background image

A-4

INSTALLATION   

LN™-25 PIPE

A-4

WIRE DRIVE CONFIGURATION

(See Figure A.2)

CHANGING  THE  GUN  RECEIVER
bUSHING

ELECTRIC SHOCK can kill.

• Turn  the  input  power  OFF  at  the

welding  power  source  before  instal-
lation  or  changing  drive  rolls  and/or
guides.

• Do not touch electrically live parts.
• When  inching  with  the  gun  trigger,  electrode

and  drive  mechanism  are  "hot"  to  work  and
ground and could remain energized several sec-
onds after the gun trigger is released.

• Do  not  operate  with  covers,  panels  or  guards

removed or open.

• Only qualified personnel should perform mainte-

nance work.

------------------------------------------------------------------------

Tools required:    

• 1/4"  hex key wrench.
Note: Some gun bushings do not require the use of

the thumb screw.

1. Turn power off at the welding power source.
2. Remove the welding wire from the wire drive.
3. Remove the thumb screw from the wire drive.
4. Remove the welding gun from the wire drive.

5. Loosen  the  socket  head  cap  screw  that  holds  the

connector bar against the gun bushing.

Important:  Do  not  attempt  to  completely
remove the socket head cap screw.

6. Remove  the  outer  wire  guide,  and  push  the  gun

bushing out of the wire drive.  Because of the pre-
cision  fit,  light  tapping  may  be  required  to  remove
the gun bushing.

7. Disconnect  the  shielding  gas  hose  from  the  gun

bushing, if required.

8. Connect  the  shielding  gas  hose  to  the  new  gun

bushing, if required.

9. Rotate the gun bushing until the thumb screw hole

aligns with the thumb screw hole in the feed plate.
Slide  the  gun  receiver  bushing  into  the  wire  drive
and verify the thumb screw holes are aligned.

10. Tighten the socket head cap screw.
11. Insert  the  welding  gun  into  the  gun  bushing  and

tighten the thumb screw.

GUN RECEIVER BUSHING

LOOSEN       TIGHTEN

THUMB SCREW

OUTER WIRE GUIDE

SOCKET HEAD
CAP SCREW

CONNECTOR BLOCK

GUN RECEIVER BUSHING

LOOSEN       TIGHTEN

THUMB SCREW

OUTER WIRE GUIDE

SOCKET HEAD
CAP SCREW

CONNECTOR BLOCK

WARNING

PROCEDURE  TO  INSTALL  DRIVE  ROLLS
AND WIRE GUIDES

• Turn  the  input  power  OFF  at  the

welding  power  source  before  instal-
lation  or  changing  drive  rolls  and/or
guides.

• Do not touch electrically live parts.
• When  inching  with  the  gun  trigger,  electrode

and  drive  mechanism  are  "hot"  to  work  and
ground and could remain energized several sec-
onds after the gun trigger is released.

• Do  not  operate  with  covers,  panels  or  guards

removed or open.

• Only qualified personnel should perform mainte-

nance work.

------------------------------------------------------------------------

1. Turn power off at the welding power source.
2. Release the idle roll pressure arm.
3. Remove the outer wire guide by turning the knurled

thumbscrews  counter-clockwise  to  unscrew  them
from the feed plate.

4. Rotate  the  triangular  lock  and  remove  the  drive

rolls.

5. Remove the inner wire guide.
6. Insert  the  new  inner  wire  guide,  groove  side  out,

over the two locating pins in the feed plate.

7. Install  a  drive  roll  on  each  hub  assembly  secure

with the triangular lock.

8. Install  the  outer  wire  guide  by  aligning  it  with  the

pins and tightening the knurled thumbscrews.

9. Close the idle arm and engage the idle roll pressure

arm.  Adjust the pressure appropriately.

WARNING

FIGURE A.2

Summary of Contents for LN- 25 PIPE IM10056

Page 1: ...056 October 2010 For use with machines having Code Number 11693 Safety Depends on You Lincoln arc welding and cutting equipment is designed and built with safety in mind However your overall safety ca...

