TECHNICAL

Caravan & motorhome technical questions

Question

How do I drain the water system on a touring caravan?

Answer

1. Turn the water pump off at the control panel. If you have an exterior submersible pump ensure that this is un-plugged..

2. Open the drain valve at the water heater

a. On the Carver Cascade heater this is on the outside of the caravan at the bottom left hand corner of the flue cover.
b. For the Truma Ultrastore this is inside on the floor beside the heater. The yellow or red lever needs to be in the vertical position.
c. For any other water heater please refer to your owners manual.

3. If you have an internal cold water tank then there may also be a drain valve attached to this. If not you will need to start you water pump until the internal tank is empty

4. Open all taps. If you have a single lever mixer tap then open this midway between hot and cold.

5. Pull out the shower hose and disconnect the shower head. Leave the end of the shower hose in the shower tray. Blow air through the shower head and store in a safe place.

6. If you have Whale Elegance taps then we advise that you unscrew the faucet, blow air through it and store in a safe place. Water is reluctant to drain from these if left in situ and frost damage may result.

7. If you are leaving your submersible pump in the caravan over the winter then we recommend that you wrap it in a towel or similar material to prevent frost damage.

8. If you have an internal water pump then start this for a few seconds, by turning it on at the control panel, to remove water from the pump.

9 Leave the drain taps open. Store the drain plug from the Carver water heater in a safe place.

10 The Toilet -
Completely drain the water holding tank into the cassette and remove the cassette to empty and clean. Clean the cassette with Thetford Tank Cleaner and rinse out. Use Thetford Maintenance Spray to coat the cassette seal and blade. Replace the cassette in the caravan and leave the blade i