At the end of this module, you will be able to:
- Describe the purpose of carrier ropes on a paper machine
- Identify the major components of a safe and efficient carrier rope system
- Describe routine inspections for a carrier rope system
- Describe the precautions and techniques for rope cleaning
- List in order the steps for rope replacement
- List in order the steps for putting a rope back on a sheave
- List in order the steps for dealing with sheave failure
- Describe some of the actions which should be performed on the system during a shutdown
The following key questions are answered in this module:
How often should carrier ropes and rope runs be inspected?
The condition of the ropes and rope runs should be checked on all levels every few hours.
What should be done during these regular inspections?
Remove broke or debris that is safe to remove during this check. Also look for problems such as wobbling or slow moving sheaves, and listen for squealing and clattering which could indicate bearing problems.
What is the safest technique for pulling loose tail from a rope run?
Pull tails from rope runs upstream at about a 45° angle. If your grip on the tail is lost, this ensures that the ropes will pull the tail away from you, not toward you. And don't grip the tail too tightly, as you may need to release it quickly if it gets pulled in.
When preparing to replace a rope, why is it a good idea to leave the old rope in place until the new rope is ready?
The new rope can be tied to the old rope, and the old rope can be used to thread the new rope correctly through the rope run.
If a rope does break and come off the machine, what tools can be used to help thread a new rope through the rope run?
A magnet, magnetic belt, or rubber hose can be used to thread the rope around the dryer cans or from dryer felt nip to dryer felt nip.
Below is a transcript of the video sample provided for this module:
Prior to removing broke from a rope system, examine and evaluate the rope runs for possible problems and outcomes. Check for wads of broke that could come loose and consider where they will end up. Ropes that could come off sheaves if the tail or piece of broke is pulled and damaged ropes that may fail. Do not reach into obstructed or nonviewable locations to remove broke and debris from rope runs. Always know where your hands or tools are going when cleaning rope runs.
Use the additional resources and links below to learn more about this topic: