Delphi YDT-35 - Backleak (Return) Flow Measurement Test (RFM) - Option; Figure 4.21 Injection Symbol; Figure 4.22 Pump Symbol

YDT-35 Operating and Servicing Manual
HL066(EN) ISSUE 1, 05/2015 39
Press the START key
The correct voltage for the injector is set and the test begins. When the ISF tests are running, the
‘injection’ symbol flashes on screen, refer to Figure 4.21.
Figure 4.21 ‘Injection’ Symbol
Make sure there is adequate ventilation. Fluid vapour may be released from hot fixtures
or high pressure leaks and a mist may develop from the spray chamber. The specific
directions in Health & Safety Data Sheets must be adhered to.
The ‘pump’ symbol appears on screen when injection tests are performed to indicate that the high
pressure pump is active, refer to Figure 4.22
Figure 4.22 Pump Symbol
The test assessment is purely visual*. There are no pass/fail indications on-screen that the injector is
acceptable or not. The operator must determine by observation and comparison with a known ‘good’
injector, whether the spray pattern and injector performance for all tests is acceptable.
* If YDT-35 Backleak Measurement Unit (8999021) is fitted, observe the flow measurement
displayed on the backleak flow indicator. This backleak measurement is purely visual and the
operator must determine by observation and comparison with a known ‘good’ injector, whether the
backleakage (return) flow is acceptable at each test step.
When the test has been completed, press the Stop key to move on to the RFM test.
4.4.3 Backleak (Return) Flow Measurement Test (RFM) – Option
If the backleak flow indicator option has been fitted to the machine the RFM test may be performed.
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