1
4
Calibrating
Leak
finder
®
Output Supply Pressure
The
Leak
finder
®
has been calibrated at the factory and preset to deliver approximately 14”
H2O pressure (35 mbar | 3.5 kPa), in TEST mode. It is normal for the
Leak
finder
®
to deliver a
slightly lower pressure in SMOKE mode.
However, follow the instructions below if it ever becomes necessary to
calibrate the supply pressure that the
Leak
finder
® delivers.
A.
Perform steps
1-4
in
Initial Setup
, on pages 4-5.
B.
Position
Leak
finder
’s
Control Valve
on
TEST
mode. (
Figure 3
)
C.
Place your finger at end of supply hose nozzle
(or use leak-proof plug to cap supply hose nozzle).
(Figure 4)
D.
Press & release the start button on
Leak
finder
’s control panel.
(Figure 5)
NOTE: While plugging supply hose nozzle; allow up to 30 seconds for
pressure on
Leak
finder
’s
vacuum/pressure gauge to stabilize.
E.
Verify pressure is at 14" H2O on
Leak
finder
’s pressure gauge.
(Figure 6)
• If pressure is approximately 14" H2O and ball in flow meter is at zero,
then the calibration is complete
.
• If pressure is not at 14" H2O, or if ball in flow meter is not at zero,
then immediately proceed to step F below.
F.
Remove plastic cap, exposing pressure regulator adjustment.
(Figure 7)
G.
Turn tester <ON>.
(Figure 5)
H. Once again plug end of supply hose nozzle
.
(Figure 4)
I.
Using a flat blade screwdriver turn adjustment screw clockwise to
increase pressure and counter-clockwise to reduce pressure.
Note:
Do not turn adjustment screw more than ½ turn at a time.
Note:
If reducing pressure; you must remove plug from the supply hose
in order to relieve pressure build-up, then plug nozzle again and verify
pressure reading on
Leak
finder
’s gauge.
Figure 3
Figure 4
Figure 5
Figure 6
J.
Be sure steps A-E on this page have been met. Use a screwdriver to
reduce
Leak
finder
’s pressure by very slowly turning screwdriver counter-clockwise,
while occasionally plugging the supply nozzle with your finger to verify if the safety
pressure-relief valve has closes; indicated by the flow meter ball settling at zero mark.
Start the calibration process over by starting with a low pressure setting and slowly
work your way up to the 14 inch water setting.
Figure 7
VERY IMPORTANT: If at any time during this calibration process the ball in
the flow meter does not settle at zero mark, that can only indicate one of
two issues.
1.
Leak
finder
could be producing too much pressure, causing the
Leak
finder
’s internal EVAP safety pressure-relief valve to open, indicated
by the flow meter measuring the flow rate of the over-pressure relief
valve’s leak. Proceed to step ‘J’ below to resolve this issue.
2.
The tester itself could have a leak. Note: step 1 above must be resolved
before an internal leak of the tester can be determined.
Содержание Leakfinder WV622N-VWKIT
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