Troubleshooting For Lub-O-Dryexx ® Diaphragm Compressed Air Pump - ECOLAB DryExxEco Advanced-ETH Betriebsanleitung

Troubleshooting
Troubleshooting for Lub-O-DryExx® Diaphragm compressed air pump
Fault description
Muffler black
Pump is not working, air not
warming up
12.2
Troubleshooting for Lub-O-DryExx
Lub-O-DryExx
WILDEN compressed air diaphragm pump type P.025
Fault description
Pump not working or
running too slowly
Pump is running, but is
not conveying any or
only little fluid.
Rev. 02-09.2017
Cause
contaminated/oily compressed air Improve air quality, install
Air controller stuck
Foreign body/contamination
chemical effects (o-rings swollen) check, correct
Valve in conveyed direction
closed
® Article No. 182831
Cause
Incorrect
pressures
Air filter not clear
Air impurities
Compressed air
line blocked
Ball return valves
stuck
Diaphragm
broken
Blockage in the
vent opening
Cavitation of the
pump
Remedy
fine filter in front of the
pump in the inlet line
clean, replace
clean, replace if necessary,
provide better air quality
open
®
Diaphragm compressed air pump
Remedy
Ensure that the drive pressure is at least 0.35 bar
(5 ps) above the starting pressure and that the
differential pressure (the difference between the
drive pressure and fluid counterpressure) is at
least 0.7 bar (10 ps).
Check the air filter in the compressed air line for
foreign bodies.
Check the pump for extreme air leaks (blow out).
This would be a sign of worn seals/holes in the
compressed air valve, pilot valve, piston rod.
Disassemble the pump and check for blockages in
the compressed air channels and for foreign
bodies preventing the movement of internal parts.
Check pump for stuck ball return valves. If the
product being conveyed is not compatible with the
pump elastomers, these can swell up. Replace
ball return valves and seals with parts made from
appropriate elastomers. The valve balls also
become smaller with increasing wear and can
therefore become stuck in the valve seats. In this
case, replace valve balls and valve seats.
Check pump for broken internal diaphragm plate.
In this case, the pilot piston would no longer move.
Remove the plug from the vent opening for
outgoing air muffler.
Check pump for cavitation; slow down the pump
speed so that highly viscous material can flow into
the pump chambers.
84