SECTION 7 –
PLUMBING
7-12
Drain Appliances
16. At this time, if your coach is equipped with an
optional refrigerator ice maker, dishwasher, or
washer/dryer, the waterlines for these
appliances must also be drained. (See
“Winterizing Optional Appliances”
instructions at the end of this section.)
If not equipped with optional appliances,
proceed to the next step.
Close All Drain Valves
17. Close all waterline drains and tank drain
valves to avoid contamination by dirt, insects,
or rodents.
18. Pour about one cup of RV antifreeze down
each drain for the galley sink, lavatory sink,
and shower/tub. This fills the drain trap pipes
to prevent holding tank odors from entering
the coach during storage.
Dump and Clean Holding Tanks
19. 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 dump outlet and sewer hose.
20. Flush the sewage tank using the Black Waste
Tank Flush Inlet (if equipped).
21. Close dump valves and refit the dust cap onto
the 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
totally winterized.
See instructions for removal from storage in
Maintenance Section.
WINTERIZING OPTIONAL
APPLIANCES
–If Equipped
Winterizing Ice Maker
When winterizing, make sure the waterline is
completely drained by following this procedure.
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
Appliances & Systems section.)
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.
6. Go back to Blow-Out Procedure Step 9.
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 shutoff arm is down.
4. Let the refrigerator cool down to ice making
temperature. Remember, this can take up to 24
hours.
5. Let the ice maker cycle and dump the first
batch of ice.
Winterizing Washer/Dryer
Method 1 - Draining Water
Follow these steps to winterize (drain) your
washer/dryer for freezing temperatures.
1. With the machine power OFF, pour 1/2 quart
of RV-type antifreeze into the washer drum.
Ice Maker Water Supply Connection
-Typical View
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