Gripnail 7100 Operator's Manual

Model 7100 Portable Pin Welder

MODEL 7100

PORTABLE PIN WELDER

OPERATOR’S MANUAL

Copyright: March 22, 2005 Revised: December 20, 2016

Gripnail Corporation

97 Dexter Road East Providence, Rhode Island 02914-2045 Tel: [phone] Fax: [phone]
E-mail: [e-mail] Website: www.gripnail.com

An Employee Owned Company________________________

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Model 7100 Portable Pin Welder

TABLE OF CONTENTS

OPERATOR SAFETY……...….……………………..…………………………...3

DESCRIPTION………………………………………..…………………………..4

SPECIFICATIONS…………………………………….………………………….4

INSTALLATION………………………………………….………………………5

CHANGING SUPPLY VOLTAGE (transformer) TAP……………….…………..5

SETUP and OPERATION……………………………………….………………..6

MAINTENANCE……………………………………………….………………...6

WELDER - PARTS IDENTIFICATION………………………..……………..7– 9

PIN WELDING GUN - PARTS IDENTIFICATION……….…….…….……10-11

WIRING DIAGRAM - PARTS LEGEND………………………..….………….11

WIRING DIAGRAM………………………………………………..……….......12

SERVICE POLICY……………………………………………..………………..13

WARRANTY…………………………………………..………………………...14

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Model 7100 Portable Pin Welder

OPERATOR SAFETY

Our first concern at Gripnail is the safety of the operators using our equipment. As with
most types of welding equipment, there is always a potential for serious injury if the
equipment is misused. Please familiarize yourself with the equipment before operating.
Below is a list of a few safety precautions that should be observed.

1. READ this manual before you begin using the equipment.

2. DO NOT OPERATE this welder in or near water or damp areas.

3. DO NOT LOOK directly at the weld pin while welding. Arcing produced by the
welding process could cause flash burns to your eyes and could cause blindness.

4. WEAR protective clothing to prevent skin burns from weld slag.

5. DO NOT TOUCH the pin or adjacent area after welding until sufficient time is al-

lowed for cooling. Otherwise, serious burns may result.

6. DO NOT OPERATE the welder unless all covers are in place.

7. DO NOT PULL or move the welder by the attached cables or damage to the cables
will result.

8. CONTACT the Gripnail Service Department for assistance with replacement parts,
repairs, questions or diagnosing a problem with the welder.

Gripnail Customer Service Department

Gripnail Corporation

97 Dexter Road

East Providence, Rhode Island 02914

Phone: [phone]

[phone]

Fax: [phone]

Email: [e-mail]

Website: www.gripnail.com

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Model 7100 Portable Pin Welder

DESCRIPTION

The Model 7100 Portable Pin Welder is a solid state resistance welder designed for welding
Power-Point Resistance Weld Pins to galvanized sheet metal ductwork. Exceptionally strong
welds will be obtained with 24 gage or lighter sheet metal. Acceptable results have been ob­tained on heavier metal. However, tests should be performed to determine the correct weld
time settings and if the weld is acceptable per individual requirements.

The normal, continuous weld rate is 8-12 welds per minute. It is capable of welding at faster
rates, but for short durations only. Care should be exercised not to exceed the continuous rate
for long periods, otherwise component overheating and damage may occur.

The weld gun has a pistol grip style handle with a trigger switch and extra long cables. Weld­ing current is not available at the gun until the weld pin contacts the sheet metal. The weld
relay and weld timer operations may be tested by activating the trigger without the pin touch­ing the sheet metal. The “WELD ON” light will turn ON, as well as the weld transformer, for
up to 1.5 seconds, or equal to the weld time control setting.

SPECIFICATIONS

Input voltage — 190-240 volts AC, 60 Hz, 1 Phase, 30 Amps

Electrical connection —7 ft, 12/3 power cord terminating with a 4 prong, 30 amp twist-lock
plug. Connections used are “ground”, “X” and “Y”.

Ground cable — 2.5 feet, # 4/0 weld cable, with a spring loaded, copper alloy clamp

Weld gun cable — 10.5 feet, # 3/0 weld cable and # 18/3 control cable

Dimensions — 16” L x 9-5/8” W x 7-1/4” H

Weight (including gun and cables) - 65 lbs.

Weld rate — 8-12 welds per minute (depending on weld time settings).

Gun type — pistol grip

Gun weight (less cables) — 1.6 lbs.

Gun dimensions— 5-1/4” L x 2” diameter

Shipping weight—80 lbs., crated

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Model 7100 Portable Pin Welder

INSTALLATION

The portable pin welder is designed to operate from 190 to 240 volts AC. There are three
available tap connections based on supply voltage.

190-208 2
208-230 3
230-240 4

ELECTRICIAN’S NOTE: A 4-wire, 3 phase plug is used on the power cord with connec­tions to “ground”, “X” and “Y” terminals. Although the welder is a “single phase” device,
this plug permits connection to standard 3 phase receptacles commonly used is most sheet
metal fabrication shops.

AC Line Voltage Connect wire, part # 20, to tap number

CHANGING THE SUPPLY VOLTAGE (transformer) TAP

CAUTION—

After the tap change is completed, fully reassemble cover prior to plugging it into the
electrical power source.

1. The voltage tap is factory set for 208-230 volts.

2. Remove the cover and locate wire part number 20 at position #3 on the terminal block.
Refer to picture on page 7.

3. Move the wire to terminal #2 OR #4 to match the supply voltage.

4. Replace the cover securely before plugging into power.

Unplug the welder from the electrical power before removing the cover.

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