Why is my Graco PR70 Dispenser display module completely dark?
If the display module on your Graco Dispenser is completely dark, it could be due to: * No power: Verify that the rear AC power switch is ON. * A blown fuse: Replace the machine fuses. * A loose connection: Tighten the 5-pin cable on the Display Module. * A bad display module: Replace the Display Module.
What to do if Graco PR70 Dispenser is not dispensing material?
If your Graco Dispenser is not dispensing material or dispensing an incorrect amount, check the following: * Ensure the tank ball valve is open (if installed). * Verify that the tank is not empty and fill it with material if needed. * Check the tank for any obstructions. * Prime the machine to remove any air in the material. * Inspect the check valve for malfunction; remove, clean, or replace it. * Check the piston for wear or breakage; remove and replace it if necessary.
How to fix a stalled piston in Graco PR70?
If the piston in your Graco Dispenser is stalled: * Check if the input air is reduced or removed. Reconnect the input air line to the machine and increase the air pressure regulator adjustment. * The mixer could be blocked. Replace the static mixer, and incorporate a purge timer or decrease the purge timer delay to prevent future blockages. * The Open Dispense Valve (ODV) adjustment might be too late. Readjust the ODV setting to occur sooner. * A check valve might be blocked. Remove, clean, and replace the check valve. * There might be an air cylinder failure. Remove the air cylinder and reinstall the air cylinder parts as necessary.
What to do if the Graco PR70 Dispenser is dispensing the wrong weight?
If the material dispensed by your Graco Dispenser is not the correct weight, there might be several reasons: * The specific gravity of the materials may have changed since the last calibration, in which case you should recalibrate the machine. * The machine's air pressure may have changed; readjust the air pressure regulator to the calibrated value or recalibrate the machine. * The tanks may not have enough material; check the tank levels and fill and prime as needed. * There might be a slight obstruction in the mixer; replace the static mixer and prime the machine. * A check valve may be malfunctioning; remove, clean, or replace it. * The piston may be worn or broken; replace the piston.
Why are the pumps drawing material back from valve hose in my Graco PR70?
If the pumps are drawing material back from the valve hose on your Graco Dispenser, it's likely that the check valve is stuck open. Remove the check valve and clean or replace it as necessary.
What does Error Code E21 mean on a Graco PR70?
If you're getting an E21 Piston Stroke Time-out Error on your Graco Dispenser, it means a piston stroke action has taken longer than 55 seconds. To resolve this, check the machine input line pressure.
What to do if there is a material leaking from the pump rear seal on my Graco PR70?
If there's significant material leaking from the pump rear seal of your Graco Dispenser, it's likely due to a worn pump shaft. To fix this, remove the pump shaft assembly and reinstall a rear pump rebuilt kit.
How to fix a completely dark display module on a Graco Dispenser?
If the display module on your Graco Dispenser is completely dark, start by verifying that the rear AC power switch is turned ON. If it is on, check the fuse and replace it if it's blown. A loose connection could also be the cause, so tighten the 5-pin cable on the display module. If none of these steps work, the display module may be faulty and need replacement.
What causes a piston to stall in a Graco PR70 and how to fix it?
If the piston on your Graco Dispenser is stalled, it could be due to several reasons. First, check if the input air is reduced or removed; reconnect the air line and increase the air pressure regulator adjustment. A blocked mixer can also cause this, so replace the static mixer and consider using a purge timer to prevent future blockages. An improperly adjusted Open Dispense Valve (ODV) might be the issue, so readjust the ODV setting. Additionally, a blocked check valve can cause the piston to stall, so remove, clean, and replace it. Finally, an air cylinder failure could be the cause, so remove and reinstall the air cylinder parts as needed.
Why is my Graco PR70 dispensing off ratio?
If your Graco Dispenser is dispensing off-ratio, start by checking the tank levels and add material if necessary. Ensure the tank ball valve is open and prime the machine. If the machine is out of phase, rephase it. A malfunctioning check valve can also cause this, so remove, clean, or replace it. Lastly, a worn or broken piston could be the culprit; replace it if needed.
Hazards related to electrical shock during operation.
Risks of high-pressure fluid injection and necessary precautions.
Dangers from toxic fluids and fumes, requiring safety measures.
Essential protective gear for safe operation and maintenance.
Risks of flammable fumes igniting or exploding in the work area.
Dangers and injuries resulting from improper equipment operation.
Risks of injury from moving mechanical components during operation.
Danger of severe burns from hot equipment surfaces or fluids.
Steps for physically mounting the machine and connecting utilities.
Necessary electrical power and wiring considerations for installation.
Importance and procedure for grounding the equipment for safety.
Overview of the different setup screen categories.
Screen for performing various calibration procedures.
Screens for configuring fluid and system options.
Settings for tank and hose heater temperature control.
Configuring general system behavior and run screen options.
Settings for monitoring dispense accuracy.
Calibrating the piston's extended and retracted positions.
Procedure to set the extended position of the piston.
Procedure to set the retracted position of the piston.
Procedure to set the piston position when engaging the cylinder.
Procedure to fill the dispense head with material and remove air.
Adjusting the timing of material delivery for correct ratio.
Fine-tuning the dispense amount for accurate phasing.
Detailed steps for adjusting material phasing.
Adjusting the valve to prevent material drip or air intake.
Setting the timing for the dispense valve opening.
Calibrating the machine for accurate dispensing ratios.
Performing shots to verify and adjust the dispensing ratio.
Performing small and large shots to calibrate dispensing quantities.
Executing and recording small calibration shots.
Executing and recording large calibration shots.
Calibrating flow meters for accurate ratio.
Executing shots to measure and record flow meter data.
Connecting and configuring external machine controls.
Overview of the main operational screens.
Viewing a log of system errors.
Configuring and initiating automatic tank refilling.
Managing tank and hose heater temperatures.
Recommended maintenance tasks and their frequencies.
General| Hose Length | Customizable |
|---|---|
| Power Source | Electric |
| Ratio Range | 1:1 to 12:1 |
| Viscosity Range | Up to 1, 000, 000 cps |
| Materials | Epoxies, polyurethanes, silicones, and other two-component materials |
| Applications | Potting, encapsulation, gasketing, sealing, bonding |
| Dispensing Capacity | Variable, based on configuration |
| Weight | Approximately 150 lbs |
| Dimensions | Varies based on configuration |
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