How often shall foam concentrate strainers be inspected?

• A. Monthly
• B. Annually
• C. Quarterly
• D. Semi-annually

Answer: (C)

Quarterly inspection is the typical practice for foam concentrate strainers. These strainers trap debris that can enter the foam system, and if they become clogged, foam flow can be restricted and the proportioning system may not perform correctly when it’s needed. Checking them every three months strikes a balance: it catches buildup before it affects performance without requiring the more frequent effort of monthly checks. If you wait longer, debris can accumulate and reduce foam quality or flow. During the inspection, isolate and depressurize the line, remove the strainer, inspect the screen for damage, clean or replace it as needed, reseal the housing, and document the maintenance.