Gripnail 7250 Operator's Manual

Model 7250 Power Pinner Bench Hand Welder

POWER PINNER

BENCH

HAND WELDER

7250

OPERATOR’S MANUAL

Copyright: November 20, 2018 Revised:

Serial No.

Gripnail Corporation An Employee Owned Company________________________

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

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Model 7250 Power Pinner Bench Hand Welder

TABLE OF CONTENTS

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

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

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

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

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

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

INTERNAL PART IDENTIFICATION………………………..…………………..7

EXTERNAL PART IDENTIFICATION……….…….…….………………………8

HAND GUN PART IDENTIFICATION…………………………………………..9

WIRING DIAGRAM………………………………………………..………........10

SERVICE POLICY……………………………………………..…………………11
.
WARRANTY…………………………………………..………………………….12

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Model 7250 Power Pinner Bench Hand 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 weld pin or adjacent area after welding until sufficient time is al­lowed 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 Corporation

An Employee Owned Company

97 Dexter Road

East Providence, Rhode Island 02914

Phone: [phone]

Fax: [phone]

Email: [e-mail]

Website: www.gripnail.com

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Model 7250 Power Pinner Bench Hand Welder

DESCRIPTION

The Model 7250 Power Pinner Bench Hand 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 16 gage or lighter sheet 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 15-20 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 second, or equal to the weld time control setting.

SPECIFICATIONS

Input voltage — 190-240 volts AC, 50/60 Hz, 1 Phase, 35 Amps
(Recommend using a 50 Amp (minimum), slow blow Disconnect)

Electrical connection —10 ft, 8/3 power cord.

Ground cable — 5 feet, # 4/0 weld cable, with a spring loaded, copper alloy clamp

Weld gun cable — 15 feet, # 4/0 weld cable and # 16/3 control cable

Dimensions — 14” L x 18” W x 46” H (including handle)

Weld rate — 15-20 welds per minute (depending on weld time settings).

Gun type — pistol grip

Shipping weight—140 lbs., boxed

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