SECTION 7 –
PLUMBING
7-20
line.
Replace city fill inlet filter. Recap the city
water inlet to avoid contamination by dirt or
insects.
32.
Winterize the Waste Pump and Shower
Drain Pump (Model 70BL only)
If your motorhome is not equipped with a
waste pump or shower drain pump, resume to
the next numbered step.
• Slowly pour 2 gallons of RV antifreeze into
the shower drain. Turn on the Shower drain
pump switch. Turn off pump switch when
done.
• Drain the gray holding tanks.
• Open Black Waste Tank Drain valve.
• Open Gray Waste Tank Drain valve.
• Press and Hold the Waste Pump switch for
approximately 5-10 seconds to get
antifreeze into the pump.
• Close Black and Gray Waste Tank Drain
valves.
When Done Adding RV Antifreeze
33. Turn Water Pump switch OFF.
34. Turn Winterization Valve 2 to the “Normal”
position.
This will stop the flow from the Antifreeze
Siphon Tube and revert the tank line flow to
the water pump.
35. Replace the protective cap onto the end of the
Antifreeze Siphon Tube to keep out insects
and debris when not in use.
Fill Drainage System P-Traps
36. Pour about one cup of RV antifreeze down
each drain for the galley sink and lavatory
sink. This fills the drain trap pipes to prevent
holding tank odors from entering the
motorhome during storage.
37. Remove the Cold Water Filter Canister under
the galley sink. Reinstall after emptying the
canister.
Your drainage and fresh water systems are
now winterized.
See instructions for removal from storage in
Section 10 - Maintenance and Storage.
