Armstrong International Steam Trap 881

Hold the lever assembly against the valve seat with the valve contacting its seat

Ensure the two fulcrum points are resting on the face of the seat

Are the guide pins central in the guide pin holes?

Is there equal side-to-side movement of the lever?

Bend the pins until they are centrally located

Ensure pins remain perpendicular to the guide pin plate

Verify the lever can drop until it rests on the guide pin hooks

Observe the discharge when the test valve is open

Refer to page 16 for continuous steam blow issues

Refer to page 17 for continuous condensate flow issues

Refer to page 15 for no flow issues (Cold Trap)

Refer to page 16 for no flow issues (Hot Trap)

Remove all sediment and dirt from the trap body

Immerse mechanism in approved cleaning fluid if required

Backflush stainless steel traps with compressed air or water under pressure

Strainer Installation and Maintenance

Is there an exceptional amount of dirt?

Install a strainer ahead of the trap if necessary

Determine strainer maintenance frequency

Ensure the by-pass valve is closed

Is the by-pass valve steam tight?

Can the trap operate without the by-pass valve?

Remove the by-pass valve if it is not necessary for operation

Confirm the by-pass valve remains closed after inspection

Describe any issues found during inspection

Ensure the steam trap is isolated from the system

Gather necessary tools and replacement parts

Remove the old lever and guide pin assembly

Inspect the old lever for wear and damage

Inspect the guide pins for wear and damage