Winnebago Impulse User Manual page 70

SECTION 7 –
PLUMBING
NOTE: DO NOT OPEN BOTH VALVES AT
ONCE. Do not open the Gray Waste Tank
Drain valve until the black tank is
drained and dump valve closed to avoid
sewage back-up into gray tank. Gray
water also rinses any black water solids
from the sewage drain hose.
5. Open the Gray Waste Tank Drain valve
(located beneath driver side of coach ahead of
rear wheel) and press and hold the Waste
Pump switch (located near the exterior
shower.) Release the Waste Pump switch and
close the Gray Waste Tank Drain valve as
soon as the gray tank is empty.
NOTE: Sound of Waste Pump will change
significantly when tank is empty.
Gray Waste Tank Drain Valve
(Located beneath driver side of
coach ahead of rear wheel)
-Typical View
7-8
Waste Pump Switch
(Located near exterior shower)
-Typical View
6. Add an odor control chemical to the sewage
holding tank through the toilet. These
chemicals are available at most RV stores.
7. Rinse sewage drain hose thoroughly with
water and stow.
NOTE: We recommend that you dump all
holding tanks before traveling to avoid
carrying unnecessary weight.
Using On-Site Sewer Hook-Ups
The sewage drain hose may remain attached to
the sewage drain outlet while the motor home is
parked and connected to an on-site sewage hook-
up.
When using a sewer hook-up, keep the dump
valves closed until a tank becomes full or when
preparing to leave the site. This keeps the solids
in suspension, allowing them to be carried out
with the liquids when the dump valve is opened.
If the valve is left open, the liquids will drain off,
leaving solids in the tank. Should this
accidentally happen, disconnect the hose, fill the
tank about half full with water, and drive a few
miles to dislodge the solids. A few starts and
stops will aid in the process. Then reconnect the
sewage drain hose and drain in the normal
manner.
NOTE: Always keep sewage drain outlet
capped while sewage connection is not in use.