Harbor Freight Tools 66787 Manual Del Producto

Page 12

SKU 66787

The 

1. 

duty cycle defines the number 

of minutes, within a 10 minute period, 

during which a given Welder can 

safely produce a particular welding 

current.  For example, this Welder, 

with a 40% duty cycle at 130 Amps 

(maximum setting), must be allowed 

to rest for at least 

6 minutes after 

every 

4  minutes of continuous weld 

at 130 Amps.

Failure to carefully observe duty cy-

• 

cle limitations can stress a Welder’s 

power generation system, contribut-

ing to premature Welder failure.
This Welder is equipped with an 

• 

internal thermal protection system 

to help prevent damage to the unit. 

When the unit overheats; it auto-

matically shuts down, then returns 

to service when it cools down.
Once the unit returns to service, fol-

• 

low a more conservative duty cycle 

routine to help prevent excess wear 

to the Welder.

Mount the metal to be welded to the 

2. 

metal work table.  It should be mount-

ed so that the welding debris falls to 

the cement floor.
Place the Welder no closer than six 

3. 

feet from the workpiece to be welded 

and attach the Tig Torch, if desired.
Securely attach the Ground Clamp 

4. 

(9) to a part of the workpiece or metal 

table.  

Place the bare end of an Electrode 

5. 

(not included) in the Electrode Holder 

(8).  NOTE:  Always keep the jaws of 

the Electrode Holder clean to ensure 

proper electrical contact with the 

Electrode.  

Set the desired current on the Poten-

6. 

tiometer Dial (4) from 10 to130 amps 

for the type of metal being welded.  

Thin metals use low current and  

heavy metals use high current. 

(See Figure B.)
Make sure the Power Switch (16) is 

7. 

oFF.  Then plug the Welder’s Power 

Cord (17) into the nearest 240 volt, 

dedicated, grounded, electrical outlet 

with delayed action type circuit break-

er or fuse.  

While gripping the Handle of the 

8. 

Electrode Holder (8), with the Elec-

trode clear of grounded objects, turn 

the Power Switch (16) 

oN. 

(See Figure c.)
Hold the Electrode Holder (8) firmly. 

9. 

cautIoN!  The Electrode Holder is 

“live”.  

Never look at the ignited 

arc without ANSI-approved, arc shad-

ed, eye protection in a full face shield.  

Permanent eye damage or blindness 

can occur.  Skin burns can occur.  

REV 09h