Shopping Cart IconCart

EcoQuip 2 EQp Products Troubleshooting Advice

We do our best to answer your product-related questions in an informative and easy to understand manner. Below are several frequently asked questions from our customers.

Frequently Asked Questions

  • Open the air supply valve.
  • Make sure the air compressor is capable of supplying the minimum air flow requirement for your system (see Technical Specifications in manual).
  • Make sure the air inlet pressure gauge reads 6.8–10.3 bar, 0.68–1.03 MPa (100-150 psi).
  • If the gauge does not read 6.8-10.3 bar (100-150 psi), check the air compressor for proper setup.
  • Make sure the air inlet filters are clean, and replace if necessary.
  • Systems with water tanks:
    • Make sure the water tank is full and the inlet ball valve is open.
    • Clean or replace water inlet filter if necessary.
    • Make sure all fittings connections are tight.
  • Systems with pressurised supply connection:
    • Ensure water supply connection is connected and pressurised.
    • Check that water supply meets appropriate pressure and flow requirements (see setting up the equipment in the manual).
    • Ensure all fitting connections are tight.
    • Check inlet water pressure regulator for proper flow direction installation (see Parts in manual).
    • Check inlet water pressure regulator screen filter for debris, clean if possible.
    • Replace regulator if no flow can be passed through regulator.
    • Make sure the water inlet pressure regulator is not used if siphon feeding or using an external water tank.
  • Disengage the blast control switch.
  • Adjust the pump inlet air pressure regulator until the pump air pressure regulator gauge reads 3.4 bar, 0.34 MPa (50 psi).
  • If you are unable to attain this setting, check the air inlet filters and make sure the supply air pressure is greater than or equal to 3.4 bar (50 psi).
  • If the above steps do not resolve issue, replace the pump air pressure regulator.
  • Rotate 3-way selector valve to WASH position.
  • Verify that pump stalls.
  • If pump continues to creep or will not prime, refer to manual 3A5023 for pump service.
  • Make sure the pop-up is clean and free of debris in the o-ring sealing area.
  • Check for proper pop-up alignment in the closed position (there should be no gaps between the o-ring and the pop-up).
  • Remove the o-ring and make sure the o-ring gland is clear of debris.
  • Replace the o-ring and/or pop-up if worn.
  • Adjust the water pressure regulator until the pot pressure gauge reads 12.75 bar, 1.275 MPa (185 psi).
  • If this adjustment is not possible, service the water pressure regulator (see manual 309474).
  • When you have finished blasting, perform wash until all of the abrasive is flushed from the blast hose (see Using the Wash Feature in manual).
  • Turn the selector valve to OFF, and with the abrasive ball valve closed, continue to blast until all water is cleared from the hose.
    • This is to dry the inside of the hose for storage.
  • Perform Pressure Relief Procedure.
    • Close the abrasive ball valve.
    • Close the compressor supply air valve, then turn the compressor off.
    • Make sure the supply pressure gauge reads 0 bar/psi, then close the air supply valve.
    • Disconnect the system air inlet hose.
    • Turn the selector valve to OFF.
    • Close the fill/flush valve and disconnect the pressurised water supply.
    • Open the pot dump valve until the pot pressure gauge reads 0 bar/ psi.
  • With the pot pressurised, the selector valve in the BLAST position, and the abrasive ball valve closed, engage the blast control switch and check to make sure the pump is stalled.
  • If the pump rod is cycling, replace the abrasive ball valve.
  • With the pot pressurised and the abrasive ball valve open, check to make sure the pump is stalled.
  • If the pump rod is cycling, replace the pinch hose (see Replacing the Pinch Hose in manual).
  • Close the fill/flush valve.
  • Adjust the water pressure regulator to 12.75 bar, 1.275 MPa (185 psi).
  • If this adjustment is not possible, service the water pressure regulator (see manual 309474).
  • Replace the pressure relief valve if weeping occurs at or below 12.75 bar, 1.275 MPa (185 psi).
  • Adjust the blast regulator to the desired pressure while the blast control is engaged.
  • See Tubing Schematic in manual.
  • Check for leaks at connection points.
  • Clean or replace the adjustable blast air regulator.
  • Disassemble the main air regulator and inspect components.
  • Replace or repair parts as necessary. See Parts in manual.
  • Disengage the Emergency Stop.
  • Make sure the air compressor is capable of supplying the minimum air flow requirement for your system (see Technical Specifications in manual, for more information).
  • Make sure the air inlet pressure gauge reads 6.8–10.3 bar, 0.68–1.03 MPa (100-150 psi).
