Pramac Ac03: Manual 'link'

Pramac AC03 (also known as the ComAp InteliLite NT AC03) is a digital controller used for managing generator sets, featuring manual, automatic, and test modes. You can find comprehensive documentation, including the Pramac Operator Guide and the more detailed AC03 2.0 Reference Guide , on platforms like Core Manual Operations

To operate the unit manually, you must first clear any existing alarms and select the correct mode: Mode Selection: Mode Left/Right buttons to navigate to (Manual) mode.

button; this initiates a pre-start delay before the engine cranks.

button once to begin a cooling cycle (typically 120 seconds). Pressing it again will bypass the cooling and halt the engine immediately. Resetting Alarms: FAULT RESET pramac ac03 manual

button once to silence the horn and twice to clear inactive alarms from the screen. Key Controller Features

The AC03 serves as the "brain" of the generator, monitoring critical health metrics: Live Monitoring:

The display provides real-time data on phase voltages, frequency, battery voltage, engine RPM, and running hours. User vs. Engineer Profiles: Pramac AC03 (also known as the ComAp InteliLite

Most users are restricted from changing deep system parameters. Accessing "Engineer Mode" (typically by pressing Enter then Page three times) allows for advanced configuration of inputs and outputs. PC Connectivity:

The controller can connect to a laptop via an RS232-to-USB interface using the software for remote monitoring and configuration saves. Safety & Maintenance Emergency Stop:

The red E-stop button should only be used in actual emergencies. After use, the controller requires a fault reset before it can be restarted. Always switch the unit to Disconnect Loads: Turn off and unplug your connected

The 3 Most Important Things Hiding in the AC03 Manual

You might be tempted to just pour in gas and pull the cord. Don't. Here is what the manual tells you that common sense won't:

6. Stopping Procedure

  1. Disconnect Loads: Turn off and unplug your connected appliances.
  2. Breaker: Turn the AC circuit breaker on the generator to the OFF position.
  3. Cool Down: Let the engine run at no-load for 2–3 minutes to cool down the internal components.
  4. Engine Switch: Turn the engine switch to the OFF position.
  5. Fuel Valve: Turn the fuel tap to the OFF position (this prevents carburetor flooding).

6. Wiring Diagram & Exploded View

Essential for technicians: the schematic shows internal components (transformer, rectifier bridge, capacitor bank, output relay). Use this only if qualified; capacitor discharge can take up to 5 minutes after disconnection.

The "Missing Page" of the AC03 Manual

While the official manual is great for safety, it isn't great for maintenance. Here is the unofficial addendum every owner should write in the back of their manual:

  • Air Filter: The manual says clean it every 50 hours. Do it every 25 hours if you are in dusty conditions. A clogged filter kills the carburetor.
  • Fuel Drain: If you store the AC03 for more than 3 months, the manual suggests draining the carburetor float bowl. Do this. If you don't, the ethanol in modern petrol turns to jelly and you will be rebuilding the carburetor.
  • Brushless Motor: Good news—the AC03 has a brushless alternator, so you never need to replace carbon brushes. The manual mentions this on page 12. Thank your lucky stars.

Problem 4: Red error light – no other info.

Manual solution (Section 1.4 – Safety Shutdown):
A solid red LED indicates internal failure (e.g., shorted output transistor or swollen capacitor). The manual explicitly states: "Do not attempt to repair – return to authorized service center." Opening the unit exposes lethal DC bus capacitors (up to 400V).

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