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Instruction Manual
D104304X012
Troubleshooting
Table 3. ATI Actuator Troubleshooting
Problem
Ensure all parts are intact and assembled as specified.
Check for debris or damaged parts that may be jamming actuator.
Actuator Stroke is less
than full rated travel
Ensure stem connector is assembled as specified.
Inspect valve, see EWNS instruction manual (D103551X012) or HPNS instruction manual (D103466X012).
Check for tightness of fittings.
If leakage is from ATI seals, replace ATI assembly.
Ensure stem connector is assembled as specified.
Air leakage
Inspect valve, see EWNS instruction manual (D103551X012) or HPNS instruction manual (D103466X012).
Inspect all air connections for leakage
Other
Contact
Emerson sales office
if more assistance is needed.
Possible Solution
ATI Piston Actuator
June 2023
11
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