SECTION 10
– Plumbing Systems
10-10
Class A
WINTERIZING PROCEDURE
1. Clean and dump holding tanks by following
steps:
•
Add water to the sewage holding tank by
holding the toilet flush lever open with the
water pump running. Add water to the
waste water holding tanks by opening the
kitchen, shower and lavatory faucets.
Tanks should be about 1/4 to 1/3 full to
rinse properly. Driving to a disposal site
will normally loosen and rinse any waste
material from the sides of the tank.
•
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.
•
Close dump valves and refit the dust cap
onto the drain outlet.
2. Level the motor home and drain the entire
plumbing system as described in the
following steps.
3. Open all drain valves. (See the water system
drain valve chart for locations on your model.)
NOTE:If your coach is equipped with a water
purifier system, you will need to remove
the filter cartridge and install the diverter
plug supplied. The cartridge is located
beneath the galley sink counter. The
diverter plug must be removed and a
filter cartridge installed before resuming
normal use of the water system. The plug
is intended for winterization only.
4. Operate the toilet flush lever and hold until
water stops flowing in the toilet. Then turn
water pump switch OFF.
5. Turn off the water heater power switch before
draining the water heater tank to avoid
damage to the heating element.
Drain the water heater by removing the plug
from the base of the water heater tank,
accessible from the outside of the coach.
(Requires socket and ratchet.)
Models 29RR/35NR shown
Siphon
Tube
Winterizing
Tube
Winterization Valve
beneath rear bed
Models 27CR/30BR/33LR shown
D R A I N
D R A I N
C L O S E
C L O S E
I N - L I N E
V A L V E
L I N E - E N D
V A L V E
