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308612
Operation
Pressure Relief Procedure
FLUID INJECTION HAZARD
To reduce the risk of serious bodily inju-
ry, including fluid injection,splashing in
the eyes or on the skin, or injury from
moving parts, always follow this procedure when-
ever you shut off the pump, when checking or serv-
icing any part of the dispensing system, when
installing, cleaning, or changing part of the valve,
and whenever you stop dispensing.
WARNING
1. Shut off the air supply to the bead tank. Bleed the
bead tank.
2. Close the bleed-type master air valve (required
with air-powered pumps).
3. Actuate the dispensing valve to relieve pressure.
4. Leave the drain valve(s) open until you are ready
to dispense again.
If you suspect that the dispensing valve or hose is
completely clogged, or that pressure has not been fully
relieved after following the steps above, very slowly
loosen the hose end coupling and relieve pressure
gradually, then loosen completely. Now clear the valve
or hose.
Adjustments
Set the actuating air to at least 50 psi (3.5 bar) and
start the pump. Set the glass bead supply tank pres-
sure between 30 psi and 75 psi for desired flow rate.
Note: Bead delivery will vary with each application.
Always test the system for actual delivery and adjust
air pressure or nozzle size as needed.
Application Data
See Road Lazer System Manual 308611.
Nozzle Size Selection
Use the Nozzle Size Selection and Bead Delivery
Tables to select the size of nozzle for the travel speed
and bead coverage to be used. These tables are
based on a 15 mil paint application.
1. Go to Bead Delivery (Lb/Min) Table and select:
a. Speed in MPH or KPH row.
b. Bead coverage in Pounds Per Gallon
column.
c. Value at intersection of MPH row and Pounds
Per column is bead delivery in lb/min.
2. Go to Nozzle Size Selection Table and select:
a. Bead Delivery (lb/min) column determined by
Bead delivery (lb/min) value.
b. Psi value Glass Bead Tank psi row.
c. Curve (1, 2, 3 or 4) at intersection of Glass
Bead Tank psi row and Bead Delivery (lb/min)
column is nozzle size value.
d. Select nozzle size that allows range of adjust-
ment for more or less flow.