Use and Care Manual

40001, 40003, 40004, 40005 Assembly Instructions
Page 6
OPERATING INSTRUCTIONS
OPERATING TECHNIQUE:
1. Connect air hose to air inlet valve. Manufacturer recommends using minimum incoming air
hose of 1/2” I.D. Using an air hose smaller than 1/2” I.D. will restrict air volume and result in
poor unit operation. Prior to injection of air, be certain air inlet valve and nozzle valve are in
the OFF position. With Deadman Valve closed and closure plug in the UP position, open air
inlet valve allowing air to pressurize. Operating range of unit is 40 to 110 PSI. Note: For
proper nozzle selection, refer to nozzle selection chart below. After proper nozzle selection,
insert nozzle into retainer base. Set against washer and slide retainer nut over nozzle and
tighten by hand.
2. The Pressure Blaster is equipped with a unique semi-automotive pull-up closure design.
Manufacturer recommends a fine grade abrasive with granular size similar to that of table salt.
This assures proper flow and reduces the possibility of nozzle obstruction. When ready to
pressurize container, pull up closure and turn on incoming air. The internal air pressure will
seal the closure.
3. With the blaster pressurized and abrasive flow regulator valve at base of unit closed, open
choke valve allowing air to flow through by-pass hose to base of the unit. Then holding the
abrasive hose by nozzle retainer housing with nozzle directed away from unit and operator,
quickly squeeze the Deadman Valve fully open and adjust the regulator valve at base of tank
to bleed the abrasive into air flow. Slowly open regulator valve until abrasive material is
slightly visible. Once the regulator flow valve is adjusted to the desired setting, further
adjustment should only be required when changing grade of abrasive material or when a
nozzle with a different I.D. is used.
For best performance, the Deadman Valve should be opened and closed quickly. Note: The choke
valve located at the rear of the tank on the by-pass air line must always be open during blasting.
WARNING!
All persons except for the equipment user must stay clear of the blast machine. The user may
pressurize or depressurize the machine at any time. The noise generated by the sudden
release of compressed air while the machine is pressurized or depressurized may startle
bystanders, and may vent abrasive under pressure. Either condition could result in injury.