VACUTEC Leakfinder 625-WV609, Инструкция по эксплуатации, Страница: 16 / 19

12
EVAP Tech Tip
Do One of the Following:
1. The flow meter is active in the SMOKE and TEST positions of the Flow Control Valve. However, for the
most precise quantifying of a leak size use the
TEST position in either of these two methods.
A. Fill system in TEST (no smoke) setting until flow meter ball stops descending. Position the flow meter’s
red flag so that it aligns with the flow meter ball position. Compare flow meter ball position with flow
meter’s Leak Size Reference Points.
NOTE: If the leak size is unacceptable and leak testing is required; first alleviate all pressure from the
EVAP system so that smoke can be introduced.
Then set control valve to SMOKE (full flow) setting, introduce smoke and look for smoke or dye to find
the leak(s).
Or
B. To save time; fill system in SMOKE (full flow) setting until flow meter ball stops descending. Be sure
the
Leak finder
® is still <ON> and immediately position control valve to TEST, for a more accurate flow
meter reading. Be sure ball has stopped descending and compare flow meter ball position with flow
meter’s Leak Size Reference Points.
> Above reference point = FAIL.
> Below reference point = PASS.
If the leak size is unacceptable and leak testing is required, then time will have been saved because
you will have already filled the EVAP system with smoke. Immediately position the control valve again
to SMOKE and continue to introduce smoke while looking for smoke or dye at leak points.
NOTE: When testing a closed system, such as the EVAP system, it is best to purge the ‘non-smoke’ air out
of the system by leaving an opening in the system being filled (e.g. EVAP vent). Close the system once
smoke exits that opening and continue to fill with smoke. This quickly fills the system with smoke.
!
ALL TESTS WITH THIS TESTER ARE PERFORMED WITH THE VEHICLE’S ENGINE TURNED OFF!