KRB 11 Radius Bender User manual

#11 Radius Bender
#11 Radius Bender
MANUAL

#11 Radius Bender
www.krbmachinery.com
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V1.12.09.21
This owner’s manual is compiled from the latest specifications and product information available at the
time of publication. We reserve the right to make changes as they become necessary. Any changes to
our products may cause slight variations between the illustrations and explanations in this manual and
the product you have purchased.
COPYRIGHT ©2022 KRB MACHINERY

#11 Radius Bender
#11 Radius Bender
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Table of Contents
Warranty........................................................................................................................................................3
Safety ............................................................................................................................................................ 4
Read And Understand This Manual ..........................................................................................................5
Machine Operation Hazards...................................................................................................................... 6
Machine Installation.......................................................................................................................................7
Locating And Anchoring The Machine....................................................................................................... 7
Electric ...................................................................................................................................................... 8
#11 Radius Bender – Proximity Switch Assembly Instruction ................................................................... 9
Operation..................................................................................................................................................... 10
General Description ................................................................................................................................ 10
Machine Controls .................................................................................................................................... 12
Machine Operation.................................................................................................................................. 13
#11 Radius Bender Minimum Diameters Capacity.................................................................................. 15
Controller Set Up And Operation ................................................................................................................. 16
Homing Instructions ................................................................................................................................ 17
Main Operation Screen ........................................................................................................................... 18
Stored Setup Screen............................................................................................................................... 19
Controller Configuration Screen .............................................................................................................. 20
How To Accomplish Multiple-Radii On A Bar .......................................................................................... 21
Preventive Maintenance And Servicing ....................................................................................................... 22
Electrical Replacement Parts....................................................................................................................... 38
Mechanical Replacement Parts ................................................................................................................... 41
Manual Revisions By Date........................................................................................................................... 55

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V1.12.09.21
WARRANTY
KRB Machinery Corporation (“KRB”) warrants to ____________________________ (“buyer”), for its
#11 Radius Bender, Serial Number ___________________.
The warranty starts from the receipt of goods and is valid for 13 months or 2,000 working hours, whichever
occurs first.
• The warranty only covers the replacement of defective components.
• The original component must be returned to KRB within 30 days of notice to KRB regarding
defective component.
• The warranty does not cover components that are unusable due to normal wear.
• The warranty does not cover components damaged by improper use or lack of maintenance.
• The warranty does not cover electronic components (ie: controls, boards, drives, etc.) on
machinery connected to generators unless machinery is protected at its power source by a power
conditioner.
• KRB DISCLAIMS ALL OTHER WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY AND
SPECIFICALLY DISCLAIMS ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.
KRB shall not be liable to the Buyer for any failure to perform any obligations due to causes which are
beyond its reasonable control.
KRB is not responsible, under any circumstances whatsoever, for buyer's lost or anticipated profits,
diminution of goodwill, loss of use, incidental, special, or consequential damages in regard to purchasing
and using KRB equipment.
Contact Information
–
KRB Machinery Co.
1058 Cool Creek Road
Wrightsville, PA USA 17368
717-252-3667
1-800-367-5727

#11 Radius Bender
#11 Radius Bender
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V1.12.09.21
SAFETY
This operator’s manual is for a #11 Radius Bender.
Read this manual before setup and operating the machine.
The safety information in this manual is denoted by the safety alert symbol: ^
The level of risk is indicated by the following signal words:
DANGER – Indicates a hazardous situation, which, if not avoided, will result in death or
serious injury.
WARNING – Indicates a hazardous situation, which, if not avoided, could result in death or
serious injury.
CAUTION – Indicates a hazardous situation, which, if not avoided, could result in minor or
moderate injury.
NOTICE – Indicates a situation that could result in damage to the machine or other property.
^ DANGER
^ WARNING
^ CAUTION
NOTICE

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Read and Understand This Manual
Carefully read and understand this manual and all safety signs on the machine before operating the
machine. Safety signs must be in good condition and legible at all times. Replace missing or damaged
safety signs.
Never allow anyone to operate this machine without proper instruction, while fatigued or under the influence
of alcohol, prescription or non-prescription medication.
Keep your machine in proper working condition. Modifications to the machine may impair the function
and/or safety and affect the machine life and warranty.
If you do not understand any part of this manual, contact KRB Machinery.
Read All Instructions
1. Read Operators Manual before operating equipment.
2. Do not operate machine unless you are fully qualified, and properly trained.
3. Do not work on machine unless disconnect switch is turned off. Pad lock disconnect switch to avoid
unwanted start-up.
4. All bolts must be tight before machine is operated.
5. Do not operate machine with any guards or covers removed or open.
6. Always wear protective gear when operating machine i.e.: safety glasses, hard hat, steel tip shoes,
gloves, arm sleeves, etc.
7. Do not insert body parts into any part of equipment while it is running, or power is turned on.
8. Do not make any adjustments on equipment while machine is turned on or running.
9. Always stay alert while operating equipment.
10. Do not operate equipment in or around water i.e.: puddles, rain, etc.
11. Only qualified technicians should work on equipment.
12. Make sure all local and state codes are met with your electrical installation.
13. Keep area clean from debris at all times.
14. Equipment must be properly secured to floor.
15. Work stations and unauthorized people should remain a safe distance from the machine at all times.

