Drainage System - Polar Electro 520 CTH DB 2020 Instruction Book

Most caravans are equipped with a 40-litre internal drai-
nage tank. This means that the system is frost-proof in the
winter, and there are no problems with frozen, overfilled
buckets. During short stops, you can also take care of your
dishwashing etc. without difficulty. Of course, the system
can be used as normal by means of the waste water being
allowed to run directly down into a closed tank.
Drainage tank
In caravans without drainage tanks, the closed tank is
connected to the external cone and the valve is set in the
open position before starting to use the drainage system.
The hoses in the system have a preventive coating, who
can be damaged if water warmer than 65º C pours in the
hoses. If this coating being damaged, a bad smell in the
system can arise.
The drainage system is equipped with an external drai-
nage valve. The valve is located under the floor on the
left side of the caravan at the rear or on the left side at
the front adjacent to the drainage tank.
The drain is electrically heated to prevent it from freezing
in the valve. The electric heater is started by plugging the
plug into the wall outlet located near the drain.
Under the floor by the valve there is a cone for connec-
ting a closed tank and a hose for bleeding. Read more
about emptying in the section "Emptying the drainage
system", page 55.
Cone
Tap: Open = handle parallel with the caravan lengthways
Closed = handle at right angles to the caravan
54
Drainage system

Drainage system

Venting
Floor
At temperatures below -30°C there is a risk of the drain
valve under the floor freezing. In order to thaw out the
valve, undo the valve handle and cover the end of the
shaft with an insulating material. The valve will then
thaw out in a few hours.
∆
Pour never water warmer than 65º C in the
drainage. The hoses have a preventive coa-
ting, who can be damaged and a bad smell
in the drainage system can arise.