PLANAR-8DM
ENG
18
Fig. 10 Kerosene content in diesel fuel mixture depending on ambient air temperature
10.3 In case winter fuel is not used in appropriate weather, the fuel intake filter of the
fuel tank (if available) and the filter of the fuel pump may become clogged with paraffin,
which leads to failure to launch the heater or its shutdown during operation.
To repair such a malfunction:
1)
Dismount the fuel pump from the vehicle. Hold surface A with a 17 mm wrench to
prevent it from turning; remove the nozzle and the filter (see Fig. 10). Do not use
other surfaces to secure the fuel pump when removing or reinstalling the nozzle.
2)
Rinse the filter, purge it with compressed air.
3)
Reinstall the filter into the fuel pump; if no sealing gasket is available for the
nozzle, seal it with sealing compound.
4)
Install the fuel pump and check operation of the heater.
Fig. 10 Fuel pump
10.4
Check battery charge on a regular basis.
10.5
Good practice is to switch the heater on with the grounding breaker closed.
10.6
Good practice is to disconnect the heater from the power source (battery) during
long standstill or storage of the vehicle in order to prevent discharge (an out-of-service
heater consumes 30–40 mA).
For winter diesel fuel
For summer diesel fuel
Kerosene
content, per
cent
Outlet
Ball
Spring
Filter
Intake
Nozzle
