Cummins/Onan DGFS Generator Set

⚠ If Home button or Previous Main Menu button is pressed before pressing save symbol, changes are not saved.

1. Press button next to symbol in display until + and − symbols are displayed.
2. Press button next to arrow symbols to move to numeric character to change.
3. Press button next to + symbol to increase value or select parameter.
4. Press button next to − symbol to decrease value or select parameter.
5. After adjusting values/selecting parameters, press symbol to save changes.

⚠ Do not add water in freezing weather unless engine will run long enough (two to three hours) to assure thorough mixing.

1. Check level of electrolyte in batteries at least every 200 hours of operation.
2. Fill battery cells to bottom of filler neck.
3. If cells are low on water, add distilled water and recharge.
4. If one cell is low, check case for leaks.
5. Keep battery case clean and dry.

Tools: Battery hydrometer

1. Use a battery hydrometer to check specific gravity of electrolyte in each battery cell.
2. Hold hydrometer vertical and take reading.
3. Correct reading by adding four gravity points (0.004) for every ten degrees electrolyte temperature is above 80°F (27°C).
4. A fully charged battery will have corrected specific gravity of 1.260.
5. Charge battery if reading is below 1.215.

⚠ Electrolyte is dilute sulfuric acid harmful to skin and eyes. Wear goggles and protective rubber gloves and apron.

⚠ In case of contact, flush eyes with large amounts of water for minimum 15 minutes and call physician.

1. Keep batteries clean by wiping with a damp cloth when dirt appears excessive.
2. If corrosion present, remove battery cables and wash terminals with baking soda solution.
3. Be sure vent plugs are tight to prevent cleaning solution entering cells.
4. After cleaning, flush outside of battery and surrounding areas with clean water.
5. Coat terminals with light application of petroleum jelly or non-conductive grease.

⚠ Filters should be handled with care to prevent damage.

1. Release the three cover clips and remove the air cleaner cover.
2. Slowly remove the air filter to reduce dust dislodged.
3. Wipe out interior of air cleaner housing and cover with clean, damp cloth.
4. Inspect new air filter for shipping damage; do not install damaged filter.
5. Install new air filter, applying pressure at outer rim of filter.
6. Put on air cleaner cover and secure with three cover clips.

⚠ Filters should be handled with care to prevent damage.

1. Remove the air cleaner cover.
2. Remove thumb screw and gasket washer, then remove element from air cleaner.
3. Wipe out interior of air cleaner housing and cover with clean, damp cloth.
4. Install new element and secure with gasket washer and thumb screw.
5. Put on air cleaner cover and secure.

⚠ Emergency Stop shutdown can be reset only at the PCC front panel.

1. Pull the emergency stop button out.
2. Turn the O/Manual/Auto switch to O.
3. Press the front panel Fault Acknowledge/Reset button.
4. Return O/Manual/Auto switch to desired position.

1. Check engine oil level and keep near dipstick high mark without overfilling.
2. Check engine coolant level and refer to Cooling System maintenance procedure.
3. Make sure fuel tanks have sufficient fuel and fuel system is primed.
4. Check for fuel leaks and ensure all fittings are tight.
5. Make sure cooling inlet/outlet and exhaust ventilation openings are clear.
6. Check exhaust system tight and gases discharged away from building openings.

1. Turn the O/Manual/Auto switch to the Manual position.
2. Press the Manual Run/Stop button.
3. Starter will begin cranking and, after a few seconds, engine will start.
4. Starter will disconnect.

⚠ Turning the O/Manual/Auto switch to O causes immediate engine shutdown (bypasses Cool-down At Idle). Avoid hot shutdown if possible.

1. Press the Manual Run/Stop button.
2. Generator set completes its normal shutdown sequence.
3. Generator set stops after the cool-down at idle timer has timed out.