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February
1997
Form:
OM-185
356
Effective With Serial
No.
KH31
31 00
MW165
OWNERS
MANUAIL
~ IMPORTANT: Read
and understand the entire contents of this
manual,
with
special emphasis
on
the
safety
material
throughout
the
manual,
before
in
stalling, operating,
or
maintaining
this
equipment.
This unit and these
instructions
are
for
use
only by
persons trained and
experienced
in the
safe
operation
of
welding equipment.
Do
not
allow untrained persons
to
install,
operate,
or
maintain this unit. Contact your distributor if you do
not
fully
understand these instructions.
L~u_
TOOLSfi
cover
I
5/92
Ref.
ST-801
785
PRINTED
IN
USA

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Summary of Contents for MAC TOOLS MW165

  • Page 1 February 1997 Form: OM-185 Effective With Serial KH31 31 00 L~u_ MW165 TOOLSfi OWNERS MANUAIL ~ IMPORTANT: Read and understand the entire contents of this manual, with special emphasis safety material throughout manual, before stalling, operating, maintaining this equipment. This unit and these...
  • Page 3 words used throughout this manual call attention following safety alert symbol signal to and identity different levels of hazard and special instructions. WARNING which WARNING practices followed avoid serious identify procedures must personal statements Injury loss of life. CAUTION which be followed CAUTION identify procedures...
  • Page 5 Watch for fire fire explosion. fire, keep extinguisher nearby. WELDING can cause that welding ceilIng, floor, bulkhead, aware on a partition Sparks spatteufly off from welding arc. fire the hidden side. flying metal, weld spatter, can cause sparks and hot fires and workpiece, equipment...
  • Page 6 SPECIFICATIONS SECTION Source Table 1-1. Welding Power Description SpecificatIons Voltage (DC/CV) Type Output Direct Current/Constant Rated Weld 20 Volts Duty Cycle Output Amperes, Single-Phase; At 230 Volts AC Type Input Power Input Amperes At Rated 20 A At 230 V Output KVAIKW Used At Rated 4.7 kVAI4 kW...
  • Page 7 1-2. Volt-Ampere Curves volt-ampere show the curves minimum and maximum voltage output capabilities amperage welding power source. Curves of other settings fall be tween the shown. curves LOAD AMPS ssbl.1 1O/91SB-180765 Volt-Ampere Curves FIgure 1-2. SECTION INSTALLATION 2-1. Work Clamp Installing Insulator Bolt...
  • Page 8 2-2. Installing Welding Securing Drive Assembly Gun End Loosen securing Insert end nut. through front panel opening until it bottoms against drive assembly. Tighten nut. Trigger Plug into Insert plug receptacle, tighten threaded collar. Close door. _____ _________ Tools Needed: 5/16 in Ref.
  • Page 9 2-4. Installing Supply WARNING damaged. BUILDUP OF SHIELDING GAS CYLINDERS explode harm health kill. and other Keep cylinders away from welding Shut off shielding supply when electrical circuits. not in use. with welding electrode. Never touch cylinder cylinder gear, wall, Always running secure...
  • Page 10 2-6. Power Selecting A Location And Connecting Input WARNING ELECTRIC SHOCK kill. not touch live electrical parts. Turn Off and disconnect input power before inspecting installing. welding power source, swaml.1 Rating Label Supply input correct power. Plug Receptacle Connect plug receptacle.
  • Page 11 2-7. Feeding Welding Wire Threading WARNING £~ WELDING WIRE CYLINDERS explode damaged. cause puncture wounds. away from welding and other Keep cylinders electrical circuits. Do not press trigger until instructed to do Never touch with welding electrode. cylinder point toward of the part body,...
  • Page 12 2-8. Weld Parameters Material Thickness Wire Type, Wire Operator Shielding Gas, Diameter 1/8 in. 1/4 in. 3/16 in. Controls 14 ga. 18 ga. 2Oga. And Flow Rate (inch) (6.4 mm) (4.8 mm) (3.2 Voltage Tap .023 Wire Speed E7OS-6 Voltage Tap .030 Wire Speed...
  • Page 13 SECTION 3- OPERATION READ SAFETY BLOCKS beginning of manual before proceeding. injury. ARCING MOVING PARTS damage switch. can cause such drive rolls. Keep away from pinch points change Voltage switch position while welding. covers, and guards closed Keep doors, panels, Arcing inside switch securely...
  • Page 14 SECTION MAINTENANCE & TROUBLESHOOTING WARNING ELECTRIC SHOCK kill. MOVING PARTS injury. can cause Keep away from touch live electiical moving parts. parts. Turn Off and discc welding power source, Keep away from pinch points such drive rolls. power before inspecthg, maintaining, Input servicing.
  • Page 15 Short Circuit Shutdown If contact is shorted and sticks workpiece, the unit shuts down, but fan operation, release gun runs. resume from Check trigger, turn unit, contact workpiece. contact replace damaged. Turn On unit remove continue operation. 4-2. Drive Maintenance Assembly READ SAFETY BLOCKS at start...
  • Page 16 4-3. Gun Maintenance READ SAFETY BLOCKS at start Section 4 before proceeding. injury damage equipment. FLYING METAL CHIPS AND DIRT can cause out with Point gun away from and in safe direction when blowing compressed air. people sw~m10.1 10/91 Turn Off unplug unit.
  • Page 17 Section Remedy Wire Drive/Gun Trouble gun cable and/or replace damaged parts. Electrode Straighten wire feeding. during stops welding. drive roll Adjust pressure. Readjust hub tension. if blocked. Replace contact wire inlet guide liner if dirty plugged. Clean replace drive roll bearing slipping.
  • Page 18 SECTION 6- PARTS LIST ST-801 Figure 6-1. Main Assembly OM-185 356 Page...
  • Page 19 Parts For Main Assembly dof~s) above. NOTE: All items indented included with the item listed directly Item Part Item Part Item Part Description Description Description 117014 Fan Motor 180 777 Rotary Switch w/Knob 126 838 Drive Assembly 005656 Fan Blade 185265 Case 090416...

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