English (GB)
43
* Depending on setting
8.1.2 General faults
Pressure sensor
(Warning)
• Broken "
FlowControl
" cable (see
• Sensor defect
• Pressure sensor not correctly
calibrated.
• Check plug connection.
• Change sensor if necessary.
• Calibrate pressure sensor correctly (see
section
Motor blocked
(Alarm)
• Backpressure greater than
nominal pressure
• Damage to gears
• Reduce backpressure.
• Arrange for repair of gears, if necessary.
Bus error
(Alarm)
• Fieldbus communication error
• Check cables for correct specification and
damage; replace if necessary.
• Check cable routing and shielding; correct
if necessary.
E-Box
(Alarm)
• E-Box connection error
• Faulty E-Box
• Check plug connection.
• Replace E-Box if necessary.
Cable break
(Alarm)
• Defect in analog cable 4-20 mA
(input current < 2 mA)
• Check cable/plug connections and
replace, if necessary.
• Check signal transmitter.
Service now
(Warning)
• Time interval for service expired
• Perform service (see section
Display in the
"
Alarm
" menu
Possible cause
Possible remedy
Fault
Possible cause
Possible remedy
Dosing flow too high
Inlet pressure greater than
backpressure
Install additional spring-loaded valve (approx.
3 bar) on the discharge side.
Increase pressure differential.
Incorrect calibration
Calibrate the pump (see section
).
No dosing flow or
dosing flow too low
Air in dosing head
Deaerate the pump.
Faulty diaphragm
Change the diaphragm (see section
Leakage/fracture in lines
Check and repair lines.
Valves leaking or blocked
Check and clean valves.
Valves installed incorrectly
Check that the arrow on the valve housing is
pointing in the direction of flow. Check whether all
O-rings are installed correctly.
Blocked suction line
Clean suction line/install filter.
Suction lift too high
Reduce suction lift.
Install priming aid.
Enable "
SlowMode
" (see section
Viscosity too high
Enable "
SlowMode
" (see section
Use hose with larger diameter.
Install spring-loaded valve on the discharge side.
Faulty calibration
Calibrate the pump (see section
).
Deaeration valve open
Close the deaeration valve.
Содержание DDA 12-10
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