6
MANUAL - SANDBLASTERS - U100-U103
Revised 2018-12
SEAL BLOCK ADJUSTMENT:
1. Proper adjustment is important to ensure effi cent operation and prevent excessive wear of the Seal
Block.To accomodate size variations in the manufacturing of ceramic nozzles, elongated adjustment holes
are provided for seating the Seal Block. Fix the Seal Block in place by tightening the Seal Block Nut so
that the end surface of the Nozzle is in close contact with the Seal Block when the Control Lever is in the
closed position. There should be no gap between the two surfaces. Air leakage will be minimal but some
noise from escaping air is normal.
2. Each Seal Block can be used four times by changing the surface used. To change the surface, loosen
the lock nut and rotate the block to a new surface.
3. When a new nozzle is installed, the Seal Block must be readjusted to fi t tightly against the new nozzle.
SAFETY SHUT OFF CONTROL - U5000F
1. OPERATION: To open the Control, squeeze the lever quickly. To close, release the lever quickly. To
avoid exposing the Seal Block to abrasive, do not open or close the Control slowly. Use the U5000F as
a working control only. When the job is fi nished, close the Sand Flow Control Valve (Item 11) and the Air
Shut Off Valve (Item 8), then release the air pressure by opening the Pressure Relief Valve by inserting a
fi nger into the ring and pulling downward.
2. REPLACEMENT:
a) Remove the Handle Tube from the Retainer Nut by turning the nut counter-clockwise.
b) Make sure the end of the hose is cut fl at and square.
c) Apply grease to the outside of the hose for approximately 21/2” from the end.
d) Insert the hose into the Handle Tube making sure it is pushed fi rmly into the tube approximately 21/2”.
e) Secure the hose using the six screws provided.
f) Hold the Retainer Nut using a bench vise or vise grips and attach the Handle Tube by turning it clock-
wise with a pipe wrench. Make sure the Tube is fi rm and tight.The Seal Block is pre-adjusted at the fac-
tory to the Ceramic Nozzle supplied. If necessary, adjust the Seal Block as above to fi t your nozzle and
minimize air leakage.
