Frequently Asked Questions

• What are Wurtec rail blocks primarily used for? Wurtec rail blocks are designed to be quickly installed onto elevator rails and used for various purposes including lifting loads, building elevator cars, providing a secure resting point for car or counterweight frames, and holding support beams during platform construction. They are versatile tools for lifting and securing in the hoistway.
• Who is authorized to install and use Wurtec rail blocks? Only qualified personnel who have been properly trained in work and safety procedures should install, use, and service Wurtec rail blocks. This manual serves as a guide for trained individuals, not as a substitute for proper training and experience.
• What are the key safety precautions to observe when using rail blocks? Several critical safety measures must be followed to prevent serious injury or death. These include:
  • Ensuring proper installation and adherence to guidelines in the manual.
  • Verifying the rail block type and capacity using the specification table before installation.
  • Always using rail blocks in pairs.
  • Tightening all set screws to the prescribed torque (70 ft-lbs for 5/8” bolts, 250 ft-lbs for 1” bolts).
  • Inspecting the rail block, shackle, and set screws before use and replacing worn or damaged parts.
  • Replacing set screws after each use.
  • Using only hardware included with the rail block and not substituting alternate hardware.
  • Ensuring the hoistway is clear before starting installation.
  • Confirming the back of the rail block is flush with the rail and the shackle is loaded within 15 degrees of vertical.
• How do you correctly install a Wurtec rail block? Installation involves three main steps:
  1. Mounting: loosen all set screws, check the directional tag, and push the rail block onto the rail with the clevis side down, ensuring it is flush with the rail.
  2. Centering: center the rail block on the rail and hand-tighten the set screws until they contact the rail.
  3: Securing: use a torque wrench to tighten all six set screws to the specified torque (70 ft-lbs for 5/8” bolts or 250 ft-lbs for 1” bolts), then re-torque to ensure proper function.
• What is the importance of using a torque wrench? Using a torque wrench is critical to ensure proper functioning and safety of the rail block. The set screws must be tightened to the precise torque (70 ft-lbs or 250 ft-lbs, depending on the bolt size) to properly secure the rail block. Inadequate or excessive torque could cause the rail block to fail.
• What daily checks and maintenance are required for rail blocks? Daily checks are essential to maintain the safety and reliability of the rail blocks. These include:
  • Marking the rail at the base of the installed block to monitor any slippage.
  • Verifying the block remains flush with the rail after daily use.
  • Confirming the set screws are tight.
  • Checking all hardware before each use and replacing worn or damaged parts.
  • Ensuring set screws are sharp and intact and replacing them regularly.
• What is the correct way to load the shackle, and what are the risks of incorrect loading? The shackle must be loaded with the load applied within 15 degrees of true vertical, with the shackle hanging downwards in the hoistway. Loads applied at angles greater than 15 degrees can lead to rail block failure and create an unsafe working environment.
• Where can I obtain replacement parts for Wurtec rail blocks? For replacement parts, specifically set screws, contact Wurtec customer service at 1-800-837-1066. It is critical to use only Wurtec-approved hardware.

  Always discard and replace set screws after each use!