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Cummins/Onan — 19

For these Cummins/Onan models: EGMBT (P4500), EGMBT/P4500, EGMBU (P5000e), EGMBU/P5000e.

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Procedure

  1. 3. Starting and Running the Generator Set 8-2009
  2. 3.7 Circuit Breakers If too many tools or appliances are connected, or a tool or appliance fails due to a short circuit, one or more of the AC or DC circuit breakers on the control panel will trip. Disconnect or turn off as many tools and appliances as possible and reset the circuit breaker by pushing the reset button back in. (It takes at least 10 seconds after tripping to reset.) Turn on or reconnect only as many tools and appliances as the generator set can power. A tool or appliance probably has a short if it causes a circuit breaker to immediately trip when connected. WARNING: Short circuits in faulty electrical tools and appliances can cause electrocution or fire. Read and follow the tool and appliance manufacturer's instructions and warnings regarding use, maintenance, and proper grounding.
  3. 3.8 Grounding Ground the generator set to earth ground by connecting a suitable ground wire to the ground lug terminal on the generator set control panel. The other end of the wire must be connected to a suitable earth ground according to local electrical codes. Do not connect grounds from tools or appliances to the Ground Lug terminal. Extension cords for tools or appliances with grounding blades must have grounding blades. WARNING: If the generator neutral supply is not grounded to earth, the user may be left without ground fault protection, which could result in serious personal injury or death. Always make sure the generator neutral supply is grounded to earth before operating the generator set.
  4. 3.9 Low Oil Shutdown The generator set automatically stops if it senses low oil level. If the engine stops while running, or starts but then stops, check the oil level and add oil as necessary. See the Maintenance section of this manual.
  5. 3.10 Electrical Interference with Communications or Appliances If the generator set causes electrical interference with communications devices, move the generator set and device farther apart or shut down the generator set while the device is operating.
  6. 3.11 Exercising the Generator Set Exercise the generator set at least two hours every month if use is infrequent. Run it at approximately 50 percent capacity. A single two-hour exercise period is better than several shorter periods. Exercising a generator set drives off moisture, re-lubricates the engine, replaces stale fuel, and removes oxides from electrical contacts. The result is better starting, more reliable operation, and longer engine life. 20 914-0116 (Issue 4)

Source: manual:914-0116 Cummins EGMBT&U Operators Manual (8-2009) .pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.