3
CONTOIL
®
DFM
Configuration overview
Schematic of a differential fuel consumption configuration
The 2 flow meters are just as an example. Both can be changed with a compact one.
Installation Advices
• The flow meters always have to be protected by a fuel filter. The max. mesh size depends on the flow meter size. The original engine
filter is ideal for all flow meter sizes.
• Be aware, that all the fuel which is passing through the supply line flow meter AND is not consumed by the engine, MUST return
through the return line flow meter to the tank.
• A leak line of the injector MUST be returned on the return line and before the return flow meter
• If the flow meters are marked with S and R, install the S- flow meter in the SUPPLY-line and the R- flow meter in the RETURN-line.
• The arrow on the flow meters must be show in the flow direction.
• The flow meters must be absolutely free of gas inclusions.
• High pressure hammers from injection pump have to be avoided on flow meters
(for example, with a min. 2 meter
rolled up
hose between flow meter in the supply line and the injection pump).
• Install the DFM-BC on the cabin floor, on the car dashboard or on the cabin top; but always in a good readable and accessible
position.
• For a good and professional installation of the Board Computer (DFM-BC) we recommend the Mounting Bracket Kit
(part number 80485)
For your Security...
• DO NOT program or change parameters while you drive. This may be dangerous for you and the other traffic
participants.
• During the electrical installation disconnect the vehicle battery.
• Be careful when disconnecting the pipes (exit of fuel will occur).
• After installation check all pipes for leaks.
Preliminary
filter
Pump
Fine filter
Mechanical
injection
pump
Engine
Tank
Battery
Fleet
Manager
