Inspect Sump Pump Assembly
Operate the pump manually using the sump pump override (1).
Do not allow the sump pump to operate on an empty tank.
1. Listen for unusual noises, such as whining or scraping. (A sucking sound indicates that the
pump is operating on an empty tank).
2. Note whether pump is discharging by having an assistant monitor the discharge hose (2). A
hose that bucks as the pump is turned ON and OFF indicates a correctly operating pump.