Isolator Mounting Methods¶

Run the Isolator Mounting Methods MicroSim Fullscreen

About This MicroSim¶

This MicroSim marks five numbered zones on FanPedia's vibration isolation mounting drawings (page 133), one for each of the five isolator mounting methods. The top row shows isolators directly under the fan, isolation rails (in two versions, one on rubber-in-shear pads and one on springs, sharing one zone) and a mounting angle. The bottom row shows an isolation base carrying the fan and motor, and a fan hung from isolation hangers. The isolators and the hanger rods are drawn in green; the rails, the angle and the base in purple. The names sit in a numbered list under the drawing.

The quiz describes one mounting at a time ("Which drawing suspends the fan from structure overhead?") in a shuffled order, and you select the matching zone. You get two attempts per prompt. The first wrong answer shows a hint about where to look; the second reveals the drawing and counts as missed. Mastery is 4 of 5 correct on the first attempt. Explore mode is never scored.

How to Use¶

Explore mode (the starting mode). Point at a numbered zone, or Tab to it, to see its name, a one-line summary and the key facts in the panel below. Click it (or press Enter) to open it; opened drawings get a ✓ in the name list and the counter shows how many of the 5 you have visited.
Quiz mode. Press Quiz. The names disappear and a prompt describes one mounting:
- Correct: "✓ Correct:" with the name and summary; the zone gets a green solid border and a ✓ badge.
- Wrong on the first attempt: "✗ Not quite.", the name of the drawing you picked, and a hint that never names the answer.
- Wrong on the second attempt: the answer is marked "Answer" and named, and the prompt counts as missed.
Press Next prompt after each answer. The toolbar shows "Drawings correct: n of 5".
After the fifth prompt, the summary shows your first-attempt score, whether you reached mastery (4 of 5), and each missed prompt with its answer. Retry missed practises the misses (not scored), Start over reshuffles and resets the score, and Back to explore returns to the names.

Keyboard: Tab moves through the zones in number order and then the buttons; Enter or Space selects a zone. After an answer, focus moves to Next prompt, so Enter goes on.

Data label: "Drawing: FanPedia, Twin City Fan, p. 133", shown under the drawing.

Iframe Embed Code¶

You can add this MicroSim to any web page by adding this to your HTML:

<iframe src="https://moroshek.github.io/FanTASTIC-textbook/sims/ch22-isolator-mounting-overlay/main.html"
        height="826px"
        width="100%"
        scrolling="no"></iframe>

Lesson Plan¶

Learning Objective¶

The learner will identify the five isolator mounting methods (directly under the fan, isolation rails, mounting angle, isolation base and isolation hangers) on FanPedia's drawings, given a description of each (Bloom: Remember, verb: identify).

Audience¶

Adult professional development: new application engineers, sales staff, representatives and facilities staff.

Duration¶

10 minutes

Prerequisites¶

Chapter 22, sections "Vibration Isolation", "Neoprene Isolation Pads", "Rubber-in-Shear Isolators" and "Isolator Mounting Methods".
Chapter 22, "Isolation Base", for the base itself.

Activities¶

Explore (3 min): Open all five drawings. For each, say what sits between the fan's foundation holes and the isolators: nothing, a pair of flat bars, an angle or a structural base; and for the hung fan, where the isolators are.
Quiz (4 min): Switch to quiz mode and match all five descriptions without going back to explore mode.
Review (3 min): Read the missed list, open those drawings in explore mode, then press Start over for a new order.

Common Misconceptions Addressed¶

Isolators can always go directly under any fan: FanPedia says this is usually limited to impellers 36.5 in in diameter or less, with swingout housed centrifugal fans of any size as the exception, on flat pads only.
Isolation rails and an isolation base are the same thing: rails are two flat bars, the top one bolted to the fan's foundation holes and the bottom one to the floor; a base is a structural frame that can carry the motor and other components too.
A mounting angle is only for looks: it is usually used when the fan inlet has no structural support of its own.

Assessment¶

First-attempt score shown in the summary as "First-attempt score: n of 5"; mastery is 4 of 5 on the first attempt.
Pointing at zones and opening infoboxes in explore mode is exploration, not evidence.
Follow-up question: a housed centrifugal fan (not a swingout) with an impeller larger than 36.5 in must be isolated on a floor. Which method is usually ruled out, and which drawings show the floor-mounted alternatives?

References¶

FanPedia: The Fan & Blower Encyclopedia (PDF) - Twin City Fan; p. 133 holds the vibration isolation mounting drawings used here and the description of each method.
FanPedia online - Twin City Fan's online version of the encyclopedia.
Chapter 22: Fan Bases and Vibration Isolation - the section "Isolator Mounting Methods", where this MicroSim is embedded.
Chapter 23: Spring Isolators, Restraints and Field Measurement - the section "Where the Isolators Go", which works through each method's hardware.
Isolation Hardware Sorter - sorts job descriptions into isolation hardware, including four of these mounting styles.