48
Original operation manual
AirlessPhoenixGX_BA_en_1803 • 0550010-en • jw
Eliminating operational faults
Fault
Possible cause
Remedy
The pump does not run consistently (recognizable by the dif
ferent stroke speeds of
the upstrokes and downstrokes) and does not reach the required
spraying pressure.
–
Viscosity of the spraying material
is too high (loss of suction).
➤
Dilute spraying material.
➤
Use a larger pump.
➤
Improve fluidity e.g. by heating
the material
–
Suction system is leaking
(fluctuations in spray jet).
➤
Check the gaskets on all threaded connections of the suction tube and the suction hose and replace if necessary (see the spare parts list for
the suction hose and the direct intake).
–
Bottom valve is leaking (pump
only stops in the upstroke when spray gun is closed).
➤
Unscrew the bottom valve and clean
the ball and the seat thoroughly
, if
necessary replace the ball or the valve seat.
–
Piston valve is leaking (pump
only stops in the downstroke when spray gun is closed).
➤
Clean and check the ball and seat in the double piston, replace the valve
seat as required.
–
Lower or upper packing leaks (wear).
➤
Replace the packing.
Material runs out of the overflow
on the air motor
.
–
Packings are worn.
➤
Replace the packing.
Note: Do not close the overflow!