Paper Machine Vacuum Systems

SKU: C-742Duration: 23 Minutes

Pay-per-view (PPV) format perfect for individual users.

Get immediate access to this interactive eLearning course online. Must be used within 30 days, expires 48 hours after launch.


Great for trainers or groups who need unlimited online access to multiple courses. Available in two ways:

Paper Machine Auxiliary Systems Series (Details)
Includes 8 courses for $299/year.

Paper Library (Details)
Includes 92 courses for $1,499/year.

Ideal for corporate licensing and high volume users.

Get Convergence courses into your current LMS to track and report employee training. Or contact us to learn more about the advantages of licensing our courses with the Convergence LMS.

Course Details


Training Time: 23 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English, Portuguese, French, Polish, Russian

Vacuum systems on paper and board machines dewater the stock as the sheet forms, dewater and clean the press felts, which, in turn, remove water from the sheet, and helps transfer the sheet between sections of the machine. This module describes the main functions of vacuum systems on paper and board machines, the safety hazards and safety guidelines associated with vacuum systems, and the equipment that can be used to produce vacuum.

Learning Objectives

At the end of this module, you will be able to:

  • Describe the main functions of vacuum systems on paper and board machines
  • Identify and describe the safety hazards and safety guidelines associated with vacuum systems
  • Describe the equipment that can be used to produce vacuum
  • Describe the vacuum devices used on paper and board machines
  • Explain why vacuum pump seal water must be cool
  • Describe how vacuum levels are controlled in paper and board machine vacuum systems

Key Questions

The following key questions are answered in this module:

How is vacuum used in the forming section of a paper or board machine?
In the forming section, vacuum is used at vacuum foil boxes and flat boxes to remove water from the stock

Why are vacuum levels usually stair-stepped (gradually increased) in the forming section?
Vacuum is increased because the water becomes harder and harder to remove as the sheet forms, and also to prevent the sheet from sealing early on, which makes it harder to remove the remaining water

Where is vacuum used in the press section of a paper or board machine?
In uhle boxes to remove water and debris from the press felts, and in suction rolls for multiple reasons, including sheet transfer, pulling in steam, and preventing sheet flutter

What devices are used to produce vacuum on paper and board machines?
Liquid-ring vacuum pumps, centrifugal blowers, and steam ejectors

How do bleed valves work in vacuum systems?
Bleed valves work by letting in air to reduce the vacuum level (or increase the pressure). They are opened to lower vacuum levels and closed to increase vacuum levels.

Sample Video Transcript

Below is a transcript of the video sample provided for this module:

Vacuum systems perform three main functions on paper and board machines. In the forming section, vacuum is used to help de-water the stock as the sheet forms. In the press section, vacuum is used to de-water and clean the press felts, which in turn remove water from the sheet. And, at several locations, vacuum is used to help transfer the sheet between sections. In addition to these functions, the vacuum system also helps recover water for reuse in the paper or board making process.

Customer Q&A

I would like to have several employees take multiple courses. How can I set that up?

We're in the process of making bulk course and multiple user purchases easier. But for now, you can order multiple courses and contact us with details on who you'd like to assign courses to. We can set up each user's training plan and make sure everyone gets the eLearning assignments they need.

Can I get a free full-length preview of a course to see what this course covers?

While we do our best to offer details on course contents, we don't normally offer full-length previews. But please contact us with more details for a better understanding of what your organizaton needs and how we can help.

Do I get a certificate when I complete a course?

Yes. All of our courses allow you to print a completion certficate upon successfully passing the integrated test at the end of each eLearning course.

How do I log in to take a course that I have already paid for?

You'll receive an email with login details moments after you purchase your pay-per-view (PPV) course. Just click the login link and enter the user name and password provided.

Do you have courses in different languages?

Yes. While all of our courses are originally produced in English, we develop many courses in a growing number of languages, including Chinese, Dutch, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Tamil, and Thai. Available languages are normally displayed in the Course Details section on each course page.
Added to Cart! Click here to view your cart.