Page 2: ...KER WEARERS SHOULD CONSULT WITH THEIR DOCTOR bEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase a copy...

Page 3: ...r cooling 3 h Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both welde...

Page 4: ...to adjacent areas Avoid welding near hydraulic lines Have a fire extinguisher readily available 6 b Where compressed gases are to be used at the job site special precautions should be used to prevent...

Page 5: ...opri s et non inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir chemise paisse pa...

Page 6: ...he situation with the technical assistance of the manufacturer In some cases this remedial action may be as simple as earthing grounding the welding circuit see Note In other cases it could involve co...

Page 7: ...ns Welding Cables The welding cables should be kept as short as possible and should be positioned close together running at or close to floor level Equipotential Bonding Bonding of all metallic compon...

Page 8: ...important when identifying the correct replacement parts On Line Product Registration Register your machine with Lincoln Electric either via fax or over the Internet For faxing Complete the form on t...

Page 9: ...tations Recommended Power Sources B 2 Case Front Controls B 3 thru B 6 Internal Controls B 7 Internal Controls Decription B 8 Rear Controls B 9 ________________________________________________________...

Page 10: ...Handle folded down PHYSICAL DIMENSIONS INPUT VOLTAGE 10 15 110 VDC INPUT AMPERES 4A RATED OUTPUT 104 F 40 C DUTY CYCLE 60 rating INPUT AMPERES 450 GEARING WIRE FEED SPEED RANGE WIRE SIzE WFS RANGE 50...

Page 11: ...AN KILL Turn the input power OFF at the disconnect switch or fuse box before attempting to connect or disconnect input power lines out put cables or control cables Only qualified personnel should perf...

Page 12: ...the cylinder valve for an instant This blows away any dust or dirt which may have accumulated in the valve out let 4 Attach the flow regulator to the cylinder valve and tighten the union nut s securel...

Page 13: ...thumb screw hole aligns with the thumb screw hole in the feed plate Slide the gun receiver bushing into the wire drive and verify the thumb screw holes are aligned 10 Tighten the socket head cap screw...

Page 14: ...the spindle 2 Place the spindle adapter on the spindle aligning the spindle brake pin with the hole in the adapter 3 Place the spool on the spindle and align the adapter brake tab with one of the hole...

Page 15: ...l Switch See Figure A 6 Place the power source Remote Local switch in the Local position Place CV CC switch in the feeder in the CV position Work clip Work Electrode Across the Arc LN 25 PIPE CV 400 C...

Page 16: ...Drive Roll Kit Welding Gun CV power Source Welding Cables CV Power Source with Twist Mate Connectors and no Remote Local Switch See Figure A 9 Place CV CC switch in the feeder in the CV position Work...

Page 17: ...ep your head out of fumes Use ventilation or exhaust to remove fumes from breathing zone WELDING SPARKS can cause fire or explosion Keep flammable material away ARC RAYS can burn Wear eye ear and body...

Page 18: ...to be simple reliable and easy to service General Functional Description The LN 25 PIPE as designed is a simple robust feeder Standard features include a calibrated wire feed speed dial 2 step trigger...

Page 19: ...en activated For example if the original wfs 200 in min the feed er will regulate to 0 83 x 200 166 in min The 83 trigger requires a gun with a dual procedure switch This feature is often useful when...

Page 20: ...play shows OCV The wire feed speed LED is lit Welding The value in the left display will be either amps or actual wire feed speed depending upon the selection chosen in the set up menu The correspondi...

Page 21: ...ly when running with 035 or 045 0 9 or 1 2mm solid steel wires at high wire feed speeds US V A O O OO WFS LN 25 PIPE US V A O O O O WFS LN 25 PIPE U o r E V A O O OO WFS LN 25 PIPE U o r E V A O O O O...