  • If the gauge does not read 6.8–10.3 bar (100–150 psi), check the air compressor for proper setup (consult your air compressor manual, see Related Manuals in manual).
  • Actuate the blast control switch and check for proper spool valve actuation in the 4-way solenoid valve.
    • If no actuation occurs, check the blast control switch and twin-line by disconnecting the yellow tube at the enclosure male quick disconnect and engage the control switch.
    • If no air comes from the fitting, check for signal air at the blast control switch.
    • Replace the pneumatic blast control switch if signal air does not pass through the valve when the handle is depressed.
  • If the switch is functioning, ensure that the yellow tubing inside the control box is properly connected and clear any obstructions.
  • If the tubing is clean, replace the 4-way solenoid valve.
  • Connect to a water supply.
  • Close the abrasive ball valve.
  • Turn the selector valve to OFF.
  • Open the air supply valve.
    • NOTE: The system will not work unless the air supply valve is open.
  • Fill the pot with water. Use the fill/flush valve or an external source.
  • Open the pot dump valve.
  • Add abrasive material (see Technical Specifications, in manual for capacity information).
  • Close the pot dump valve.
  • Open the fill/flush valve until water is above the pop-up seal, then pull up on the pop-up handle to pressurise the pot.
  • Close the fill/flush valve once the pot is pressurised.
    • NOTE: If using a non-pressurised water supply, fill the pot with water while in BLAST mode or use an external source.
  • Turn the selector valve to WASH until the pump stops cycling to remove air from the wash tubing.
  • Turn the selector valve to BLAST.
  • Open the abrasive metering valve 1/4 turn.
  • Check the pot pressure gauge to ensure the pot is pressurised.
  • If the pot is not pressurised, pull up on the pop-up handle while the pump is cycling.
  • Engage the blast control switch and set the blast air pressure to the desired pressure.
  • Open the abrasive ball valve.
  • While blasting, set the abrasive metering valve until the desired production is achieved.
    • NOTE: You may have to wait 1-2 minutes for the abrasive material to reach the nozzle.
  • Connect to a water supply.
  • Close the abrasive ball valve.
  • Turn the selector valve to OFF.
  • Open the air supply valve.
    • NOTE: The system will not work unless the air supply valve is open.
  • Fill the pot with water. Use the fill/flush valve or an external source.
  • Open the pot dump valve.
  • Add abrasive material (see Technical Specifications, in manual for capacity information).
  • Close the pot dump valve.
  • Open the fill/flush valve until water is above the pop-up seal, then pull up on the pop-up handle to pressurise the pot.
  • Close the fill/flush valve once the pot is pressurised.
    • NOTE: If using a non-pressurised water supply, fill the pot with water while in BLAST mode or use an external source.
  • Turn the selector valve to WASH until the pump stops cycling to remove air from the wash tubing.
  • Turn the selector valve to BLAST.
  • Open the abrasive metering valve 1/4 turn.
  • Check the pot pressure gauge to ensure the pot is pressurised.
  • If the pot is not pressurised, pull up on the pop-up handle while the pump is cycling.
  • Engage the blast control switch and set the blast air pressure to the desired pressure.
  • Open the abrasive ball valve.
  • While blasting, set the abrasive metering valve until the desired production is achieved.
    • NOTE: You may have to wait 1-2 minutes for the abrasive material to reach the nozzle.
  • Close the abrasive ball valve.
  • Turn the selector valve to OFF.
  • Open the pot dump valve to drain water from the pot.
    • NOTE: Be prepared to capture the water that will be drained from the pot. All disposals must comply with national and local regulations.
  • Add the abrasive (see Technical Specifications, in manual for capacity information).
  • Close the pot dump valve.
  • Open the fill/flush valve until water is above the pop-up seal, then pull up on the pop-up handle to pressurise the pot.
  • Close the fill/flush valve once the pot is pressurised.
    • NOTE: If using a non-pressurised water supply, fill the pot with water while in BLAST mode or use an external source.
  • Turn the selector valve to WASH until the pump stops cycling to remove air from the wash tubing.
  • Turn the selector valve to BLAST.
  • Open the abrasive metering valve 1/4 turn.
  • Check the pot pressure gauge to ensure the pot is pressurised. If the pot is not pressurised, pull up on the pop-up handle while the pump is cycling.
  • Engage the blast control switch and set the blast air pressure to the desired pressure.
  • Open the abrasive ball valve.
  • While blasting, set the abrasive metering valve until the desired production is achieved.
    • NOTE: You may have to wait 1-2 minutes for the abrasive material to reach the nozzle.
  • Engage the blast control switch and check for actuation of the pinch valve.
  • If there is no actuation, disconnect the orange tubing at the pinch valve.
