LEMAG DIESELswitch however controls the change-over process with its especially designed 3-way valve and exchangeable orifice inserts. These inserts have special opening surfaces that cause a controlled pressure difference to be able to control the change over and can be applied for all fuel systems.
AUTOMATIC COOLER CONTROL
LEMAG CONTROLmag does not only concentrate on the gradual change-over of fuel, but also takes the entire process into account as the following problems can occur if e.g. the cooler is not controlled automatically:
- Heat energy from the booster pumps
During low load operation the supply and circulating pumps create a lot of heat energy, which heats up the MDO. In many cases the fuel temperature cannot be reduced sufficiently by just adding just new fuel.
- Risk of DFO temperature drop
If the cooler is started too early, the temperature drop can be more than 12°C / min, which can severely damage the engine.
- Risk of DFO cooler blocking
If the cooler is operated incorrectly and at the wrong time the fuel flow can easily be blocked by HFO cooling down too rapidly.
LEMAG has already recorded many DFO temperature high alarms and has managed to avoid any resulting safety risks accordingly. To date these situations were always created by incorrectly operated (trace) heating systems.
LEMAG CONTROLmag also has an extensive safeguard system integrated with over 50 alarm parameters, which also takes all necessary precautions against black-outs to ensure a safe fuel change-over process.