Problem: NO AIR COMES OUT FROM THE PROJECTOR (devesting)
Possible cause Remedy
The internal projector nozzle is
clogged. Remove the cap and clean the injector.
Solenoid valve is clogged.
Close air inlet, remove the coil and the core and clean;
eventually get in touch with our Technical Service.
Problem: NOZZLE-HOLDER CAP COMES OUT DURING WORK (devesting)
Possible cause Remedy
Both piping and nozzle are clogged. Close up the end of the nozzle and press the foot-
control; the operating air flow will thus be inverted,
eliminating any obstruction from inside the pipes.
Should this irregularity repeat too often, remove
abrasive from the hopper and filter it.
Worn out and pulverised abrasive. Replace the abrasive, as this could be mixed with fine
particles or investment residuals which will never go
through the nozzle spraying hole..
Problem: INTERNAL AIR LEAKAGE
Possibile causa Azione correttiva
Condensate discharge on the filter.
The condensate discharge is carried out by the lifting
of a ball cock. A sufficient level of pressure must be
provided for the valve to close.
Internal pipes are disconnected
Check condition of the piping. Polyethylene pipes
might not be perfectly calibrated; try to cut out a small
portion from the end of the pipe and insert it into the
pipe-fitting; if needed, replace the pipe.
Problem: THE BLASTING JET IS UNSTEADY
Possible cause Remedy
Nozzle is clogged or worn out.
Unscrew nozzle fixing nut, clean both the hole and
microprojector components (especially the thread) -
re-assemble without forgetting the seal washer.
If necessary, replace the damaged parts.
Microprojector feeding pipe is worn
out, bent or clogged If the pipe is worn out or bent, replace it. If it is
clogged, disassemble the nozzle and let air come out.
The abrasive mixture is too rich in
aluminium oxide, i.e. loss of
sharpness
Abrasive container is overfilled, discharge it.
Pipe bending under the containers may collect
abrasive at the end of the work, when the valve
releases pressure; it is possible to limit this reaction
reducing this pipe bending at the minimum.
Damp aluminium oxide causing bad
flowing. Empty the tank, possibly disconnect it from the
machine and turn it upside down, blow with clean air
in order to dry up all the internal pipings, then heat
and dry up the abrasive product and fill in again.
Compressed air filled with
condensation or oily particles. Fine abrasive compounds are particularly sensitive to
moisture and, as mechanic pickling agents, they hold
the polluting agents. Therefore it is important to
protect the efficiency of the product by installing
adequate filtering and drying systems on the air
installation.
