Regal LS4C Owner's Manual page 146

Holding Tank (Typical)
HOSE TO
DISCHARGE
PUMP
HOSE TO DECK
HOSE FROM
PUMP OUT
TOILET
If installed the holding tank features a polyurethane
construction. A center metal strap wrapped with a
space age rubber insulator encapsulates the tank.
90 degree elbows along with low permeability
hoses with smooth inside walls to help promote
material flow. Periodically check all hardware for
wear and tightness especially the hose clamps.
It is recommended that the holding tank be pumped
dry at the end of the boating season. Add non-toxic
antifreeze to the system. Do not use automotive
types as they tend to be corrosive.
Electric Toilet Vent Filter
The electric toilet system uses a vent line filter to
control waste system odors. The filter is connected
WASTE
to the holding tank vent line and is mounted on the
SENDER
starboard hull side for easier maintenance.
HOLDING
The filter uses union couplings which when
TANK
loosened will let the filter be removed and the
replacement filter tightened in place without having
to remove any hoses and clamps.
It is recommended to replace this cartridge filter
once per year as there is no other maintenance
required on this component.
UNION FITTINGS
146