102 mm) Wire Spool

When a slight force is needed

to turn spool, tension is set.

Retaining ring used

with 8 in. (203 mm)

spool only.

Adapter used with

8 in. (203 mm)

spool only.

TM-260 273 Page 11Handler 190

3-10. Electrical Service Guide

Elec Serv 2011−08

Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommenda-

tions are for a dedicated circuit sized for the rated output and duty cycle of the welding power source.

In dedicated circuit installations, the National Electrical Code (NEC) allows the receptacle or conductor rating to be less than the rating

of the circuit protection device. All components of the circuit must be physically compatible. See NEC articles 210.21, 630.11, and

630.12.

60 Hz

Single

Phase

Input Voltage (V) 230

Input Amperes (A) At Rated Output 20.5

Max Recommended Standard Fuse Rating In Amperes

Time-Delay Fuses

Normal Operating Fuses

Min Input Conductor Size In AWG

Max Recommended Input Conductor Length In Feet (Meters)

(20)

Min Grounding Conductor Size In AWG

Reference: 2011 National Electrical Code (NEC) (including article 630)

1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse.

2 “Time-Delay” fuses are UL class “RK5” . See UL 248.

3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amps), and UL class “H” ( 65 amps and

above).

4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table

310.15(B)(16). If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable

requirements.

TM-260 273 Page 12 Handler 190

3-11. Connecting Input Power

input4 2012−05 − Ref. 803 766-C / 260 711-A

230 VAC, 1

Tools Needed:

=GND/PE Earth Ground

TM-260 273 Page 13Handler 190

input4 2012−05 − 803 766-C / 260 711-A

! Installation must meet all National and

Local Codes − have only qualified per-

sons make this installation.

! Disconnect and lockout/tagout input

power before connecting input con-

ductors from unit. Follow established

procedures regarding the installation

and removal of lockout/tagout

devices.

! Always connect green or green/yellow

conductor to supply grounding termi-

nal first, and never to a line terminal.

See rating label on unit and check input volt-

age available at site.

1 Input Power Cord

2 Disconnect Device (switch shown in the

OFF position)

3 Disconnect Device Grounding Terminal

4 Disconnect Device Line Terminals

5 Black And White Input Conductor (L1

And L2)

6 Green Or Green/Yellow Grounding

Conductor

Connect green or green/yellow grounding

conductor to disconnect device grounding

terminal first.

Connect input conductors L1 and L2 to dis-

connect device line terminals.

7 Over-Current Protection

Select type and size of over-current protec-

tion using Section 3-10 (fused disconnect

switch shown).

8 Receptacle (NEMA 6-50R)

Connect receptacle as shown.

Close and secure door on disconnect device.

Follow established lockout/tagout proced-

ures to put unit in service.

9 Plug (NEMA 6-50P)

Connect plug to receptacle.

3-11. Connecting 1-Phase Input Power (Continued)

Notes

Work like a Pro!

Pros weld and cut

safely. Read the

safety rules at

the beginning

of this manual.

TM-260 273 Page 14 Handler 190

3-12. Connecting Optional Spool Gun

260 573-A

1 Drive Assembly

2 Spool Gun

3 Gun Securing Thumbscrew

4 Gun End

Loosen thumbscrew. Insert end

through opening until it bottoms

against drive assembly. Tighten

thumbscrew.

Spool gun must be inserted

completely to prevent leakage of

shielding gas.

5 Gun Trigger Plug

Insert plug into receptacle, and

tighten threaded collar.

6 Spool Gun/MIG Gun Switch

Place switch in Spool Gun position.

7 Polarity Changeover Terminal

Block

To make proper polarity connection,

see welding power source Owner’s

Manual.

Close door.

8 Wire Feed Speed Control

Wire feed speed is controlled by

welding power source Wire Speed

control (see welding power source

Owner’s Manual or door chart for

appropriate setting).

9 Voltage Control

Arc voltage is controlled by welding

power source Voltage control (see

welding power source Owner’s

Manual or door chart for

appropriate setting).

10 Trigger

Press trigger to energize welding

power source contactor, start

shielding gas flow, and begin wire

feed.

CorrectIncorrect

. Be sure that gun end is tight against drive assembly.

Gun Fully Seated

Gun Not Seated

Exposed O-rings will cause

shielding gas leakage.

Spool Gun

MIG Gun

TM-260 273 Page 15Handler 190

3-13. Threading Welding Wire

1 Wire Spool

2 Welding Wire

3 Inlet Wire Guide

4 Pressure Adjustment Knob

5 Drive Roll

6 Gun Conduit Cable

Lay gun cable out straight.

