Ecolab DryExxEco Advanced-ETH Operating Instructions Manual page 182

Fault description
Pump running, insufficient
suction
No suction from pump following
repair
Conveyed medium coming out
of muffler
Diaphragm stretched
Leak between housing sections Tie rod loose
Muffler grey
Troubleshooting for Lub-O-DryExx® Diaphragm compressed air pump
Cause
physical limit exceeded
Cavitation
Pump performance exceeded /
valve body/seat blocked
Air pillow in suction/pressure line
dry intake against
counterpressure
Valve/filter in suction line closed
Valve/filter in pressure line closed open or clean
Container with conveyed medium
empty
Negative pressure in container
Wear on valve bodies
Suction line leaky
Suction line blocked
Air pillow on the pressure side
Valve body/ball blocked
Connections not correctly
secured
Valve body incorrect inserted
Diaphragm broken
System pressure
excessive negative pressure
Ice formation
O-ring on connection sleeve
damaged
Diaphragm chemically corroded
Diaphragms heavily stretched
Tension on assembly/pipe
connection
air humidity too high, ice
formation
83
Troubleshooting
Remedy
Correct installation
check, cool down
Correct installation or use
larger pump
bleed
where necessary, only
convey in circuit, dampen,
bleed
open or clean
fill/new container
ventilate
replace
seal
clean
Bleed pressure line
clean/replace
retighten, seal
correct
Replace diaphragm, clean
pump
Only generate pressure with
pump, check plant/valves,
replace diaphragms
Check suction line, open
valve
Improve air treatment
tighten, check pump
replace
replace
replace
release, correct tension, use
compensator
Improve air quality, warm
inlet air if necessary
Rev. 02-09.2017