PERIODIC MAINTENANCE
CAUTION! Do not attempt to perform any maintenance or service on your PHX-150
unless safety guidelines and lock out/tag out procedures have been satisfactorily met!
Replacing Airlock Critical Components
Diminished performance or a noticeable drop in blast pressure at the gun may indicate a
worn or damaged component in the airlock. Most airlock problems are typically caused
by a foreign object (airborne or otherwise) falling through the hopper pellet screen,
mixing with the dry ice pellets, and becoming lodged inside the airlock or doing damage
as it passes through to the blast hose and gun
.
(Note: You can avoid unnecessary
expense and repairs by closing the hopper lid after filling with ice and prior to
blasting.)
In order to properly inspect or replace the critical components, the airlock
assembly must be removed from the unit. To do this:
1. Remove air supply hose from the PHX-150. Also remove the gun and blast hose
assembly if attached. (pic 1)
2. To avoid spillage, remove the lubricator bowl/housing and set aside. (pic 2)
3. Carefully place the unit flat on the ground with the control panel facing down.
(pic 3). Be careful that hinged metal lid does not “flop” backwards suddenly during this
procedure.
4. Detach the inlet blast air hose coupling from airlock assembly inlet. (pic 4)
5. Remove the airlock motor air supply line from the push fitting. (pic 5)
6. Remove the large cotter pin from the airlock retaining latches. (pic 6)
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Page 21
Pic 1
Pic 2
Pic 3
Pic 4
Pic 5
Pic 6