    • If the pinch valve opens and source air is coming from the orange tubing, confirm that the tubing is correctly routed.
    • If the pinch valve does not open, replace it.
  • If the pinch valve opens and there is no source air coming from the tubing, inspect the mufflers on the 4-way valve for debris.
    • If debris is not present, clean or replace the 4-way valve.
  • Perform Draining the Pot procedure (in manual) to remove as much media and water as possible.
  • Perform Pressure Relief Procedure, in manual.
  • Disconnect the abrasive hose at the control box, and disconnect the blast hose. Shine a torch through the blast outlet connection. Inspect the interior of the pinch hose and blast circuit outlet for debris. If debris or packed-out media is found, remove then reinstall the blast hose and abrasive hose and resume blasting.
  • Remove the pot funnel assembly to gain access to the inside of the pot.
  • If visible, remove large debris and proceed to Step 11, If water and media still remain in the pot and no debris is visible, proceed to Step 6.
  • Remove the abrasive hose from the control box and pot at the cam-lock fittings. If media flows freely from the pot, debris is stuck in the abrasive hose. Clear the hose and reinstall.
  • If media is still stuck in the pot, loosen the clamp to remove the outlet manifold.
  • Probe inside the pot from the outlet until the debris is found.
  • Remove debris, inspect the gasket and replace if damaged. Reinstall the outlet manifold and torque the clamp to 19.5 N•m (15 ft-lb).
    • NOTE: When debris is cleared, media should freely flow from the pot outlet. The pot will need to be completely flushed before the outlet manifold can be reinstalled. All disposals must comply with national and local regulations.
  • Connect the abrasive hose at the cam-lock connections.
  • Inspect the post funnel assembly gaskets and replace if necessary. Reinstall the pot funnel assembly.
  • Perform Draining the Pot procedure (in manual) to remove as much media and water as possible.
  • Perform Pressure Relief Procedure, in manual.
  • Disconnect the abrasive hose at the control box, and disconnect the blast hose. Shine a torch through the blast outlet connection. Inspect the interior of the pinch hose and blast circuit outlet for debris. If debris or packed-out media is found, remove then reinstall the blast hose and abrasive hose and resume blasting.
  • Remove the pot funnel assembly to gain access to the inside of the pot.
  • If visible, remove large debris and proceed to Step 11. If water and media still remain in the pot and no debris is visible, proceed to Step 6.
  • Remove the abrasive hose from the control box and pot at the cam-lock fittings. If media flows freely from the pot, debris is stuck in the abrasive hose. Clear the hose and reinstall.
  • If media is still stuck in the pot, loosen the clamp to remove the outlet manifold.
  • Probe inside the pot from the outlet until the debris is found.
  • Remove debris, inspect the gasket and replace if damaged. Reinstall the outlet manifold and torque the clamp to 19.5 N•m (15 ft-lb).
    • NOTE: When debris is cleared, media should freely flow from the pot outlet. The pot will need to be completely flushed before the outlet manifold can be reinstalled. All disposals must comply with national and local regulations.
  • Connect the abrasive hose at the cam-lock connections.
  • Inspect the post funnel assembly gaskets and replace if necessary. Reinstall the pot funnel assembly.
  • With the blast control disengaged, allow the pot to pressurise and wait for the pump to stall.
  • If the pot pressure gauge does not reach 12.75 bar, 1.275 MPa (185 psi), see the “Unable to fill or pressurize the pot with water” problem listed in this table.
  • Make sure the air compressor is capable of supplying the minimum air flow requirement for your system (see Technical Specifications in manual, for more information).
  • Make sure the air inlet pressure gauge reads 6.8–10.3 bar, 0.68–1.03 MPa (100-150 psi).
  • If the gauge does not read 6.8–10.3 bar (100–150 psi), check the air compressor for proper setup (consult your air compressor manual, see Related Manuals in manual).
  • Disassemble the main air regulator and check for obstructions. 
  • Replace or repair parts as necessary (see Parts, in manual).
  • Actuate the blast control switch and check for proper spool valve actuation in the 4-way solenoid valve.
    • If no actuation occurs, check the blast control switch and twin-line by disconnecting the yellow tube at the enclosure male quick disconnect and engage the control switch.
    • If no air comes from the fitting, check for signal air at the blast control switch.
    • Replace the pneumatic blast control switch if signal air does not pass through the valve when the handle is depressed.
  • If the switch is functioning, ensure that the yellow tubing inside the control box is properly connected and clear any obstructions.
  • If the tubing is clean, replace the 4-way solenoid valve.
  • Make sure the compressor meets minimum flow requirements and is operating properly.
