Instruction Manual

7
is shown, and press ENTER to ac-
tivate. You can now use SELECT to
choose the function you want, and
ENTER to execute the function. De-
pendingonthecurrentsetting,therst
function to be shown is either
min/
max disp or LEAK disp.
Leak measurement function
Leak mode is used to determine the
pressure change over a dened pe
-
riod, which can be adjusted. The unit
to be tested must be connected to the
low pressure calibrator on the pressure
side.
Start leak measurement
Activate the
MANO menu. The dis-
play shows
Leak dISP. Press the
ENTER button and
then the SELECT
button.
PressENTERtoconrm Leak
Start. The leak measurement starts,
and the display alternates between
the current leak time and the pressure
change measured thus far.
Active leak measurement
During leak measurement, the lower
part of the display alternates each
second between the measurement
time that has now elapsed [mm:ss]
and the pressure change measured
thus far.
End leak measurement early
To end an active leak measurement
early, press the ENTER button and
conrmthe «
Leak Stop» display by
pressing ENTER.
Leak measurement completed
If the leak measurement time has
elapsed or if the measurement was
manually ended ahead of time,
the display alternates between the
elapsed leak measurement time and
the measured pressure change.
Set leak measurement time
The leak measurement time is preset
to 10 minutes in the factory, and it can
only be changed with the «Mano Con-
g»software.
(➞ Software for calibrators)
MANO / «Continuous» function
Automatic switch-off function (the de-
vice switches off automatically 15 min-
utes after a button was last pressed).
Leak measurements are canceled by
the automatic switch-off function if the
measurement time is more than the
switch-off time.
Cont on: Disables the automatic
switch-off function
Cont oFF: Enables the automatic
switch-off function
If the «Continuous» function is en-
abled,
Contashesonthedisplay.
7. Maintenance / disposal
Battery
The pressure calibrator is powered by a
3 V button-cell battery (behind the
display). If the battery is low, the bat-
tery symbol on the display
lights up.
Replacing the battery
Please switch the device off. Turn the
display section ring beyond the limit
stop until it is released from the hous-
ing section (turn through about 180°).
Open the battery compartment and
change the battery (type CR 2430).
Pressure coupling lter
The low pressure calibrator has a CrNi
lter, 11 × 8 (material DIN 1.4404),
tted behind the pressure coupling
in order to prevent impurities from
penetrating inside it, which could
cause leaks.
Ifthelterisdirtyandpressurecanno
longer be transmitted, replace it with
thespare lter that isincluded in the
scope of delivery.
➞ Mano mode
➞ Launch Leak
mode by press-
ing the ENTER
button
➞ Start the leak
measurement
with ENTER
➞ Unit of pressure
➞ Current
measured value
ENTER
ENTER
ENTER
KELLER
S
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/
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.
CrNi-Filter
Leak run-
time in
mm:ss
Pressure change
within leak
runtime
➞
➞ Unit of pressure
➞ Current
measured value
Leak run-
time in
mm:ss
Pressure change
within leak
runtime
➞
➞
➞