10
Check the whole blast hose by hand for soft spots (reduced
wall thickness) and replace it
immediately
when soft spots are
detected.
Check the air line (air supply) and replace it when it is worn.
Check the gaskets of couplings for wear and replace them if
necessary.
5.4 Monthly check list
(1) Remote control valve RMS-1500
respective outlet valve
Check all fittings and connections of the remote control valve for
leakage.
6 Trouble-shooting
Problem
Probable cause
Remedy
(1) No air and no abrasive
comes out the nozzle.
Turned off compressor.
Turn on compressor.
Blocked moisture separator.
Check and clean.
Inlet valve RMS-
1500 doesn’t
work.
Close 3-way slide valve.
Depress deadman handle.
Check valves and control
hoses for loose connections.
(2) Air, but no abrasive comes
out the nozzle.
Closed metering valve.
Open it.
Moist abrasive blocks the flow of
abrasive at the bottom of the pot.
Several times open and close
choke valve rapidly.
Open the inspection door and
clean the pot.
Not enough air volume.
Use a bigger compressor.
(3) Irregular flow of abrasive
comes out the nozzle.
Incorrectly adjusted abrasive
metering valve.
Check adjustments.
Choke valve not fully opened.
Check and fully open it.
Blocked metering valve.
Open and clean metering valve.
