How to Repair the Raritan SeaEra Diaphragm Pump
Direct YouTube Link: https://youtu.be/KpBxfNlvtfY
00:48.64 Unmount the pump and remove any covers that may be relevant
00:54.00 Release. the locking clips and remove the fittings and hose.
01:01.25 01:01.96 Loosen before 5/16 bolts
01:14.00 Remove the set. Screw cover
01:17.00 Gently rotate the housing until the screw aligns
01:22.05 Gently loosen the set screw and gently remove the pump assembly from the motor.
01:38.01 Remove the screws and separate the pump assembly
01:47.99 Remove the screws from the bearing plate and install the new diaphragm assembly.
02:05.91 Use caution not to overtighten the screws
02:15.91 Remove and discard the middle housing.
02:25.01 Remove the four cone seals from the upper housing
02:35.01 Insert the housing screws
02:42.01 Partially install the cone seals tapered end down.
02:55.99 Align, the bolts with the new middle housing and install.
03:05.76 Install, the lower housing, assuring the bearing access port is aligned properly.
03:20.31 Reinstall the diaphragm pump carefully, aligning the flat on the motor shaft with the bushing set screw
03:34.01 Gently tighten the set screw for now and re-secure the bolts on the pump head.
03:42.01 Using a torque wrench, tighten the bolts to 50 inch pounds
03:49.01 Finish tightening the set screw and install the rubber plug.
03:56.01 Remove and replace the inlet and discharge fitting O-rings and reinstall.