SeaLand J-series Vacuum Generator Duckbill Valve - Manual

INLET DUCKBILL VALVE REPLACEMENT:
1. If possible, flush plenty of fresh water through vacuum generator.
2. Disconnect power to vacuum generator by unplugging wires between
vacuum switch and pump motor.
3. Remove four 1/4-20x1 inch long hex head screws that secure
the pump to tank.
4. Lift pump body away from tank to expose two inlet duckbill valves.
5. Remove the upper duckbill valve from the bottom of the pump
body.
6. Remove the collar and lower duckbill from the vacuum tank.
7. Place new duckbill valve in collar and place assembly into
center of vacuum tank with duckbill pointing up (as shown).
The collar/duckbill valve assembly must be in center of hole.
8. Place new duckbill valve on top of collar in tank opening.
9. Making sure sealing ring is positioned properly in top groove
of tank, carefully replace the pump assembly into the top of
the tank, and secure with the four hex head screws.
OUTLET DUCKBILL VALVE REPLACEMENT:
1. Disconnect power to vacuum generator by unplugging wires between
switch and pump motor.
2. Unscrew swivel nut where hose is attached to pump outlet. Remove
swivel nut/hose from transition adapter.
3. Unscrew transition adapter and valve adapter to expose two duckbill
valves.
4. Replace both duckbill valves.
5. Reassemble pump outlet components, making sure all
connections are tight.
6. Reconnect power to vacuum generator. Test system for
vacuum leaks before using.
J SERIES VACUUM GENERATOR
Upper inlet
duckbill
Pump body
Pump motor
Swivel nut
Transition adapter
Valve adapter
Outlet duckbills
Lower inlet
duckbill
Vacuum
tank
Vacuum
switch Sealing
ring
Collar
SeaLand ® J-series Vacuum Generator
Duckbill Valve Installation Instructions
600345327
Dometic Corporation
13128 State Rt 226
PO Box 38
Big Prairie, OH 44611
1-800-321-9886
© Dometic Corporation
Caution
Pump starts automatically.
Turn off power to pump
before servicing.
Caution