#11 Radius Bender
#11 Radius Bender
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Machine Operation Hazards
Pinching or Severing Hazard
Keep hands away from pinch points while operating this machine.
•Pinching hazard.
•The rollers may pinch or sever fingers.
•Keep away from rollers.
Safety Devices
Never override any safety device on this machine. Overriding a safety device may cause the machine to
operate unintentionally and uncontrollable, which may result in injury or death.
•Prevent serious injury or death.
•Never override safety devices on this machine.
Wear Appropriate Clothing
Wear close fitting clothing. Do not wear a neck tie, scarf, jewelry or necklace while operating this machine.
These items may get caught in the machine, resulting in injury or death.
Do Not Touch Bar
Do not touch bar while machine is in operation.
•Pinching and severing hazard.
•Do not touch bar while machine is in operation.
Maintenance
•Improper disposal of waste can harm the environment.
•Use leak proof container when draining fluids. Do not use food or beverage
containers.
Contact your local environmental or recycling center for the proper way to recycle or dispose of waste.
^ WARNING
^ WARNING
^ WARNING
NOTICE

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MACHINE INSTALLATION
Locating and Anchoring the Machine
Approximate Weight:
1. Locate machine on level concrete floor with ample space to radius bars, and for production
storage. A minimum 5”-6” thick concrete floor is adequate to support the machine.
2. The manufacturer recommends bolting the machine to the floor in order to maintain its position.
Usually (4) ½” x 4” long anchor bolts will be adequate.
Anchor Bolt Locations
4,014
lbs. (1,821 kg).

#11 Radius Bender
#11 Radius Bender
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Electric
3. Be sure all wiring is done by a qualified electrician and conforms to local codes and specification.
Electrical requirements: 460VAC, 3 PHASE, 60HZ, 20 AMPERES
4. Connect the main disconnect (furnished) to the proper power supply (as noted in Part II above).
Before finalizing connections, verify the correct rotation of the drive rolls by setting drive roll
selector switch in forward and pressing the foot pedal. Rotation should be clockwise to feed
material right to left.
^ WARNING

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#11 Radius Bender – Proximity Switch Assembly Instruction
For Use at assembly for field retrofit Revised October 2, 2001
1. Pre-assemble the proximity switch to the mounting bracket. Be careful to locate it in the center of
the elongated slot.
2. Turn the machine on and using the manual control, move the bend roll out to allow for the easy
insertion of an approximate 3 foot length of 1 ½” diameter steel rod.
3. Note: It may be necessary to slightly readjust the forward over-travel micro-switch located on the
right forward side.
4. Place the 1 ½” diameter bar between the two drive rolls and the bend roll. This should be fairly
loose and easy to accomplish. Be sure all areas are clean and free of rust or scale build-up.
5. Carefully, using the manual control, adjust the bend roll in so that it barely touches the 1 ½” bar.
You should be able to turn the bar but not pull it in or out. (Turning the bar at this point proves that
the bar is straight – this is very important.)
6. Locate the pre-assembled bracket and proximity switch along the left side slide guide so that the
center of the switch top is centered on the small ¼” thick tab. Note: It may be necessary to adjust
the switch in or out slightly on the bracket to avoid contacting the tab. The bracket must be
positioned both vertically and horizontally along the slide guide.
7. Clamp the bracket in place.
8. Remove the Proximity switch to avoid damage during the welding.
9. Weld the bracket to the slide guide.
10. Remove the 1 ½” bar.
11. Touch up paint as required.
12. Reassembly the Proximity switch to the bracket.
13. Readjust the right side over-travel micro-switch if necessary.
14. Connect Proximity switch leads.
15. Adjust the location of the proximity switch in the elongated slot. Set it all the way out and slowly
move it in until the yellow led comes on. Tighten the adjusting screw. Don’t move the bend roller at all
from its setting in Step #5.