Kohler MMT, MNT Automatic Transfer Switches Operation and Installation Manual (tp5973)

These Kohler MMT/MNT automatic transfer switches sit between your utility power and generator, usually in commercial buildings, farms, or light industrial sites where downtime costs money. This manual is what I’d keep nearby when I’m installing a new switch, verifying wiring during commissioning, or chasing down why the load isn’t transferring cleanly after an outage. For example, if the switch hesitates or fails to retransfer to utility after power is restored, I’d use this book to trace control circuits, verify settings, and confirm the operating sequence is correct.

Applications & Use Cases

• Plan and install a new MMT/MNT ATS so line, load, and generator conductors are routed and terminated correctly.
• Check operating logic when the switch doesn’t transfer or retransfer as expected after a power failure.
• Verify field connections before energizing, reducing the risk of misphased or loose terminations.
• Adjust and test control features so the switch coordinates properly with the generator set and building load.
• Identify parts and wiring during repairs, helping you match components and trace circuits accurately.

FAQ

Q: Can I keep a digital copy of this manual on a tablet in the field?

A: Yes, it’s practical to use digitally; you can zoom diagrams and search text while working at the panel.

Q: Is it worth printing sections of this manual for a job?

A: Printing key pages like wiring diagrams and setup procedures is handy when you’re in a noisy or dirty room.

Safety Note

Always isolate all power sources and verify they’re de-energized before opening or working inside the transfer switch.