Excess pressure in vessel after extraction is complete
Excess pressure in vessel after extraction is complete
Possible Causes:
A valve may be "stuck" closed. If the instrument hasn't been used in awhile, it is possible that the solution is simply to clean the valves and clean any debris or buildup that may have settled on the valve piston.
To test:
Turn the instrument on and press <STOP> to initiate a drain cycle. If the pressure does not drop to zero in 3 minutes, you will need to clean Valves Q5 and Q6. See XT Service Procedure #5.
To clean Valves Q5 and Q6:
Remove the back of the machine and clean Valve Q5 and Q6 located on top of the condenser. It might be a good idea to clean one valve at a time, so that the solenoid coils do not get reversed.
After the valves are cleaned and put back together, run a 10 minute extraction to see if this solved the problem. When the 10 minute extraction ends, the screen will say "Draining". Contact ANKOM if the pressure does not drop to zero over the next 3-5 minutes.
Fault Screen: "ETS Heater" "OverHeat" [ENTER] Refer to the following:
Fault Screen: "ETS Heater" "OverHeat" [ENTER] Refer to the following:
See XT10 Service Procedure #2.
Fault Screen: "Operating Temp" "Fault"
Fault Screen: "Operating Temp" "Fault"
This fault indicates that the Instrument did not reach operational temperature (90°C) in 8 minutes.
Possible Causes:
A valve is leaking- The most common cause is a leaky Q1 Valve, which would cause cooling water to flow into the vessel during the heating stage.
To Test:
- Turn the instrument completely off but keep the water supply on. Check to see if water is running out of the drain line. Water should not running out of the drain line if the instrument is off. If it is, then you need to inspect and clean valves Q1, Q2, And Q3. (Q1 is the most important). To inspect the valves, turn off the water supply and See XT Service Procedure #5.
- After inspecting the valves, turn your water supply back on and verify that no water is running through the drain line while the instrument is off. Run an extraction. If the vessel is not heating, contact ANKOM Technology.