Format: PDF (Printable Document)
File Language: English
File Pages: 154
File Size: 1.82 MB (Speed Download Link)
Brand: Kohler
Model: M340+ Automatic Transfer Switches
Book No: tp5672
Type of Document: Service and Parts Manual
$ 40
These Kohler M340+ automatic transfer switches usually sit in plant rooms or electrical closets, quietly handling the swap between utility and generator power. This manual is what I’d keep on the bench when I’ve got a switch open and need to match every contactor, relay, harness, and bracket to the right part number before ordering. If, for example, a transfer fails and I find a burned terminal block or a damaged sensing board, this book lets me trace how that piece ties into the rest of the assembly and pick the exact replacement instead of guessing.
Applications & Use Cases
FAQ
Q: Can I use this manual on a tablet at the jobsite?
A: Yes, it’s practical to keep a digital copy; you can zoom in on diagrams and search part designations while standing at the switchboard.
Q: Should I still print pages from it?
A: Printing the relevant parts sheets for a specific job helps you mark items, note quantities, and keep everything straight during teardown and reassembly.
Safety Note
Always isolate and verify all power sources are de-energized before opening or servicing any automatic transfer switch.
SUBJECT PAGE SUBJECT PAGE
Safety Precautions and Instructions . . . . . . . . . . . I
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
List of Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . i
Service Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Section 1. Specifications . . . . . . . . . . . . . . . . . . . 1-1
Purpose of Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Components of Switch . . . . . . . . . . . . . . . . . . . . . . . 1-1
Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Interpreting a Transfer Switch Part Number . . . . . 1-3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Standard Features . . . . . . . . . . . . . . . . . . . . . . . 1-4
Shunt-Jumper-Controlled Accessories . . . . . . 1-5
Optional Features . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Section 2. Operation . . . . . . . . . . . . . . . . . . . . . . . 2-1
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Control Switches and Indicators . . . . . . . . . . . . . . . 2-2
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . 2-3
Normal Source Failure . . . . . . . . . . . . . . . . . . . . 2-3
Normal Source Restoration . . . . . . . . . . . . . . . 2-4
Sequence of Operation Programmed Transition . 2-6
Normal Source Failure . . . . . . . . . . . . . . . . . . . . 2-6
Normal Source Restoration . . . . . . . . . . . . . . . 2-7
To Disconnect The P1 Plug . . . . . . . . . . . . . . . . . . . 2-9
Electrical Operation Test . . . . . . . . . . . . . . . . . . . . . 2-9
Section 3. Troubleshooting Guide . . . . . . . . . . 3-1
Section 4. Controller Troubleshooting . . . . . . 4-1
Power to the System . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Keypad And Status Panel . . . . . . . . . . . . . . . . . . . . 4-3
Normal Source Voltage and Frequency . . . . . . . . . 4-6
Emergency Source Voltage and Frequency . . . . . 4-9
System-Status, Not-In-Automatic Error . . . . . . . . 4-11
System-Status, System-Alert . . . . . . . . . . . . . . . . 4-12
Contactor Position Fault Error Messages . . . . . . 4-12
Transfer Hang Error Message . . . . . . . . . . . . . . . . 4-12
Power-Down Error Message . . . . . . . . . . . . . . . . . 4-12
RAM Or Memory Error Message . . . . . . . . . . . . . 4-13
Manual Transfer Message . . . . . . . . . . . . . . . . . . . 4-13
Manual-to-Off Transfer Message . . . . . . . . . . . . . 4-13
Fault #1 Or Fault #2 Message . . . . . . . . . . . . . . . . 4-14
Programming Mode Not-In-Off . . . . . . . . . . . . . . . 4-15
Engine Operates When it Should Not . . . . . . . . . 4-16
Engine Will Not Start . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Area Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Shunt Jumper-Controlled Options . . . . . . . . . . . . . 4-21
Inphase Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Source Monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Plant Exerciser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Time Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
Manual Override . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Off Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
Section 5. Accessory Troubleshooting . . . . . . 5-1
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Emergency Source Three-Phase Phase Option . 5-2
Test Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Time Delay Override Option . . . . . . . . . . . . . . . . . 5-10
Preferred Source Switch . . . . . . . . . . . . . . . . . . . . 5-14
Relay Auxiliary Dry Contacts . . . . . . . . . . . . . . . . . 5-15
Main Shaft Auxiliary Dry Contacts . . . . . . . . . . . . 5-22
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-47
Manual Operation Switches . . . . . . . . . . . . . . . . . . 5-54
Load Shedding Contacts . . . . . . . . . . . . . . . . . . . . 5-63
Remote Communication— RS/232 Or RS/485 . . 5-65
Section 6. Service Parts . . . . . . . . . . . . . . . . . . . . 6-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Inner Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Time Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Source monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Test Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Time Delay Override Switches . . . . . . . . . . . . . . . . 6-5
Preferred-Source Switches . . . . . . . . . . . . . . . . . . . 6-5
Auxiliary Contacts— Relay . . . . . . . . . . . . . . . . . . . . 6-5
Auxiliary Contacts— Main Shaft . . . . . . . . . . . . . . . . 6-5
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Plant Exercisers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Battery Chargers . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Source Monitors— Normal and Emergency . . . . 6-12
Load-Shed Contacts . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Time Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Appendix A. Glossary of Abbreviations . . . . . A-1
Appendix B. General Controller Information . B-1
Appendix C. Commonly Used Accessories . . C-1
