Water leaking between the motor and the pump housing under the Espa pump

Safety first: Disconnect power and close valves. Drain the pump before disassembly.

• 1. Confirm leak location: Dry the area and observe. If water appears at the joint between the motor flange and pump housing, the mechanical seal is likely leaking.
• 2. Remove pump from motor: Disconnect unions, remove mounting bolts, and separate the wet end from the motor to access the seal.
• 3. Replace mechanical seal: Remove the rotating seal half from the impeller and the stationary seat from the housing. Clean the seal cavity and install a new Espa mechanical seal kit, taking care not to touch the seal faces with bare fingers.
• 4. Reassemble and test: Refit the impeller and housing, reconnect plumbing, prime the pump, and check for leaks during operation.