16 VI 14-419 def 07.2017
Repair instructions and trouble shooting
This meter is a measuring instrument and should be treated accordingly.
Fuel Oil meters must only be tested and operated with fluids with lubricating properties!
The electronic transducer has to be replaced completely as it cannot be repaired.
Safety notes
The applicable working regulations must be complied with during all work on the plant
When removing from pipe or reinstalling, safety instructions in the operating manual must be observed.
Extra caution is required when using inflammable cleaning substances. Room must be ventilated well.
Prior to disassembly, the measuring instrument must be free from dangerous or noxious residues. Clean and
rinse thoroughly as necessary.
Repair instructions for measuring sensors
Detaching of measuring chamber
Mark or memorise markings (dot, dash, embossment) at measuring chamber and housing.
Remove screws of measuring chamber.
Remove measuring chamber and cover from housing.
Remove deposits from housing surface and seating using fine emery cloth (Fig. 1).
Clean housing connections with a cloth.
For cleaning the use of non-fraying cloths and kerosene or solvents is recommended.
Replacing of filter
When removing the filter, small chips may form, which must not be allowed to enter the measuring chamber.
Therefore, its recommended to remove the housing from the measuring unit first (as above).
Pull filter out using a screwdriver or similar and replace it.
Put new filter in place. Press the metal ring into position using an appropriate tool (cylindric bar).
Take care, not to press on the bottom of the filter!
Rinse housing or remove possible chips with a cloth.
Cleaning or repairing measuring unit
Pull off cover from measuring chamber.
Remove driver, rotary piston, separating plate, and guide roller from measuring chamber. Clean and check if
worn or damaged. Replace such parts and clean all others.
Assembly of measuring chamber
Place guide roller onto pin at bottom of measuring chamber.
Insert separating plate into measuring chamber.
Insert the rotary piston with eccentric driver pin (3 mm) pointing upwards into the measuring chamber.
Position it so that the driver pin and separating plate lie on one axis.
Note: The centric guide pin of the rotary piston is now seated in the bottom of the measuring chamber
Place the driver onto the pin of the cover of the measuring chamber and align the driver’s long, deep groove
to the axis of the separating plate (Fig. 3).
Place cover of measuring chamber with aligned driver onto the measuring chamber, so that the separating
plate and driver pin of the rotary piston engage into the corresponding groove and driver (Fig. 4).
The cover should be flush and the rotary piston should move freely.
Mounting of measuring chamber
Fit the new gaskets lightly greased with silicon (Fig. 5).
Align inlet/outlet openings of the housing to the openings in the cover of the measuring chamber (Fig. 6).
The openings must correspond to each other.
Join housing and measuring chamber and check the markings
Align marking (dot, dash, embossment) on the measuring chamber base at right angles to the meter axis.
Insert measuring chamber screws and tighten them with correct torque (see page 4).
Repair instructions for ancillaries
The modules are not screwed together individually and may fall apart when being dismounted.
Mark or memorise the position of lid, modules and pulser connection in relation to the meter housing.
Remove Allen screws.
Lift off head ring with cover and counter module with spring ring.
Replace worn or damaged modules.
After replacement of adjustment gear, the meter is considered to be uncalibrated.
Reassemble in reverse order.