Piusi MA Série Mode D'emploi page 67

PROBLEM
Pump cycles are slow
Pump functions irregu-
larly
The pump stalls
Pump does not distribut-
edelivery value stated on
table
POSSIBLE SOURCE
Fluid is too viscous.
Delivery hose is ob-
structed.
Intake is obstructed.
Internal pneumatic
exchanger is worn or
faulty.
Shaft is worn.
Ice on discharge gate.
Lack of air flow.
Internal exchanger
dirty.
Intake obstructs dur-
ing operation.
Dirty air, containing
condensation or oil.
Insufficient air flow or
pressure.
Faulty distributor.
Stop procedure not
complied with.
Product intake hose is
badly connected.
Piping is clogged.
Fluid is too viscous.
67/208
ADVICE
No remedy.
Check and clean.
Check and clean.
Replace pneumatic ex-
changer.
Replace pneumatic ex-
changer.
Dehumidify and filter air.
Check all air control de-
vices and in particular
Snap-On couplings.
Replace.
Replace intake hose.
Check air line.
Check pressure using a
pressure gauge installed
on the pump when it is
running: see page 56.
if the pressure at that
point is too low in rela-
tion to the network pres-
sure, check all air fittings,
especially snap-on ones.
Check if all air control
devices have sufficient
flow rate. WARNING: in
90% of cases, stall oc-
currences are caused by
snap-on fittings.
Replace.
Comply with stop pro-
cedure.
Check.
Check and clean.
Install larger piping es-
pecially on the intake
side and decrease pump
cycles.
EN