Inside Sales and Customer Service¶
This path is for you if you enter orders, prepare quotes or answer customer calls, and your job is to turn a request into an order line that is complete and consistent. It teaches you to read a Twin City Fan model code and performance table, to write arrangement, rotation, discharge and motor position correctly, and to check a full fan description before it goes to the plant.
You do not need the physics of impeller design or sound for this work, so the path skips or skims those chapters. Follow the checklist in order: the early chapters give you the vocabulary that the catalog and order-entry chapters rely on.
Your Path at a Glance¶
| Target concepts | 13 |
| Concepts on the path (targets plus all their prerequisites) | 116 of 581 |
| Chapters | 7 read, 11 skim, 9 skip |
| Reading time | about 8 h 05 min |
| MicroSims and diagrams to try | 11 (about 1 h 55 min) |
| Quiz questions | 101 (about 1 h 41 min) |
| Total | about 11 h 41 min |
Reading time assumes 200 words per minute, a pace for technical prose with worked examples and tables, applied to each chapter's word count (whole chapter for read, the listed sections plus Key Takeaways for skim). Sim time comes from each sim's stated duration; quizzes are counted at 1 minute per question.
Reading Checklist¶
Work down the table in order. Read means the whole chapter; skim means only the sections listed, then the chapter's Key Takeaways; skip chapters are not needed for this path. Sections in bold teach one of this path's target concepts, so read them closely. A section marked (opening) is the text under that heading before its first subsection.
MicroSims and Diagrams to Try¶
These sims sit in the sections that teach this path's target concepts. Run each one until you can get the challenge right without the hints.
Also useful (in chapters you read, practicing prerequisite concepts): Anatomy of a Fan Duty Statement (Ch. 1); Air Density Ratio Explorer (Ch. 1); Airstream Classifier (Ch. 1); Follow the Airflow Through a Centrifugal Fan (Ch. 3); Exploded View of a Belt-Driven Centrifugal Fan (Ch. 3); Belt Drive Speed Calculator (Ch. 11); Discharge Position Explorer (Ch. 12); Motor Enclosure Selector (Ch. 14).
Quizzes¶
Take the full quiz for every chapter you read. For skimmed chapters, answer only the questions that test concepts on this path.
| Chapter | Questions |
|---|---|
| 1. Air, Pressure and the Fan | All 10 questions |
| 2. Airstreams, Total Pressure and Standard Air | 2, 7, 8, 9 |
| 3. Basic Fan Anatomy | All 10 questions |
| 4. Centrifugal, Axial and Mixed Flow Fans | 1, 5, 6, 9 |
| 5. Roof, Wall and Specialty Exhaust Fans | 3 |
| 6. Industrial Fans and Application Product Lines | 1, 3 |
| 10. Fan Performance, Curves and Ratings | 1, 2, 9 |
| 11. Drives and Standard Fan Arrangements | All 10 questions |
| 12. Discharge Positions and Rotation | All 10 questions |
| 13. Rotation and Discharge Codes | All 10 questions |
| 14. Fan Motors and Enclosures | All 10 questions |
| 15. Motor Ratings, Speed Control and Positioners | 1, 5, 6, 9, 10 |
| 18. Inlets, Outlets and Flow Control | 4, 8, 9 |
| 20. Construction Classes, Materials and Spark Resistance | 3, 7, 8 |
| 24. Advanced Arrangements and Configuration Variants | 1, 8 |
| 25. Fan Laws, System Effect and Sound | 5 |
| 26. Reading Catalogs and Performance Tables | All 10 questions |
| 27. Fan Selection and Writing the Specification | 4, 6, 8 |
Target Concepts¶
These are the concepts that define the job outcome for this path. Everything else on the path is a prerequisite of one of them in the learning graph.
| Concept | Taught in | Why it is on this path |
|---|---|---|
| Model Code | Ch. 26: Model Code | Remember: name an example product line for each family; every order line starts from a catalog model code. |
| Fan Size | Ch. 26: Fan Size | Analyze: break down a full fan description (type, size, arrangement ...) into its parts. |
| Catalog Structure | Ch. 26: Catalog Structure | Topic 14: reading a current Twin City Fan catalog. |
| Reading a Performance Table | Ch. 26: Reading a Performance Table | Apply: read a current catalog performance table to find the RPM and brake horsepower for a required airflow and static pressure. |
| Catalog Operating Limits | Ch. 26: Catalog Operating Limits | Analyze: check that the parts of a description are consistent; a size, class and speed outside the catalog limits is not orderable. |
| FanPedia vs Current Catalog | Ch. 26: FanPedia Versus the Current Catalog | Analyze: distinguish FanPedia guidance from current catalog data and identify which source governs. |
| Fan Arrangement | Ch. 11: The Fan Arrangement (opening) | Remember: recall the standard arrangement numbers and which are direct drive and which belt drive. |
| Rotation and Discharge Code | Ch. 13: Rotation and Discharge Code (opening) | Apply: write the complete rotation and discharge designation for a fan shown in a drawing. |
| Motor Position Restrictions | Ch. 13: Motor Position Restrictions | Apply: determine which motor positions are allowed for a given discharge. |
| Motor Nameplate | Ch. 14: The Motor Nameplate | Topic 7 (drive train components): the motor horsepower, enclosure, voltage and phase on an order come from nameplate data. |
| Construction Class | Ch. 20: Construction Class: Matching the Fan to Its Airstream | Analyze: the construction class is one of the fields of a full fan description. |
| Product Options | Ch. 26: Product Options | Remember: list common fan accessories (dampers, inlet boxes, drains, shaft seals, isolation bases). |
| Complete Fan Description | Ch. 27: Complete Fan Description | Analyze: break down a full fan description into type, size, arrangement, rotation, discharge, motor position, construction class and accessories, and check that they are consistent. |
When You Finish¶
Test your eye for a bad order line: run the Specification Error Detector, which asks you to mark each clause of a draft dryer exhaust fan specification acceptable or defective and say why. When customers start asking which product fits their job, continue with the Outside Sales and Manufacturer's Representatives path; the chapters you have already read are marked there too.