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7.2 Fault – Cause – Remedy
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.
N°: 999341_EN_DVR 2pro/12.07.2017
` Possible cause
Pressure too high.
`
ƒ
Measuring range exceeded.
`
ƒ
WARNING!
Risk of bursting.
>Discharge the system imme‑
diately by Venting.
Measuring range fallen
`
ƒ
below.
Wrong cleaning agent used.
`
ƒ
Mechanically
`
ƒ
damaged.
Sensor measures incor‑
`
ƒ
rectly.
Vacuum sensor polluted.
`
ƒ
Defective sensor.
`
ƒ
Battery low.
`
ƒ
Device switched off
`
ƒ
Power‑on time elapsed.
`
ƒ
No voltage, battery empty or
`
ƒ
defective or wrong poled.
A for sensor adjustment
`
ƒ
inadmissible pressure is
reached
(no adjustment possible in
between pressure range 21
– 699 mbar).
Defective sensor.
`
ƒ
Defecitve measuring equip‑
`
ƒ
ment
Resolving problems
3Remedy
Vent the system or appara‑
3
ƒ
tus.
Reduce pressure.
3
ƒ
Perform sensor adjustment.
3
ƒ
Pressure reading until 0
3
ƒ
mbar (0 Torr).
Perform sensor adjustment.
3
ƒ
Send in gauge.
3
ƒ
Clean sensor
3
ƒ
Perform sensor adjustment.
3
ƒ
Send in gauge.
3
ƒ
Replace battery.
3
ƒ
Switch on device
3
ƒ
Extend power‑on time.
3
ƒ
Check
3
ƒ
battery fastening.
Replace battery.
3
ƒ
Perform adjustment at
3
ƒ
min. > 700 mbar atmo‑
spheric pressure or vacuum
< 20 mbar.
For adjustment connect
3
ƒ
a vacuum pump with pre‑
cise vacuum and then move
pump down to the possible
pressure range.
Send in gauge.
3
ƒ
41
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