5
MANUAL - SANDBLASTERS - U100-U103
Revised 2006-02
OPERATING INSTRUCTIONS (continued)
4. OPERATING TIPS:
a) Always operate with hose and control “wide open”. Adjustment for suitable abrasive fl ow should be
made independently using the Sand Flow Control Valve (Item 11).
b) Make sure you match the right combination of abrasive type and mesh size, nozzle size and air pres-
sure to the particular job at hand.
c) Nozzles should be changed whenever they wear suffi ciently to lose their cutting power at lower than
80 PSI. Your efforts become ineffi cient after the nozzle orifi ce has worn to more than 11/2 times its
original diameter.
d) Use Tungsten Carbide nozzles for long, continuous operations.
e) If the unit has a Moisture Filter, check and drain it periodically by opening the valve at the bottom while
it is under pressure.
f) Repair the cause of any air leakage as soon as possible to avoid serious damage.
f) If an abrasive clog forms in the bottom of the tank, the Anti-clogging Valve (Item 17) may be used as
follows to remove the blockage:
• Open the Nozzle End Sut Off Valve and hold it open if necessary
• Make sure the Sand Flow Control is open
• Open the Air Shut Off Valve
• Open and close the Anti-clogging Valve repeatedly to send a series of air “pulses” down through the
tank. If the blockage remains, remove the Drain Plug (Item 13) and use a wire or rod to open the pas-
sage. For normal operation, leave the Anti-clogging Valve open.
5. REPLACEMENT OF HEAVY-WEAR PARTS: Keep a supply of quickly wearing consumable parts such
as ceramic nozzles, seal blocks, nozzle holder washers, plastic hood lenses etc on hand. Purchase
ahead of time if necessary.
6. NOZZLE SPECIFICATIONS: Sand and air consumption and the area cleaned depend on the type of
abrasive, air pressure, nozzle size and the condition of the surface to be cleaned.
NOZZLE
SIZE
MINIMUM
COMPRESSOR
AIR USED
(CFM AT 80 PSI)
SAND USED
(LB PER HOUR)
AREA CLEANED
(SQ FT PER MIN)
3/32”
5 HP
7
80 TO 100
0.5
1/8”
5 HP
30
200 TO 210
1 TO 1.5
5/32”
5 HP
30
200 TO 210
1 TO 1.5
3/16”
5-10 HP
45
300 TO 350
3.0 TO 3.5
1/4”
5-10 HP
80
500 TO 600
4.0 TO 4.5
5/16”
10-15 HP
125
800 TO 950
6.0 TO 7.0
7. MISCELLANEOUS:
a) The pressure vessels are manufactured to ASME standards.
b) All models come with a ½” ID Sand Hose.
c) Nozzle sizes range from 3/32” to 5/16”
d) Heavy steel grit or shot can be used with the ½” Sand Hose using 5/32” to ¼” nozzles.
e) For larger nozzles (3/16”, 5/16”) a ¾” ID Sand Hose is recommended.
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