Graco EQ300C manual Ti24824a

Page 13

13.When the water level reaches the bung seal, rotate the handle to release the bung pin (this will cause the bung to pop up against the seal and close the bung).

Operation

15.Wait for pot pressure to increase. NOTE: It can take up to several minutes for the pot to pressurize.

14. Turn the selector valve to FILL.

NOTE: The water pump should begin cycling. If not, open the pot pressure regulator enough to cause the pump to run at 60 cpm.

NOTE: The auto vent/purge valve will allow all of the air trapped in the top of the pot to vent. When air stops venting, the pot pressure gauge will start to register pressure.

ti24824a

NOTE: The bung cannot be pushed down unless all of the pressure in the pot is released by opening the dump valve.

16.Set the pot pressure 30 psi (2.0 Bar, 0.2 MPa) higher than the intended blast pressure. Quickly open and close the dump valve after the pump stalls. Relieve pot pressure to 40 psi (2.7 Bar, 0.27 MPa) before closing the dump valve. Repeat until pot pressure is consistent.

17.Turn the selector valve to WASH.

18.Set the blast air pressure 30 psi (2.0 Bar, 0.2 MPa) lower than the pot pressure while blasting.

NOTE: In order to adjust the blast pressure, the blast control must be engaged. For the initial setting, leave the abrasive ball valve closed.

NOTE: Engage and release the blast control handle each time the blast regulator is adjusted.

19. Turn the selector valve to BLAST.

334667B

13

Image 13

Contents EcoQuip Vapor Abrasive Blast System Important Safety InstructionsRelated Manuals ModelsDust and Debris Hazard Burn Hazard Metric OEM System GuidelinesCompressor Size and Hose Length Minimum ID Metric EQ300C and EQ600C System Component IdentificationKey DataTrak ControlsDataTrak see DataTrak Controls, Pressure Relief Procedure Operation Checklist Before StartingConnecting the Blast Hose and Air Hose Setting Up the Equipment 10 gal 200-500 lb Ti24824a 0 0 0 8 8 0 0 0 3 Blasting on Higher Surfaces Blasting TipsGrit Size Blast Pressure Abrasive Dose Blast Angle General Metering Valve SettingsWood SteelUsing the Wash Feature Refilling the Pot with Abrasive Shutting Down Operation Winterizing the Equipment Problem Cause Solution TroubleshootingSee Cleaning the Auto-Vent Valve, See Repairing the Main Air RegulatorSee Repairing the Diaphragm Valve See Setting Up the Equipment,Procedure see Shutting Down, Intact. See Hose Schematic,Metering Valve Settings, Properly. See Hose Schematic,See Pressure Relief Procedure, Setting Up the Equipment,If flushing does not solve the problem, see Checking for Leaks Troubleshooting ExamplesPneumatic Blast Control Circuit Perform Pressure Relief Procedure, Repairing the Main Air RegulatorRepair Flushing the Diaphragm Valve Perform the Pressure Relief Procedure, Repairing the Diaphragm ValveCleaning the Auto-Vent Valve Replace Battery Replacing the DataTrak BatteryApproved Batteries Replace Fuse Replacing the DataTrak FuseApproved Fuses DataTrak Part Series Letter Fuse Required EQ300C and EQ600C PartsPressure POT EQ300C and EQ600C Parts ListEnclosure Part Description Qty Enclosure Parts ListPressure Pot Pressure Pot Parts ListRef. Part Description Qty Hose Schematic EcoQuip Skid Systems Vapor Abrasive Blast Systems and AccessoriesEcoQuip Trailer Systems Model Series BrakesTrailer Units Mobile/Skid UnitsModel Model DescriptionNozzles HosesModel Description Type Length Blast Control Common Spare Parts Other AccessoriesDimensions EQ300S Technical SpecificationsEQ600S Graco Information Graco Extended Warranty for EcoQuip Components