Table of Contents
Advertisement
Maintenance / Troubleshooting / Remedy
Possible cause
Remedy
Possible cause
Remedy
Page 20
11
Maintenance
WARNING
Metering pumps and their peripherals may only be maintained by trained and authorised
persons.
The maintenance of the Pneumados metering pump is limited to checking the metering output,
the leak-proofness of the liquid end and the compressed-air connections as well as the compressed-
air supply according to the site requirements.
12
Troubleshooting / Remedy
Faults which can be remedied by yourself or minor repair work which can be done by yourself.
NOTE
• In order to be able to remedy minor defects any time, we recommend to keep a
replacement part kit consisting of diaphragms, valves, balls, and gaskets, and a gasket
kit!
• The order numbers for these kits are listed in our product catalogue in "Solenoid pump
accessories - replacement part kits Beta/ 4"
WARNING
• Always rinse the liquid end first before commencing maintenance and repair work if
hazardous or unknown media are used!
• When metering hazardous or unknown metering media, suitable protective equipment
(goggles, gloves ...) must be worn when working at the liquid end! Observe the safety
data sheets of the metering media!
• Switch off the pump control and close the compressed air supply line first before
starting any work at the pump!
Always depressurise the metering line!
Always empty and rinse the liquid end! Observe the safety data sheets of the metering
media!
12.1
Pump works, but no metering
Air collected in the liquid end
1. Vent the liquid end:
Set stroke length to 100% with adjustment (8) and then stop the pump
For PV type, open the vent valve (9) by approx. 1 turn anti-clockwise
For SS type, disconnect the metering line from the metering valve
Operate the metering pump for approx. 5 – 10 metering strokes or until a metering is
performed with each metering stroke
Adjust the required stroke length (8) with the pump in operation and check whether it still
meters
Close the vent valve (9) or close the metering line at the metering valve with the pump
stopped
2. Based on the installation examples and notes (page 16), check whether a proper installation
was performed
3. Check whether the union nut of the suction line, the valves and screws at the liquid end are
properly tightened
4. Check whether the suction line has been installed as a riser.
The activated fine ventilation does not work because the ventilation hole (ø 1.0mm) is blocked.
• Remove the star handle (9a) and open the vent screw (9) by approx. 2 turns anti-clockwise with
the pump in operation until the blockage is eliminated
• If this is not successful, disassemble the vent valve and the fine vent screw and clean all parts
(including the holes)
• Then, mount the vent valve and restore the original settings.
ProMinent
®
Advertisement
Table of Contents
