8.3 Troubleshooting table
Error
Cause
Remedy
Air in the material container
Suction line loose/leaking
Check intake line, tighten if
necessary.
Seals faulty/worn
‘Replace valve parts’
on page 30
Diaphragm faulty
Replace diaphragm (
).
Diaphragm pump runs
unevenly
Foreign bodies in the ball valve
or the valve is worn
Remove the valve parts and
check for damage, replace any
parts as necessary (
).
Air is sucked in
Check suction direction
Suction line blocked
Check intake line, clean if nec-
essary.
Valve parts soiled/leaking
Clean/replace valve balls/valve
seat (
The diaphragm pump does not
start up
No compressed air available
Switch on or check com-
pressed air supply.
Pressure controller/control
valve faulty
Replace the pressure con-
troller/control valve (
pressure controller/control
valve’ on page 36
Membrane pump works but no
pressure builds up or no suc-
tion
Intake screen soiled
Clean intake screen.
Suction hose is kinked/leaking
Check suction hose
Valve parts soiled/worn
Clean or replace the valve
parts (
Suction device leaking
Checking the seals.
Valve blocked
Clean diaphragm pump (
O-ring faulty/worn
‘Replace valve parts’
on page 30
Pressure fluctuations during
operation or unusual running
noises
Diaphragm worn
Replace diaphragm (
).
Diaphragm pump MP-560
ENGLISH
Article No. 200-0192
GB–35
