DBW 2010 / 2016 6Operating Tests
605
6.3.4 Checking ignition spark generator
WARNING
High voltage; a voltage of approx. 8,000 V jumps across at
ignition electrodes.
IMPORTANT
Do not charge ignition spark generator without ignition elec-
trodes with voltage.
Test
NOTE
Connect direct current supply with plus to black wire and
negative to brown wire.
– Connect direct voltage of 12 V or 24 V
– Target state: Ignition sparks jump across to ignition elec-
trodes.
6.3.5 Checking fuel pump
NOTE
The fuel pump is checked when installed. The pump pressure
may be adjusted.
A tester is required for testing. A tester (display range 0 to
15 bar) can be purchased from your authorised Webasto
dealer.
IMPORTANT
The ignition spark generator must be removed.
Test
– Remove ignition spark generator (see 9.2.7.1).
– Remove atomiser nozzle.
– Screw on tester.
– Cover flame monitor.
– Switch on heater.
– After approx. 15 sec. the pump pressure is displayed (see
Fig. 609).
DBW2010: 7 bar for nozzle 0.4 gph
10 bar for nozzle 0.3 - 0.35 gph
DBW2016: 11.5 bar
– Switch off heater.
– Screw off tester.
IMPORTANT
Do not damage nozzle hole.
– Screw in atomiser nozzle and tighten to 20 Nm.
– Install ignition spark generator (see 9.2.7.2).
Fig. 609 Fuel pump pressure
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