Black & Grey Tank Drains; Black/Grey Water Holding Tanks - Highland Ridge RV 2015 Owner's Manual

HIGHLAND RIDGE TOWABLE
Drain pipes With P-Trap (If So Equipped)
The drain pipes may be equipped with a "P-trap" installed to help prevent odors
from escaping into the RV. During travel, water from the P-traps may spill and
permit odors into the RV. By adding water and using a RV approved deodorizing
agent you will dissolve the contents faster and will keep the drain lines and tanks
clean and free flowing.
These chemicals are available at an RV supply store or your dealer.
Drain pipes With Dry Sealing Valve (If So Equipped)
Your RV may be equipped with a dry sealing valve that prevents the escape of
odors from your waste system and eliminates the need for P-traps.
Should the RV drain piping system become clogged and a mechanical cleanout
tool is used to open the drain pipe, it is important that the dry valve be removed
before passing the cleanout tool through the piping.
Passing a mechanical cleanout tool through the waterless valve may cause
damage to the internal seal that may potentially allow sewer gases to escape to
the RV interior.
A label has been placed near the location of the waste valve that reads as follows:
USING MECHANICAL DRAIN-CLEANING DEVICES.
Vents
Another important part of this system is the vent pipes and vents that release air
from the grey and black water holding tanks. The exterior vent cap is attached to
the roof and must be kept clear of obstructions to perform as intended. On some
models, the vent pipe may be part of the drainage system referred to as a "wet
vent" (water flows downward as air flows upward in the same pipe).
B /G W
LACK REY ATER
When connected to the sewer drain line at a campground, keep the "black tank
drain" valve closed until the holding tank is at least ¾ full. This should provide
sufficient water to assist in complete draining of the black water holding tank.
Repeat as needed.
Never leave the black tank drain in the open position continuously when
connected to the campground sewer system.
B & G T
LACK REY
There are labels on the exterior of the RV indicating the location of the grey tank
drain and black tank drain (also called dump valves). Always drain the black water
holding tank first so the following grey tank waste water can help rinse any solids
or debris from the dump outlet and sewer hose.
1. To make drainage easier, level the RV.
2. Remove the sewer hose housing dust cap,
and attach
supplied).
3. Place the end of the sewer hose into the
approved dump station.
REMOVE WATERLESS TRAP BEFORE
H T
OLDING ANKS
D
ANK RAINS
the sewer hose
SECTION 8 - PLUMBING SYSTEMS
(customer
Fig 8.10 Black/Grey tank
dump valves
8-13