Sump; Sump Base Plate/Non-Return Flap Valve - GE ZBD5900 Technical Service Manual

5.2.36 Sump

5.2.36.1 Refer to section 5.1 to gain access to sump.
5.2.36.2 To remove the sump, disconnect hoses attached to
the sump nozzles (4 Hoses).
5.2.36.3 Remove the overfill collector.
5.2.36.4 Remove the Phillips head screw which holds the
drain pump to the sump socket.
5.2.36.5 Remove the four mounting screws and lift the sump
retainer clear as shown below.
5.2.36.6 Remove sump from beneath the tub.
5.2.36.7 Remove the sump gasket from the flange of the tub
as shown below.
5.2.36.8 Reassemble the dishwasher in reverse order.
5.2.36.9 Operate and test the dishwasher before leaving.

5.2.37 Sump Base Plate/Non-return Flap Valve

The sump base plate incorporates the non-return flap valve
which can be removed and replaced as follows:
NOTE: This procedure can also be performed while the
sump is still fitted to the tub.
5.2.37.1 Remove the lower spray arm and venturi, drain cup
filter, the perforated stainless steel wash filters, the super
fine by- pass filter and the lower spray arm support.
5.2.37.2 Remove the three screws (two start thread) which
hold the sump base plate and lift clear.
Remove 3 screws to access non-return flap valve.
5.2.37.3 Remove the non-return flap valve which is held by a
hinged shank and barb clip by grasping the non-return flap
valve, pressing the tip of the hinged shank into the rectangu-
lar recess and drawing the non-return flap valve from the
sump base plate as shown below.
NOTE: The square, flat face of the non-return flap valve must
seat upon the annular valve face of the sump base plate.
The non-return flap valve.
5.2.37.4 Reassemble the dishwasher in reverse order.
5.2.37.5 Operate and test the dishwasher before leaving.
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Sump base plate