A floor sink receives discharge from equipment through an open gap. When it overflows during a discharge, the strainer may be clogged or the drain below it may be restricted. Record which equipment was emptying when the water rose.
Observe the timing and nearby fixtures
Note whether overflow happens with one appliance or only when several discharge together. If nearby floor drains also rise, report that immediately. Take the affected equipment out of use if discharge is causing overflow, and keep staff away from the wet area.
Give the plumber a view of the installation
Share a photo showing the strainer and the pipes that discharge above it. Mention when the strainer was last cleaned and whether the drain has been serviced before. A plumber can determine whether the issue is at the strainer, the trap, or a shared branch.
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