7-13
SECTION 7 –
PLUMBING
8.
Drain Toilet.
Operate and hold toilet flush
lever until water is completely drained from
toilet.
9.
Turn air pressure off
. Disconnect water
purge adapters. Recap the city water inlet to
avoid contamination by dirt or insects.
After Disconnecting Air Pressure
10. Close all waterline drains, tank drain valves,
and all faucets to avoid contamination by dirt,
insects, or rodents.
11. Reinstall the Water Heater drain plug and
close the P-T Relief Valve.
12. Pour about one cup of non-toxic RV antifreeze
down the galley sink drain(s), bathroom
lavatory sink drain, and shower drain. This
fills the drain traps to prevent holding tank
odors from entering the coach during storage.
NOTE: It is not necessary to add antifreeze to
the toilet since the flush valve will be
closed.
Do not add automotive antifreeze or
caustic chemicals such as bleach or
laundry detergents into the toilet bowl or
holding tanks. Although these products
may have a deodorizing effect, they may
damage plastic and rubber parts in the
system.
13. Empty the water pump strainer filter bowl to
avoid water freezing and cracking the filter
bowl. See “Water Pump” previously in this
section.
Dump and Clean Holding Tanks
14. Completely drain the sewage and waste water
holding tanks at an approved waste disposal
site. Drain the sewage tank first so the
following waste water can rinse any waste
solids from the sewage drain outlet and sewer
hose.
15. Close dump valves and refit the dust cap onto
the sewage drain outlet.
This will inhibit rust formation on valve shafts
and prevent entry and contamination by
airborne debris, insects, and rodents.
Your drainage and fresh water systems are
now winterized.
See instructions for removal from storage in
Section 11 - Maintenance and Storage.
WINTERIZING OPTIONAL
APPLIANCES
–If Equipped
Winterizing Ice Maker
1. Drain coach waterlines.
2. Unscrew the water supply line from the
bottom of the water inlet valve and drain any
water left in the line. This connection is
located in the refrigerator service
compartment on the outside of the coach. See
“Refrigerator Service Access Compartment”
in
Section 4 - Appliances and Systems
.
3. Let the ice maker run through a cycle, then
raise the shut-off arm.
4. Be sure water has drained from ice maker
supply line, then reconnect to inlet valve.
5. Ice maker is now winterized.
To use Ice Maker again:
Flush antifreeze from the waterlines, then
1. Close all drain valves.
2. Turn the water supply on.
3. Be sure the ice bin is in place and the
automatic shut-off arm is down.
Ice Maker Water Supply Connection
-Typical View