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171

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Sanitary fittings

 Set all water taps to "Cold" and leave them open. This will fill the cold water

pipes with water.

 Keep the taps open until the water flowing out of the taps has no bubbles

in it.

 Close all water taps.

 Close drinking water filler neck.

 Check that the cap on the water tank is not leaking.

Position of the drain

cocks and safety/

drainage valve

See chapter 16.

10.5 Emptying the water system

To empty and ventilate the water system, proceed as follows. This will avoid

frost damage:

 Position the vehicle horizontally.

 Switch off water pump on panel.

 Switch off the 12 V power supply on the panel.

 Shut off the boiler (see section 9.4).

 Open all drain cocks. To do this, position the drain cock's rocking lever

(Fig. 187,1) vertically or turn the drain cock's cap (Fig. 188,1) in an anti-

clockwise direction.

Z If the vehicle is not used for several days or if it is not heated when there is

a risk of frost, empty the entire water system. Make certain that the water

pump is switched off on the panel. Otherwise, the water pump will overheat

and may get damaged. Leave the water taps on in central position. Leave

the safety/drainage valve (if there is one) and all drain cocks open. Frost

damage to appliances, frost damage to the vehicle and deposits in water-

carrying components can be avoided in this way.

Z If the water pump can be turned off from the panel, always turn off the water

pump from the panel before you empty the water system. Otherwise the

water pump runs until it overheats or the battery is empty.

Z The Truma system (heater/boiler) has a safety/drainage valve and,

depending on the model, one or two drain cocks for emptying.

Z Depending on the model, the Alde system (heater/boiler) has one or two

drain cocks for emptying.

Fig. 187 Drain cock (with rocking lever) Fig. 188 Drain cock (with twist cap)

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Argo AES Series Bedienerhandbuch Seite 171