tecnotest STARGAS Manuel D'utilisation page 22

USE ___________________________________________________________________________________ STARGAS
NOTA BENE:
If the programme displays the RPM RANGE SELECTION page, usually when
the engine rpm number is lower than 700 RPM or when it exceeds 900 RPM,
it is necessary to select the RPM value being nearest to that of the tested
engine. The programme processes the data by setting as predefined value
the measure it deems to be more correct.
After carrying out the relevant checks the operator shall select the most
reliable measure (by using the cursor shifting keys) and confirm by ENTER.
If during the tests the rpm is unstable (anomalous values) the problems are
due to the generator charge pulses or to the charge current pulses
interfering with the continuous current of the electrical system. These currents
cause a voltage drop on the electrical system lines that can be measured by
the tool revolution counter.
In case you have problems during tests check:
•
Measuring the speed functions better with a partially discharged battery
than with a fully charged one. It is, therefore, worthwhile switching on
several loads for a few minutes before starting the engine.
•
During measurement switch on several loads such as the lights, rear
window heating etc.
•
Once the engine is on, press down fully on the accelerator, the
generators regulator can only be activated through this.
•
Be sure that the V-belt used to drive the generator does not slip off,
otherwise faulty measurements could occur whilst the engine is
accelerating.
•
In some vehicles a switched on fan can distort measurement. In this
case, switch off the fan.
The rpm reading can be carried out by suing the RPM cable from the electric
lighter (option) or the cable with induction clamp (option). The latter is set to
4-time engines, but can be set to 2-time/DIS engines too.
18 OPERATING INSTRUCTIONS