Empire Abrasive Equipment Company
Step 4:
Adjust the blast pressure regulator to 40 psi. Insert each hand into a cabinet
glove and grip the blast hose firmly. Aim the hose into the container and press the
foot treadle. Blast for 30 seconds to remove all media from the blast hose.
Step 5:
Turn the ProFormer
™
system off. Clean both reclaimer screens, readjust the
Sure-Flo
®
grit valve, and close the reclaimer door. Dispose of all waste properly.
Step 6:
The system is ready for new media. Refer to section
2.1 Loading Media
,
section
3.2 Pressure system Media Flow Adjustment
, and section
3.3 Reclaimer
Adjustment
.
4.4 Pneumatic Controls
The ProFormer
™
system uses a patented pneumatic control circuit to protect workers,
workers environment, and activate the blast.
Step 1:
Turning the system snap switch on energizes the interlock solenoid valve,
permits air to enter the control air line to the foot treadle, illuminates cabinet lights
and start the fan motor.
Step 2:
The operator steps on the foot treadle opening a three way control air valve.
Air enters the door interlock supply tubing continuing to the door air jets. If the part
load/unload doors are closed, latched, and door air jets are sealed, the control air
lines pressurize and open the main blast air valve (and the pressure systems exhaust
valve to close). The opening of the main air valve starts the blast.
Step 3:
When the operator removes his foot from the foot treadle, the three way air
valve close, shutting off air to the controls, and exhausting all down stream air. The
control air line pressure bleeds from the door interlock supply tubing, main blast air
valve (and the pressure system exhaust valve). This permits the main blast air valve
to close (and the pressure system exhaust valve to open) stopping the blast.
Step 4:
When a part load/unload door is opened, the pad covering the door interlock
air jet is unseated. When the foot treadle is pressed with a door open, control air
bleeds from the door air jet opening, preventing the control circuit from pressurizing.
The main blast air valve will not open, and blasting will not occur.
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