Jet LF-20 Operating Instructions And Parts Manual Download Page 2

 

 

1.0

  IMPORTANT SAFETY 

INSTRUCTIONS 

WARNING – To reduce risk of injury: 

1.  Read  and  understand  the  entire  owner's 

manual  before  attempting  assembly  or 
operation. 

2.  Read and understand the warnings posted on 

the  machine  and  in  this  manual.  Failure  to 
comply  with  all  of  these  warnings  may  cause 
serious injury. 

3.  Replace  warning  labels  if  they  become 

obscured or removed. 

4.  This  lockformer  is  designed  and  intended  for 

use  by  properly  trained  and  experienced 
personnel only. If you are not familiar with the 
proper  and  safe  operation  of  a  lockformer,  do 
not  use  until  proper  training  and  knowledge 
have been obtained. 

5.  Do  not  use  this  machine  for  other  than  its 

intended  use.  If  used  for  other  purposes,  JET 
disclaims any real or implied warranty and holds 
itself  harmless  from  any  injury  that  may  result 
from that use. 

6.  Always  wear  ANSI  Z87.1  approved  safety 

glasses or face shield while using this machine. 
(Everyday  eyeglasses  only  have  impact 
resistant lenses; they are 

not 

safety glasses.) 

7.  Before  operating  this  machine,  remove  tie, 

rings,  watches  and  other  jewelry,  and  roll 
sleeves up past the elbows. Do not wear loose 
clothing. Confine long hair. Non-slip footwear or 
anti-skid floor strips are recommended. Do not 
wear gloves. 

8.  Wear  hearing  protection  (plugs  or  muffs)  if 

noise exceeds safe levels. 

9.  Do not operate this machine while tired or under 

the  influence  of  drugs,  alcohol  or  any 
medication. 

10.  Make  certain  switch  is  in  OFF  position  before 

connecting the machine to the power supply. 

11.  Make certain the machine is properly grounded. 

12.  Make all machine adjustments or maintenance 

with  the  machine  unplugged  from  the  power 
source. 

13.  Remove adjusting keys and wrenches. Form a 

habit of checking to see that keys and adjusting 
wrenches  are  removed  from  the  machine 
before turning it on.  

14.  Keep safety guards in place at all times when 

the  machine  is  in  use.  If  removed  for 
maintenance  purposes,  use  extreme  caution 
and  replace  the  guards  immediately  after 
completion of maintenance. 

15.  Check damaged parts. Before further use of the 

machine, a guard or other part that is damaged 
should be carefully checked to determine that it 
will  operate  properly  and  perform  its  intended 
function. Check for alignment of moving parts, 
binding  of  moving  parts,  breakage  of  parts, 
mounting  and  any  other  conditions  that  may 
affect its operation. A guard or other part that is 
damaged  should  be  properly  repaired  or 
replaced. 

16.  Provide  for  adequate  space  surrounding  work 

area and non-glare, overhead lighting. 

17.  Keep  the  floor  around  the  machine  clean  and 

free of scrap material, oil and grease. 

18.  Keep  visitors  a  safe  distance  from  the  work 

area. Keep children away. 

19.  Make your workshop child proof with padlocks, 

master switches or by removing starter keys. 

20.  Give  your  work  undivided  attention.  Looking 

around, carrying on a conversation and “horse-
play” are careless acts that can result in serious 
injury. 

21.  Maintain a balanced stance at all times so that 

you  do  not  fall  onto  moving  parts.  Do  not 
overreach  or  use  excessive  force  to  perform 
any machine operation. 

22.  Use the right tool at the correct speed and feed 

rate. Do not force a tool or attachment to do a 
job for which it was not designed. The right tool 
will do the job better and more safely. 

23.  Use  recommended  accessories;  improper 

accessories may be hazardous. 

24.  Maintain tools with care. Follow instructions for 

lubricating and changing accessories. 

25.  Turn  off  the  machine  before  cleaning.  Use  a 

brush to remove chips or debris — do not use 
bare hands. 

26.  Do  not  stand  on  the  machine.  Serious  injury 

could occur if the machine tips over. 

27.  Never  leave  the  machine  running  unattended. 

Turn  the  power  off  and  do  not  leave  the 
machine until it comes to a complete stop. 

28.  Remove  loose  items  and  unnecessary  work 

pieces  from  the  area  before  starting  the 
machine. 

29.  Disconnect  machine  from  power  source 

(unplug) before changing out roll sets. 

30.  Top  covers  must  be  properly  installed  before 

feeding workpiece. 

Summary of Contents for LF-20

Page 1: ...and Parts Manual 20 Ga Pittsburgh Lockformer Model LF 20 JET 427 New Sanford Road LaVergne Tennessee 37086 Part No M 756090 Ph 800 274 6848 Edition 2 05 2019 www jettools com Copyright 2016 JET This pdf document is bookmarked ...

Page 2: ...r maintenance purposes use extreme caution and replace the guards immediately after completion of maintenance 15 Check damaged parts Before further use of the machine a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function Check for alignment of moving parts binding of moving parts breakage of parts mounting and...

Page 3: ...t If there are questions or comments please contact your local supplier or JET JET can also be reached at our web site www jettools com Retain this manual for future reference If the machine transfers ownership the manual should accompany it Read and understand the entire contents of this manual before attempting assembly or operation Failure to comply may cause serious injury Register your produc...