  • See Technical Specifications in manual for more information.
  • Disassemble the main air regulator and check for obstructions.
  • Replace or repair parts as necessary (see Parts, in manual).
  • Actuate the blast control switch and check for proper spool valve actuation in the 4-way solenoid valve.
    • If no actuation occurs, check the blast control switch and twin-line by disconnecting the yellow tube at the enclosure male quick disconnect and engage the control switch.
    • If no air comes from the fitting, check for signal air at the blast control switch.
    • Replace the pneumatic blast control switch if signal air does not pass through the valve when the handle is depressed.
  • If the switch is functioning, ensure that the yellow tubing inside the control box is properly connected and clear any obstructions.
  • If the tubing is clean, replace the 4-way solenoid valve.
  • Make sure the air compressor is capable of supplying the minimum air flow requirement for your system (see Technical Specifications, in manual).
  • Make sure the air inlet pressure gauge reads 6.8–10.3 bar, 0.68–1.03 MPa (100-150 psi).
  • If the gauge does not read 6.8–10.3 bar (100-150 psi), check the air compressor for proper setup (consult your air compressor manual, see Related Manuals, in manual).
  • Make sure the air inlet filters are clean and replace if necessary.
  • When you have finished blasting, perform wash until all of the abrasive is flushed from the blast hose (see Using the Wash Feature, Page 16).
  • Turn the selector valve to OFF, and with the abrasive ball valve closed, continue to blast until all water is cleared from the hose. This is to dry the inside of the hose for storage.
  • Perform Pressure Relief Procedure.
  • Close the abrasive ball valve.
  • Close the compressor supply air valve, then turn the compressor off.
  • Make sure the supply pressure gauge reads 0 bar/psi, then close the air supply valve.
  • Disconnect the system air inlet hose.
  • Turn the selector valve to OFF.
  • Close the fill/flush valve and disconnect the pressurised water supply.
  • Open the pot dump valve until the pot pressure gauge reads 0 bar/ psi.
  • Connect to a water supply.
  • Close the abrasive ball valve.
  • Turn the selector valve to OFF.
  • Open the air supply valve.
    • NOTE: The system will not work unless the air supply valve is open.
  • Fill the pot with water. Use the fill/flush valve or an external source.
  • Open the pot dump valve.
  • Add abrasive material (see Technical Specifications, in manual for capacity information).
  • Close the pot dump valve.
  • Open the fill/flush valve until water is above the pop-up seal, then pull up on the pop-up handle to pressurise the pot.
  • Close the fill/flush valve once the pot is pressurised.
    • NOTE: If using a non-pressurised water supply, fill the pot with water while in BLAST mode or use an external source.
  • Turn the selector valve to WASH until the pump stops cycling to remove air from the wash tubing.
  • Turn the selector valve to BLAST.
  • Open the abrasive metering valve 1/4 turn.
  • Check the pot pressure gauge to ensure the pot is pressurised.
  • If the pot is not pressurised, pull up on the pop-up handle while the pump is cycling.
  • Engage the blast control switch and set the blast air pressure to the desired pressure.
  • Open the abrasive ball valve.
  • While blasting, set the abrasive metering valve until the desired production is achieved.
    • NOTE: You may have to wait 1-2 minutes for the abrasive material to reach the nozzle.
  • Close the abrasive ball valve.
  • Turn the selector valve to OFF.
  • Open the pot dump valve to drain water from the pot.
    • NOTE: Be prepared to capture the water that will be drained from the pot. All disposals must comply with national and local regulations.
  • Add the abrasive (see Technical Specifications, in manual for capacity information).
  • Close the pot dump valve.
  • Open the fill/flush valve until water is above the pop-up seal, then pull up on the pop-up handle to pressurise the pot.
  • Close the fill/flush valve once the pot is pressurised.
    • NOTE: If using a non-pressurised water supply, fill the pot with water while in BLAST mode or use an external source.
  • Turn the selector valve to WASH until the pump stops cycling to remove air from the wash tubing.
  • Turn the selector valve to BLAST.
  • Open the abrasive metering valve 1/4 turn.
  • Check the pot pressure gauge to ensure the pot is pressurised. If the pot is not pressurised, pull up on the pop-up handle while the pump is cycling.
  • Engage the blast control switch and set the blast air pressure to the desired pressure.
  • Open the abrasive ball valve.
  • While blasting, set the abrasive metering valve until the desired production is achieved.
    • NOTE: You may have to wait 1-2 minutes for the abrasive material to reach the nozzle.
  • Remove the nozzle and inspect for blockage, build-up or damage.
  • Replace if necessary.
