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7.2 Fault – Cause – Remedy
7.2
Fault – Cause – Remedy
Fault
Fault
over pressure
Blinking cycle pressure
reading and warning tri-
angle
Under range
Blinking cycle pressure
reading and warning tri-
angle
Front glass broken
Wrong pressure read‑
ings displayed
Battery icon and/or dis‑
play blinks
No display
Adjustment mode can‑
not be called‑up
Blinking warning triangle,
pressure reading = - - -
Display of all LCD
icons or
no display despite of
battery replacment.
20901134_EN_DVR 3pro_V1.4_060420
` Possible cause
Pressure too high.
`
Measuring range exceeded.
`
WARNING!
Risk of bursting.
>Discharge the system imme‑
diately by Venting.
Measuring range fallen
`
below.
Wrong cleaning agent used.
`
Mechanically
`
damaged.
Sensor measures incor‑
`
rectly.
Vacuum sensor polluted.
`
Defective sensor.
`
Battery low.
`
Device switched off
`
Power‑on time elapsed.
`
No voltage, battery empty or
`
defective or wrong poled.
A for sensor adjustment
`
inadmissible pressure is
reached
(no adjustment possible in
between pressure range 21
– 699 mbar).
Defective sensor.
`
Defecitve measuring equip‑
`
ment
Resolving problems
3Remedy
Vent the system or appara‑
3
tus.
Reduce pressure.
3
Perform sensor adjustment.
3
Pressure reading until 0
3
mbar (0 Torr).
Perform sensor adjustment.
3
Send in gauge.
3
Clean sensor
3
Perform sensor adjustment.
3
Send in gauge.
3
Replace battery.
3
Switch on device
3
Extend power‑on time.
3
Check
3
battery fastening.
Replace battery.
3
Perform adjustment at
3
min. > 700 mbar atmo‑
spheric pressure or vacuum
< 20 mbar.
For adjustment connect
3
a vacuum pump with pre‑
cise vacuum and then move
pump down to the possible
pressure range.
Send in gauge.
3
39
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