Troubleshooting Examples - Graco EcoQuip EQ200T Operation, Repair, And Parts

Troubleshooting

Troubleshooting Examples

Troubleshooting Troubleshooting
Checking Checking for Checking for Leaks for Leaks Leaks
1. Open the dump valve. Check pot pressure
gauge, then close the dump valve.
Look at the pressure gauge to confirm that all
pressure has been relieved from the pot.
2. Disconnect the tubing at the blast check valve (L)
and at the fill port check valve (ZG).
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Examples
Examples
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3. Make sure the bung is engaged with its seal.
Turn the selector valve to WASH, then open the
abrasive ball valve to pressurize the pot. Set the
pot pressure to 145 psi (9.9 Bar, 0.99 MPa).
4. Check the water pump to confirm that no water
is leaking from the TSL fill port.
NOTE: The pump should stall after the pot
NOTE: NOTE:
pressurizes. If the pump does not stall, replace
the seals. Refer to the pump manual for repair
information.
5. Check for any water leaking from either check
valve. If a check valve is leaking, it must be
repaired or replaced. If the valves are damaged,
the pot will not be able to maintain pressure.
Also, check the pot pressure relief valve. If the
valve is weeping at pot pressures of 145 psi or
less, it needs to be replaced.
6. Close the abrasive ball valve , then disconnect
the quick coupler and confirm that the ball valve
is not leaking. Replace the abrasive ball valve
if it is leaking.
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