Some circuit diagrams (especially in chapters on reduced-voltage starting, braking, and sequencing) contain:
Fix – Check the publisher’s (American Technical Publishers – ATP) website for official errata sheets. They have released corrections for specific figure numbers (e.g., Fig. 8-12, Fig. 11-7) in past print runs. If your book lacks a revision code on the copyright page, contact ATP support for a PDF of corrections.
The Problem: The schematics in Chapter 9 (Timing Relays) look identical except for a tiny arrow direction. You wire it perfectly, but the motor doesn't sequence correctly.
The Fix: The "Wrench Method."
The immediate fix for your lab: If the motor starts instantly when it shouldn't, you probably used an On-Delay instead of an Off-Delay (or vice versa). Swap the timer module.
Cause: ATP uses Flash-based (deprecated) or JavaScript-restricted content. The Fix: