Troubleshooting; Corrective Action - SATA HKU Mode D'emploi

SATA HKU | 11
8. Trouble-shooting
Malfunction
Pump does not work
Pump reciprocating but not delivering
Pump runs irregularly
Oil/spraying material is coming out of the
exhaust silencer
Pump is running despite the outlet being
closed.
Compressor performance drops during
pump operation
Cause
No or low air pressure
Faulty air motor
Foreign object jamming movement of cen-
tral bar.
Clogging of material hose, shut-off valve,
spray gun or filter.
Pump pressure regulator wrongly adjusted
or defective.
Barrel empty
Float valve jammed (if fitted).
Foot vlave inoperative
Piston valve or seals worn.
Too big air resistance on the suction side. Lower the air pressure in order to reduce
Packings are chafed.
Suction hose or suction tube does not seal
properly, pump takes in air.
Packing between air motor and pump is
worn out or damaged.
Packing on the lower piston assembly is
worn out or damaged.
Dirt in the bottom valve or in the lower
piston assembly.
Compressor performance insufficient

Corrective Action

Check the air line valve, regulator and
quick coupler.
Check air motor mechanism. Check seals
as required replace any faulty parts.
Check for free movement and for foreign
objects in piston valve etc.
Remove clogging
Check material pressure regulator.
Replace barrel
Check float valve free to move as required.
Check spring and ball for correct opera-
tion and seating. Check for foreign objects
jammed in foot vlave.
Check for foreign objects in piston valve
seat. Check seals for wear and damage.
the speed of the pump or mount a speed
regulator.
Replace packings (Attention: Repair to be
carried out by the manufacturer only.)
Seal with teflon band.
See Service to air motor
See Service to pump mechanism
Use more performant compressor
EN