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Provides an overview of the manual's content and scope.
Explains the structure and meaning of Onan LT II transfer switch model numbers.
General description of the LT II transfer switch operation.
Details external and internal components, including cabinets, switches, relays, and meters.
Describes sequences for normal operation, power outages, and power restoration.
Instructions for simulating power outages for testing.
General guidance and safety precautions for making adjustments to the transfer switch.
Details adjustments for control relays (K3, K4, K5, K8) and voltage sensor relays (K6, K9).
Instructions for setting the exerciser clock and adjusting the battery charger.
Covers adjustments for preheat time delay and programmed transition.
Covers general procedures for component removal and replacement.
Step-by-step guide for replacing the optional auxiliary switch.
Instructions for inspecting and replacing the main transfer switch contacts.
Procedure for replacing the closing coil of the transfer switch.
Details on how to replace the mechanical latch assembly.
Guidance on approaching troubleshooting with schematics and component checks.
Describes the sequence of events during normal automatic operation.
Lists common problems like start failures, load transfer issues, and exercise failures.
Steps to diagnose and resolve issues where the battery charger is not charging.
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General