Page 4: ... servicing 9 10 0 Replacement Parts 9 10 1 1 LF 20 Lockformer Exploded View 10 10 1 2 LF 20 Lockformer Parts List 11 10 2 1 LF 20 Upper Bracket Exploded View 12 10 2 2 LF 20 Upper Bracket Parts List 13 10 3 1 LF 20 Lower Bracket Exploded View 14 10 3 2 LF 20 Lower Bracket Parts List 15 10 4 1 LF 20 Optional Rollers Exploded View 16 10 4 2 LF 20 Optional Rollers Parts List 16 11 0 Electrical Connec...

Page 5: ...t min Minimum length of workpiece 7 in 178mm Main materials Cabinet steel Rolls hardened alloy steel Guide fences hardened steel Shafts hardened and ground steel with needle bearings Dimensions Height table from floor 819 mm 32 1 4 in Overall dimensions LxWxH 914 x 419 x 927 mm 36 x 16 1 2 x 36 1 2 in Shipping dimensions LxWxH 1075 x 510 x 1075 mm 42 5 16 x 20 x 42 5 16 in Weights Net 266 lb 120 6...

Page 6: ...r breakdown grounding provides a path of least resistance for electric current to reduce the risk of electric shock This tool is equipped with an electric cord having an equipment grounding conductor and a grounding plug The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances Do not modify the plug provided if it wil...

Page 7: ...1 Pittsburgh Lock Seam procedure This machine comes pre installed with a Pittsburgh lock roll set and requires only fence adjustment to proceed with this operation 1 Make sure workpiece is free of burrs or twist from snip cuts Twists or bent notches in material can strike and damage the knife edge roll that holds open the pocket of the Pittsburgh Lock Flatten such edges before feeding material 2 A...

Page 8: ... Figure 7 3 Tighten down both screws on entry fence 7 Reinstall rear top plate and top cover 8 Adjust exit fence as follows Run a test piece through and stop machine when workpiece has reached end of exit table but is still pinched between the rolls Move fence into position just flush or slightly clear of workpiece edge Exit fence must not bear against workpiece Tighten down fence 9 Start machine ...

Page 9: ...om entry fence tighten hold down bolt on entry side If material curls up after leaving forming head or shows extremely heavy pressure marks loosen hold down bolts or studs slightly 5 After adjustments lock setting of the bolts by tightening side screw X Figure 7 1 Lock setting of studs by tightening top nuts 9 0 User maintenance Before doing maintenance on the machine disconnect it from the electr...

Page 10: ...10 10 1 1 LF 20 Lockformer Exploded View ...

Page 11: ... Medium 3 8 8 18 TS 0680041 Flat Washer 3 8 8 19 TS 0060061 Hex Cap Screw 3 8 16x1 1 4 4 20 LF20 120 Guide Fence 4 21 LF20 121 Carriage Bolt 3 8 16x1 12 22 LF20 122 Cabinet Cover 2 23 F010967 Socket HD Flat Screw 1 4 20x1 2 4 24 LF20 124 Top Plate 2 25 F010752 Socket HD Flat Screw 3 8 16x1 4 26 LF20 126 Soft Pad 1 27 LF20 127 Female Thread Fitting 6xPT 1 8 6 28 LF20 128 Oil Fitting PT 1 8 6 29 LF2...

Page 12: ...12 10 2 1 LF 20 Upper Bracket Exploded View ...

Page 13: ...6 Die T6 1 7 6293358 Double Head Round Key 5 5 25L mm 5 8 LF20 208 Die T4 1 9 LF20 209 Die T3 1 10 TS 0070041 Hex Cap Screw 1 2 13x1 3 4 8 11 TS 0720111 Lock Washer Medium 1 2 8 12 LF20 212 Needle Bearing BA1412 10 13 LF20 213 Die T2 1 14 LF20 214 Die T1 1 15 LF20 215 Connecting Rod 2 16 LF20 216 Connecting Rod with Hole 2 17 LF20 217 Upper Rear Die Clamping Plate 1 18 TS 0680031 Flat Washer 5 16 ...

Page 14: ...14 10 3 1 LF 20 Lower Bracket Exploded View ...

Page 15: ...ng BA1212ZOH 6 18 LF20 318 Copper Adapter 6 PT 1 8 6 19 TS 0211051 Socket HD Cap Screw 1 2 13x1 1 20 LF20 320 Lower Front Die Clamping Plate 1 21 LF20 321 Spring 1 22 LF20 322 Disc 1 23 LF20 323 Pin 1 24 TS 0208061 Socket HD Cap Screw 5 16 18x1 1 25 TS 0561021 Hex Nut Full 5 16 18 1 26 LF20 326 Spur Gear 3 27 LF20 327 Die B 3 1 28 LF20 328 Spur Gear 1 29 LF20 329 Die Shaft B 3 1 30 LF20 330 Die B2...

Page 16: ...6 10 4 1 LF 20 Optional Rollers Exploded View 10 4 2 LF 20 Optional Rollers Parts List Index No Part No Description Size Qty 1 756092 Drive Cleat Rolls set of 10 1 2 756091 Double Seam Rolls set of 10 1 ...

Page 17: ...17 11 0 Electrical Connections for LF 20 ...

Page 18: ...itional action needed JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website More Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How State Law App...

Page 19: ...19 This page intentionally left blank ...

Page 20: ...20 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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