Diagnostics and repair

Repair of diesel generators

Nowadays diesel generators are an excellent alternative for facilities where an uninterrupted supply of electricity is required. These are industrial facilities, as well as offices, shops. Diesel generators are widely used in everyday life due to their inexpensive fuel, as well as for conditions of unstable power supply. Especially this point applies to areas where the supply of electricity is uneven, intermittent.

Diesel generators and power stations are quite complex structural device. Several factors affect the excellent operation of the sets, this is the reliability of the manufacturers and the relevant characteristics indicated in the accompanying documents, compliance with the rules for operating the sets.

The technical device has accompanying documents, which clearly indicate its characteristics, as well as recommendations for use of generators and other equipment. A negligent attitude to these requirements often leads at first to small malfunctions in the operation of the device, which subsequently can lead to a more complex breakdown, up to the failure of the generator.

Inspection in-time and regular check of all components and the entire set generally are the key to a stable and long period of operation. Typically, repair of generators with complex malfunctions costs its owner quite a large check.

General recommendations

The technical documentation of the units specifies the periodicity and inspection rules.

Checking the external integrity of the generator. There should be no cracks on it, oil should not seep through the housing and other holes, and all fixing objects in the form of bolts and other screws should be tightly fixed. Check the tension of belts and clamps.
Pay attention to the operation of the engine when starting, whether the process is slowing down, the engine stalls immediately after starting. In most cases, such malfunctions are associated with problems in the wiring of the unit.
Availability of fuel in the fuel compartment.
Voltage supply after the start of the generator. The absence of voltage with a formally working device is usually associated with a breakdown of the voltage regulator.

Troubleshooting and remedies

There are several main types of breakdowns. Some of them can be eliminated by the owner himself. However, it is recommended to contact special services in the event of a moderate breakdown, as incompetence in this matter may lead to more serious repairs of the diesel generator in the future.
Specialists will first conduct a complete diagnosis of the unit to detect or lack of additional damage.

1. Most of the questions from ordinary users are related to engine overheating.

Basically, this problem arises if the rules were violated during the installation of the power plant from the very beginning.
Incorrectly chosen place, including the square footage of the room.
Using the generator in climatic conditions unsuitable for its operation.
The problem may be the result of a violation of the calculation of the used cooling radiator during the manufacture of the generator.
Regular operation of the generator at maximum power due to phase shift.

2. Overconsumption of fuel can lead to the repair of the power plant. Such a malfunction is expressed in the form of irregular start-up and unstable operation at low speeds.

The use of low-quality fuel or its lack can lead to breakdown.
Lack of coolant.

3. Failure (burnout) of the winding of the alternating current generator. This type of malfunction does not require repair of the generator.

The reason is the connection of devices whose power exceeds the operating power of the generator itself.
Phase shift during device operation.

Rewind failure occurs gradually.
There are additional malfunctions in the form of too low or high oil pressure, problems with the starter, engine knocking, and so on. In all cases, it is advisable to seek qualified help from specialists. Their experience in a narrow specialty will help avoid additional costs.