THOR Jayco Precept 2021, Owner'S Manual

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Section 8: Plumbing System
Using the macerator system
1. Attach the dump connector to the 3-inch sewer outlet at
the dump station, or to a 3/4-inch garden hose and run the
hose to a dumping location.
2. Empty the tanks one at a time. Black tank should be
emptied first followed by the gray tank so waste water
from the gray tank will help rinse solids or debris from the
dump connector and flex hose.
3. Pull the black tank T-handle to open the drain. (To close
the tank drain, push the T-handle in). Typically, the
handle is located in the utility center or in a separate com-
partment next to the hose storage box.
4. Turn the Macerator power switch ON at the utility center
panel and the macerator pump will begin sending waste
through the dump hose. Make sure the sewer hose is
connected before turning the macerator on.
5. When the tank is empty, turn the macerator power switch
OFF. Close the black tank drain T-handle.
6. Open the gray drain valve T-handle.
7. Turn the Macerator Power Switch ON.
8. When tank is empty, turn the macerator power switch OFF. Close the gray tank drain
valve T-handle.
9. Unhook the dump connector, rinse it out and replace the hose and connector back into
the storage compartment or under the utility center.
The black tank flush inlet can be used with this system also (refer to the Black Tank Flush
section).
Macerator Bypass Valve
In the event of a malfunction with the macerator pump, a
macerator bypass valve is located beneath the utility cen-
ter or in the compartment with the black/gray tank valves.
Some models will have the bypass valve located under the
motorhome, and it is accessed through the generator com-
partment. This bypass will dump the waste (using gravity
flow) from the black/gray tanks to a 3-inch dump connector
attached to the bypass valve.
To dump black/gray tanks through the bypass:
1. Remove the dust cap on the macerator bypass con-
nector.
2. Attach a 3-inch sewer hose to this bypass connection
under the motorhome or in the utility center, and to a
sewer outlet at a dump station.
3. Empty the tanks one at a time. Black tank should be
emptied first followed by the gray tank so waste water from the gray tank will help rinse
solids or debris from the dump outlet and hose.
4. Pull the black tank dump valve located at the utility center or in the separate exterior
compartment.
5. Pull the manual macerator bypass valve to open it and the black tank will empty by
gravity flow.
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