Original Operating Manual - ROPA Fahrzeug

7 Maintenance and Care
Chapter 7
Maintenance and Care
7.1.3.4 Microorganisms in the fuel system
Occasionally, inexplicable obstructions will be found initially in fuel systems filled with
diesel or biodiesel fuels. These obstructions are often caused by microorganisms.
These microorganisms (bacteria, fungal growth or yeast) may multiply a great deal under
favorable conditions. Needed for growth are water which is found in every storageor
vehicle fuel tank as condensation and vital elements in chemically bound form, such
as sulfur, phosphor, nitrogen, oxygen and trace elements. Fuel additives may also
contribute to microorganism growth.
Depending on the temperature, stronger or weaker growth occurs, which leads to the
formation of fibrous meshed fungal complexes and sludge.
The consequences: Obstruction of the fuel prefilter by rust and fibers (meshed fungal
complex) and frequent filter exchange. This leads to a loss of power of the engine and, in
extreme cases, to breakdown of the vehicle.
Remedial measures
If infestation with microorganisms is found in storage or vehicle fuel tanks, we
recommend the following disinfecting agents to fight it:
Product: GrotaMar 71 Ropa Item No. 435060 (0.5 l)
Manufacturer: Schülke & Mayr
D-22840 Norderstedt
040 / 52100-0
Fax: 0 40 / 5 21 00 - 244
www.schuelke.com
sai@schuelke.com
If necessary, please contact the manufacturer (e. g. to inquire about sources abroad).
Consumption 0.5-1.0 l per 1000 l of diesel fuel.
262