ProMinent delta DLTa optoDrive - Troubleshooting guide; Warning messages and other faults

Fault description Cause Remedy Personnel
Either the yellow LED display lights up, the "Air
lock" symbol appears flashing in the LCD dis‐
play - or, together with the red LED display, the
symbols for "Error" and "Stop" also appear, and
the pump stops.
Gas bubbles in the
liquid end (leaks,
gaseous medium,
cavitation).
If the red LED display lights up,
press
[P] - think through the con‐
sequences for the process!
Bleed the liquid end and rectify
the cause. Seal the system or
slow the suction stroke.
Technical
personnel
Either the yellow LED display lights up, the "p+"
symbol
p+
appears flashing in the LCD display -
or, together with the red LED display, the sym‐
bols for "Error" and "Stop" also appear, and the
pump stops.
A constriction or a
closed shut-off valve
on the discharge
side.
If the red LED display lights up,
press
[P] - think through the con‐
sequences for the process!
Open the shut-off valve or rectify
the constriction.
Technical
personnel
Either the yellow LED display lights up, the "p-"
symbol
p -
appears flashing in the LCD display -
or, together with the red LED display, the sym‐
bols for "Error" and "Stop" also appear, and the
pump stops.
There is a leak or a
burst or torn line on
the discharge side.
If the red LED display lights up,
press [P] - think through the con‐
sequences for the process!
Rectify the leak or clear the
cause.
Technical
personnel
14.4 Warning messages
Fault description Cause Remedy Personnel
The yellow LED display lights up, the "Level"
symbol appears in the LCD display and
flashes.
The fluid level in the storage tank
has reached "liquid level low 1st
stage".
Fill the storage
tank.
Instructed per‐
sonnel
14.5 All other faults
Please contact the responsible ProMinent branch or representative!
Troubleshooting
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