Tools Needed:

Pull and hold wire; cut off end.

Remove gun nozzle

and contact tip.

Open pressure assembly. Make sure

feed roll is set to correct groove to

match wire size (see Section 7-4).

Push wire thru guides into gun;

continue to hold wire.

. Hold wire tightly to keep it

from unraveling.

260 587-A

WOOD

Feed wire to check drive roll pressure.

Tighten knob enough to prevent slipping.

Cut off wire. Close door.

Press gun trigger until wire comes

out of gun.

Turn power on. Be sure that Voltage range

switch is set to range 1, 2, 3, 4, 5, 6, or 7 to

feed wire. Rotate knob until it “clicks” into

detent. Wire will not feed if range switch is

set between ranges.

6 in

(150 mm)

Tighten

. Use pressure indicator

scale to set a desired

drive roll pressure.

Pressure

Indicator

Scale

Tighten

Be sure that wire is positioned

in proper feed roll groove.

Close and tighten pressure

assembly, and let go of wire.

Be sure that tip matches wire diameter.

Reinstall contact tip and nozzle.

4 in

(120 mm)

TM-260 273 Page 16 Handler 190

SECTION 4 − OPERATION

4-1. Controls

1 Wire Speed Control

Use control to select a wire feed speed. As

Voltage switch setting increases, wire

speed range also increases (see weld

setting label in welding power source or

Section 4-2, as applicable).

2 Power Switch

3 Voltage Switch

The higher the selected number, the

thicker the material that can be welded

(see weld setting label in welding power

source or Section 4-2, as applicable). Do

not switch under load.

. Switch must “click” into detent

position.

4 Gun Trigger Receptacle

5 Trigger Switch

When pressed, energized wire feeds and

shielding gas flows.

Ref. 248 840-A / Ref. 246 668-A

TM-260 273 Page 17Handler 190

4-2. Weld Parameter Chart For 230 VAC Model

248 827-B

Handler 190TM-260 273 Page 18

1 Supplementary Protector CB1

Protects unit from an over-current

condition by opening primary power

line.

2 Power Switch S1

Turns unit and fan motor FM on and

off.

3 Contactor CR3

Turns weld output on and off.

Provides shielding gas flow when

CR3 is energized.

4 Fan Motor FM And Control

Transformer

Controlled by power switch S1. Fan

cools internal components, and

transformer supplies 24 volts ac to

PC1 control circuit.

5 Range Switch S2

Allows selection of a primary

winding tap which provides a weld

output voltage level.

6 Gas Valve GS1

Provides shielding gas flow when

CR3 is energized.

7 Control Board PC1

Switches weld output on and off by

controlling CR3. Regulates motor

speed at a percentage set with Wire

Speed control R2. Provides

dynamic motor braking and starting

through the motor relay. Provides a

bleeder resistor for capacitor C1.

8 Thermostat TP1

If main transformer overheats, TP1

opens gun switch circuit stopping

all weld output.

9 Gun Trigger Receptacle RC7

Connects gun trigger circuit to

welding power source.

10 Wire Speed Control R2

Sets a wire feed motor speed by

providing a reference voltage to

motor control circuit on PC1.

11 Wire Drive Motor

Feeds wire at a speed set by R2.

Motor is enabled when Wire Drive

Selector Switch S3 is set to MIG

Gun position.

12 Main Transformer T1

Supplies power to weld output

circuit. Also supplies 24 volts ac

motor power to control board PC1.

13 Rectifier SR1

Changes the ac output from T1 to

full-wave rectified dc output.

14 Output Capacitor C1

Smooths dc weld voltage from

rectifier SR1.

15 Stabilizer Z1

Smooths dc weld current.

SECTION 5 − THEORY OF OPERATION

Single-Phase

Line Input

Power

Supplementary

Protector CB1

Power Switch

Gas Valve

GS1

Line

Fan Motor FM

And Control

Transformer

Control Board

PC1

Line

Contactor CR3

Range Switch

Wire Drive

Selector

Switch S3

Page is loading ...

Hobart Handler 190 Technical Manual

Brand: Hobart

Model: Handler 190

Category: Welding System

Type: Technical Manual

This manual is also suitable for

H100S4-10

Download PDF

report

Hobart Handler 190 Technical Manual

This manual is also suitable for

Hobart Handler 190 Technical Manual

Related papers

Other documents