  • Perform Draining the Pot procedure (in manual) to remove as much media and water as possible.
  • Perform Pressure Relief Procedure, in manual.
  • Disconnect the abrasive hose at the control box, and disconnect the blast hose. Shine a torch through the blast outlet connection. Inspect the interior of the pinch hose and blast circuit outlet for debris. If debris or packed-out media is found, remove then reinstall the blast hose and abrasive hose and resume blasting.
  • Remove the pot funnel assembly to gain access to the inside of the pot.
  • If visible, remove large debris and proceed to Step 11. If water and media still remain in the pot and no debris is visible, proceed to Step 6.
  • Remove the abrasive hose from the control box and pot at the cam-lock fittings. If media flows freely from the pot, debris is stuck in the abrasive hose. Clear the hose and reinstall.
  • If media is still stuck in the pot, loosen the clamp to remove the outlet manifold.
  • Probe inside the pot from the outlet until the debris is found.
  • Remove debris, inspect the gasket and replace if damaged. Reinstall the outlet manifold and torque the clamp to 19.5 N•m (15 ft-lb).
    • NOTE: When debris is cleared, media should freely flow from the pot outlet. The pot will need to be completely flushed before the outlet manifold can be reinstalled. All disposals must comply with national and local regulations.
  • Connect the abrasive hose at the cam-lock connections.
  • Inspect the post funnel assembly gaskets and replace if necessary. Reinstall the pot funnel assembly.
  • Close the fill/flush valve.
  • The media is too fine, use a coarser media.
  • Decrease the blast pressure and re-evaluate the dust level.
  • If possible, use at least a 40 mesh abrasive material.
  • Otherwise, decrease the CPM set point until the pattern improves.
  • Connect to a water supply.
  • Close the abrasive ball valve.
  • Turn the selector valve to OFF.
  • Open the air supply valve.
    • NOTE: The system will not work unless the air supply valve is open.
  • Fill the pot with water. Use the fill/flush valve or an external source.
  • Open the pot dump valve.
  • Add abrasive material (see Technical Specifications, in manual for capacity information).
  • Close the pot dump valve.
  • Open the fill/flush valve until water is above the pop-up seal, then pull up on the pop-up handle to pressurise the pot.
  • Close the fill/flush valve once the pot is pressurised.
    • NOTE: If using a non-pressurised water supply, fill the pot with water while in BLAST mode or use an external source.
  • Turn the selector valve to WASH until the pump stops cycling to remove air from the wash tubing.
  • Turn the selector valve to BLAST.
  • Open the abrasive metering valve 1/4 turn.
  • Check the pot pressure gauge to ensure the pot is pressurised.
  • If the pot is not pressurised, pull up on the pop-up handle while the pump is cycling.
  • Engage the blast control switch and set the blast air pressure to the desired pressure.
  • Open the abrasive ball valve.
  • While blasting, set the abrasive metering valve until the desired production is achieved.
    • NOTE: You may have to wait 1-2 minutes for the abrasive material to reach the nozzle.
  • Close the fill/flush valve.
  • Remove wash down line and clear debris.
  • Perform Draining the Pot procedure (in manual) to remove as much media and water as possible.
  • Perform Pressure Relief Procedure, in manual.
  • Disconnect the abrasive hose at the control box, and disconnect the blast hose. Shine a torch through the blast outlet connection. Inspect the interior of the pinch hose and blast circuit outlet for debris. If debris or packed-out media is found, remove then reinstall the blast hose and abrasive hose and resume blasting.
  • Remove the pot funnel assembly to gain access to the inside of the pot.
  • If visible, remove large debris and proceed to Step 11. If water and media still remain in the pot and no debris is visible, proceed to Step 6.
  • Remove the abrasive hose from the control box and pot at the cam-lock fittings. If media flows freely from the pot, debris is stuck in the abrasive hose. Clear the hose and reinstall.
  • If media is still stuck in the pot, loosen the clamp to remove the outlet manifold.
  • Probe inside the pot from the outlet until the debris is found.
  • Remove debris, inspect the gasket and replace if damaged. Reinstall the outlet manifold and torque the clamp to 19.5 N•m (15 ft-lb).
    • NOTE: When debris is cleared, media should freely flow from the pot outlet. The pot will need to be completely flushed before the outlet manifold can be reinstalled. All disposals must comply with national and local regulations.
  • Connect the abrasive hose at the cam-lock connections.
  • Inspect the post funnel assembly gaskets and replace if necessary. Reinstall the pot funnel assembly.

Related Links:
    1. Contractor
    2. Owner Support
    3. Education Centre
    4. EcoQuip 2 EQp Troubleshooting Advice
    Graco