Dedicated low-resistance terminals monitor the air-end discharge temperature. Correct polarity and shielding are required here to prevent reading fluctuations.
The motor starter coil (labeled M1 ) connects to Output Card Slot 3, Terminal 8 . The other side of the coil goes to L2 (Neutral) . The diagram also notes: "Use snubber across M1 coil (Delcos P/N 234-01)." This is a critical detail—ignoring it can cause false triggering. delcos 3100 wiring diagram
The Delcos 3100 does not switch the main motor power directly; instead, it energizes smaller control relays that trigger heavy-duty magnetic contactors. A standard Star-Delta (Y/Δ) motor wiring configuration comprises three main contactors: The other side of the coil goes to L2 (Neutral)
Before you touch any wire inside the compressor, internal documentation contains a mandatory safety warning: . The SR version specifically requires you to disconnect the system from the power supply and wait a full 12 minutes before touching any electrical components to allow the power capacitors to discharge. This is not a suggestion; it is a life-saving requirement. it is a life-saving requirement.
The controller operates on a to ensure safety for maintenance personnel.
Includes connections for the Air End Discharge Temperature to monitor for overheating.