Gripnail 7100 Manual de usuario
Model 7100 Portable Pin Welder
1
MODEL 7100
PORTABLE PIN WELDER
OPERATOR’S MANUAL
Copyright: March 22, 2005 Revised: December 20, 2016
Gripnail Corporation
An Employee Owned Company________________________
97 Dexter Road East Providence, Rhode Island 02914-2045 Tel: (800) 474-7624 Fax: (401) 438-8520
E-mail: gripnail@gripnail.com Website: www.gripnail.com
Model 7100 Portable Pin Welder
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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
Model 7100 Portable Pin Welder
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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: (800) 474-7624
(401) 431-1791
Fax: (401) 438-8520
Website: www.gripnail.com
Model 7100 Portable Pin Welder
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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 ob-
tained 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. Weld-
ing 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 touch-
ing 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
Model 7100 Portable Pin Welder
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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.
AC Line Voltage Connect wire, part # 20, to tap number
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 connec-
tions 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.
CHANGING THE SUPPLY VOLTAGE (transformer) TAP
CAUTION—
Unplug the welder from the electrical power before removing the cover.
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.
Model 7100 Portable Pin Welder
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SETUP and OPERATION
1. Attach the spring loaded ground clamp to the work table or directly to the duct. Insure the
connection is clean and free of foreign material or weld quality will be compromised.
2. Plug the welder into a proper electrical outlet and adjust the “Weld Time” to number “5”.
3. Use duct liner and a piece of scrap metal of the same gage for the following test.
4. Place a weld pin on the gun’s magnetic weld tip.
5. Press the pin into the liner, making contact with the metal using a twisting motion, then
apply moderate pressure prior to activating and throughout the weld cycle.
6. Pull and hold the trigger to start and continue the weld cycle. The green “WELD ON”
light will turn ON during the weld cycle and will automatically go OFF.
7. Release the trigger, lift the gun from the metal, then repeat the process with a new pin.
8. Test weld several pins in this manner and adjust the “Weld Time” to the lowest setting
required to give good weld results.
MAINTENANCE
The Model 7100 Portable Pin Welder requires very little maintenance due to it’s solid state
circuitry and design. We do, however, recommend the following procedures periodically.
CAUTION: Turn welder OFF and disconnect from electrical supply before
any maintenance or service is performed.
1. Remove all accumulated insulation dust and foreign debris from inside the welder.
2. Tighten all mounting hardware on solid state circuit components, transformers, cable con-
nections to weld transformer, ground clamp, weld gun and control cable.
3. Using a steel wire brush, clean the contact surfaces of the spring loaded ground clamp.
4. Clean and inspect the magnetic weld tip. Replace if badly burned, deeply pitted or if the
magnetism is too weak to properly hold a weld pin.
5. Carefully inspect and tighten all cable strain reliefs. Note: On the weld gun assembly, the
weld cable should take the heavy strain load, not the lighter control cable.
Model 7100 Portable Pin Welder
7
WARNING
The inside view of the welder is shown below for parts identification
purposes only.
DO NOT OPERATE the welder with the cover removed.
Possible injury or accidental electrical shock may result.
WELD CABLE LUG
(GROUND)
WELD TIMER (U1)
CONTROL
TRANSFORMER (T2)
WELD RELAY (U2)
POWER SUPPLY
RECTIFIER ASSEMBLY
ON/OFFSWITCH
WELD TRANSFORMER (T1)
WELD CABLE LUG
(GUN)
TERMINAL BLOCK
(POWER SUPPLY)
WIRE PART NO. 20
TERMINALS 2 ,3 & 4
(FOR INPUT VOLTAGE TAP SETTINGS
Refer to page 5.)
Model 7100 Portable Pin Welder
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Model 7100 Portable Pin Welder
9
Item number Part number Quantity Description
1 2742-E 1 Clamp, ground
2 2741-E 3.5' Cable, weld 4/0
3 2748-E 1 Power supply rectifier assembly
4 1173-M 2 Spacer, threaded
5 1207-M 9 Washer, lock # 6
6 GN P/N 51310 1 Relay, weld (U2)
7 1227-M 7 Nut, hex # 6-32
8 GN P/N 51309 1 Timer, weld (U1)
9 2036-M 2 Nut, hex # 4-40
10 2037-M 2 Washer, lock # 4
11 2738-E 1 Block, 5 terminal
12 2735-E 1 Transformer, control (T2)
13 2702-E 1 Transformer, weld (T1)
14 2744-E 1 Plug, AC line
15 2740-E 2 Lug, weld cable
16 1218-M-0750 2 Bolt, 1/4"-20 x 3/4"
17 1216-M 10 Nut, hex 1/4"-20
18 2039-M 12 Washer, flat 1/4"
19 2029-M 6 Washer, split 1/4"
20 2343-E 7.5' Cord, 12/3, AC line
21 2732-M 1 Strain relief, AC line
22 1211-M 5 Nut, hex # 10-32
23 1230-M 5 Washer, lock # 10
24 2739-E 1 Block, 8 terminal
25 2734-E 1 Switch, ON/Off (S1)
26 2295-E-SN 2 Nut, speed
27 2887-M 1 Insulator
28 GN P/N 51402 1 Potentiometer
29 2301-M 4 Feet
30 2730-M 1 Strain relief, ground
31 1395-M 1 Knob, potentiometer
32 2703-E 1 Light, power ON (L1)
33 2295-E 1 Light, weld ON (L2)
34 2731-M 1 Strain relief, gun
35 1126-M 1 Strain relief, control
36 2882-M 4" Tubing, heat shrink
37 2728-M-A 1 Chassis, painted
38 2066-M-0750 16 Screw, cover
39 2729-M-A 1 Cover assembly w/ handle
40 2441-M 1 Handle assembly
Parts Identification
Model 7100 Portable Pin Welder
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PIN WELDING GUN
MAGNETIC TIP
GN P/N 42469
GUN TRIGGER SWITCH
GN P/N 51308
The magnetic tip must be kept clean during use or weld quality will be com-
promised. Check the tip condition often for wear and clean with a steel wire
brush to remove glue buildup and burning as necessary. Replace when it be-
comes badly pitted or the magnets fail to hold a pin.
SET SCREW
To replace the tip, loosen the two set screws and pull the tip out.
Insert the new tip then tighten both screws.
COMPLETE HANDLE ASSEMBLY
GN P/N 51384
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