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Fig. 27. Display pressure test during
measurement
Start/stop button
Fig. 28: Display pressure test with meas-
urement stopped
8
Maintenance
8.1
Insert or change batteries
Fig. 29: Battery change
8.2
Coolant hoses
8.3
Cleaning
The display shows a
and the timer starts counting the minutes.
Line 1: Refrigerant
Line 2: left: Timer, right: differential pressure
Line 3: left: Output pressure, right: currently meas-
ured pressure
•
To stop the pressure drop test, press the
start/stop button.
The display shows a
and the timer starts counting the minutes.
Line 1: Refrigerant
Line 2: left: Timer =0, right: differential pressure
Line 3: left: Final pressure
Switch off the unit.
•
Fold up the suspension on the back of the unit.
•
Open the battery compartment with a Phillips
•
screwdriver.
Insert 3 AA Mignon 1.5 V batteries. Observe
•
the correct polarity.
ATTENTION!
Remove the batteries if you are not going to use
the unit for a longer period of time.
Replace the hoses with new ones after me-
•
chanical stress or after the meter has fallen
down.
Clean the housing with a damp cloth.
•
Make sure that the threaded connections are
•
free of grease or other deposits. Clean the
connections with a damp cloth if necessary.
Maintenance
icon next to the HOLD icon
▀
icon next to the HOLD icon
▀
EN
45
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