Page 22: ...For wire feeders equipped with standard torque gear ing the WFS range can be changed to provide better knob sensitivity at low wire feed speeds This is often useful when welding with Innershield wire...

Page 23: ...Socket Head Cap Screw for securing the Gun Bushing 4 5 9 Drive Hubs 11 Cold Feed Pushbutton 10 Inlet Wire Guide 11 10 1 2 Step Trigger Interlock Switch 2 Pressure Adjustment Arm 3 Optional Timer Kit S...

Page 24: ...Interlock operation provides for operator com fort when making long welds When the gun trigger is first pulled the welding power source energizes the output and the wire feeder feeds wire for welding...

Page 25: ...tch is useful for setting the proper flow rate of shielding gas Flow meters should always be adjusted while the shielding gas is flowing b 9 OPERATION b 9 REAR CONTROLS LN 25 PIPE 1 Gas Purge Pushbutt...

Page 26: ...g 2 0 Cable 9 2 7m long Includes Twist Mate to Lug 1 0 cable of length xx Includes Lug to Lug 3 0 Cable of length xx for lengths up to 60 18 3m Lug to Lug 4 0 Cable of length xx for lengths greater th...

Page 27: ...nectors Magnum 200 300 400 guns and compatible with Tweco 2 4 Gun Receiver Bushing for guns with K613 7 Lincoln gun connec tors Magnum 550 guns and com patible with Tweco 5 Includes One 300 Amp Ground...

Page 28: ...djustable Gas Regulator Wire Feed Speed Meter Includes Gun receiver bush ing with hose nipple set screw and hex key wrench Includes Gun receiver bushing with hose nipple 4 guide tubes set screw and he...

Page 29: ...ain energized several seconds after the gun trigger is released Do not operate with covers panels or guards removed or open Only qualified personnel should perform mainte nance work D 1 MAINTENANCE D...

Page 30: ...ce Facility If you do not understand or are unable to perform the Recommended Course of Action safely contact your local Lincoln Authorized Field Service Facility HOW TO USE TROUbLESHOOTING GUIDE Serv...

Page 31: ...tor overload long term Err 82 Motor overload short term 1 The wire drive motor has over heated 1 The wire drive motor current draw has exceeded limits usually because the motor is in a locked rotor st...

Page 32: ...enoid 5 There is a loose solenoid connec tion 6 The solenoid has failed 1 The gun cable is kinked and or twisted 2 The wire is jammed in the gun and cable 3 The gun liner is dirty or worn 4 The electr...

Page 33: ...ometer is connected improperly 2 The tachometer has failed 1 Wrong size worn and or melted contact tip 2 Worn work cable or poor work connection 3 Wrong polarity 4 The gas nozzle is extended beyond th...

Page 34: ...may not be accurate for all machines covered by this manual The specific diagram for a particular code is pasted inside the machine on one of the enclosure panels If the diagram is illegible write to...

Page 35: ...F 2 DIMENSION PRINT F 2 LN 25 PIPE 1 6 C I R C L E 1 2 x 1 8 E L L I P S E 2 3 1 7 1 4 8 1 8 6 5 1 7 1 9 16 CIRCLE 12 x 18 ELLIPSE 23 17 14 81 8 65 17 19...

Page 36: ...NOTES LN 25 PIPE...

Page 37: ...h electrically live parts or electrode with skin or wet clothing Insulate yourself from work and ground No toque las partes o los electrodos bajo carga con la piel o ropa moja da Aislese del trabajo y...

Page 38: ...te Be und Entl ftung des Arbeitsplatzes Mantenha seu rosto da fuma a Use ventila o e exhaust o para remover fumo da zona respirat ria Turn power off before servicing Desconectar el cable de ali mentac...

Page 39: ...and Service through Subsidiaries and Distributors Worldwide Cleveland Ohio 44117 1199 U S A TEL 216 481 8100 FAX 216 486 1751 WEB SITE www lincolnelectric com World s Leader in Welding and Cutting Pr...

Reviews: