Schweiss Bifold Doors
button link to FAQ'sbutton link to Why SchweissNote from the owner of Schweiss Bi-fold Doors

BOTTOM DRIVE - STRAPS

Bi-Fold Door Drive Units

Bottom Drive Power Units

• The power unit is mounted on the door frame.

• The bottom drive power unit is fully assembled on the door frame at the factory

• The bottom drive requires less installation time - a real time saver

• The bottom drive does not take up any extra room, it's mounted on the door frame.

• The bottom drive is easy to get to for the service end.

• The bottom drive power unit is built heavy with some very nice features.

• 80% of the doors manufactured by Schweiss Customers are demanding the popular "New Lift
Straps"

A. Tube

B. Tube

C. Tube

D. Tube

1. Manual Side Latch 16 Kick Outs Upgrade Features
2. Bottom Truss 17. Kick Out Plates Upgrade Equipment:
3. Bearing Plates 18. Insulation (Blanket Type) Yes No  
4. Strap Drums 19. Exterior Sheeting checkbox checkbox 1 - Top Override Jiggle Switches
5. Drive Shaft 20. Single Hinge checkbox checkbox 2 - Side Latch Jiggle Switches
6. Center Wind Pin 21. Top Hinges checkbox checkbox 3 - Electric Photo Eye Sensor
7. Bottom Drive Electric Power Unit 22. Top Height Half checkbox checkbox 4 - 2 Button Constant Hold Control
4 - Station
8. Safety Limit Switch 23. Bottom Height Half checkbox checkbox 5 -Door Base Safety Edge
9. Walk Door 24. Top Center Cross Tube checkbox checkbox 6 - Warning Lights and Horn
10. Building Side Columns 25. Bottom Center Cross Tube checkbox checkbox 7 - Emergency Back-Up
11. 3" Bottom Door Roller 26.. Bottom Rubber      
12. Up/Down/Stop Switch 26a. Motor Shield      
13. Lift Straps 27. Top Rubber (Optional)      
14. Strap Tightener 28. Safety Shields Included      
15. Center Hinges          

BOTTOM DRIVE - CABLES

Bi-Fold Door Drive Units

Electric Power Operator: Bottom Drive - Cables

Bi-Fold Door Drive Units

The gear motor is equipped with an electric brake to stop and hold door in any position of door travel. Electric operator is pre-wired and fully assembled. The motor and gear box and all
necessary hardware are included. All drive bearings come standard with grease fittings. Our
heavy duty components ensure you many years of use. Standard Bottom drive assembly can
be easily inspected and maintained.

TOP DRIVE

Bi-Fold Door Top Drive Unit Placement

Top Drive Power Units

• The power unit is mounted stationary, up and above your clear opening.

• The power unit is located in the center of your clear opening.

• The location of the top power unit will not affect your clear opening.

• The nice part about a top drive unit - it's up and out of the way.

• The top drive power unit must be installed on the job (good instructions).

• The top drive power unit is built heavy duty with some very nice features.

A. Tube

B. Tube

C. Tube

D. Tube

1. Manual Side Latch 14. Center WInd Pins Upgrade Features
1a. Safety Latch 15. Bottom Truss Upgrade Equipment:
1b. Top Override Switch 16. Gussets Yes No  
2. Safety Limit Switch 17 Cable Clamps & Slides checkbox checkbox 1 - Top Override Jiggle Switches
3. Schweiss Electric Power Unit 18. Walk Door checkbox checkbox 2 - Side Latch Jiggle Switches
4. Top Hinges 19. Building Side Columns checkbox checkbox 3 - Electric Photo Eye Sensor
5. SIngle Hinge 20. 3" Bottom Door Roller checkbox checkbox 4 - 2 Button Constant Hold Control
4 - Station
6. Cable Pulley Angles 21. Top Height Half checkbox checkbox 5 -Door Base Safety Edge
7. Aircraft Cables 22. Bottom Height Half checkbox checkbox 6 - Warning Lights and Horn
8. Center Hinges 23. Top Center Cross Tube checkbox checkbox 7 - Emergency Back-Up
9. Exterior Sheeting 24. Bottom Center Cross Tube      
10. Insulation 25. Bottom Rubber      
11. Kick Outs 25a. Bottom Safety Edge      
12. Kick Out Plates 26.. Top Rubber (Optional)      
13. Up/Down/Stop Switch          

TOP DRIVE

Bi-Fold Door Drive Units

Power Unit
Cable Drum

Electric
Limit Switch

Top Drive
Power Unit

Side View

Floor Level

Building Header

Header Bolt

Single Hinge

Bi-Fold Door

Building
Side Column

TOP DRIVE

Bi-Fold Door Drive Units

Cable B

Cable D

Bi-Fold Door Header

Pulley Angle ( F )
Brackets

Left Side
Inside of Bldg.

( H ) Distance Of 7"-8" From Center
Of Header To Center Of Cable
Drum

Pulley Angle Brackets

Cable A

Cable C

( E ) Extra
Bracing

Top Drive
Power Unit

Right Side
Inside of Bldg.

Top drives are up and out of the way -
This is very important for certain applications.
Your Choice!! Bottom drive or Top drive, No extra cost!

TOP DRIVE POWER UNIT

Bi-Fold Door Top Drive Unit
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