Operation Manual

Maintenance
13
160 Caravan - 12-10 - EN
13.6 Alde hot-water heater
13.6.1 Checking the fluid level
 Switch off the hot-water heater and allow it to cool down.
 Check if the fluid level is between the marks "MIN" (Fig. 167,3) and "MAX"
(Fig. 167,2) on the compensator reservoir (Fig. 167).
13.6.2 Topping up the heating fluid
 Position the vehicle horizontally. This prevents formation of bubbles.
 Switch off the hot-water heater and allow it to cool down.
 Unscrew or remove the panel.
 Unscrew the screw cap (Fig. 167,1) at the compensator reservoir.
 Slowly remove the cover with circulating pump upwards.
 Check anti-freeze with an anti-freeze hydrometer. The frost protection content
must be 40% or provide frost protection of up to -25 °C.
 Fill the water frost protection mixture slowly into the compensator reservoir.
Z Check the level of the heating fluid regularly on the compensator reservoir.
Z During or after the first operating hours of the hot-water heater, the filling level
may fall below the minimum mark. If this is the case, top up the heating fluid.
Z We recommend bleeding the heating system after the initial heater operation
to checking the glycol content.
Z Have heating fluid changed by an authorised dealer or a service centre at inter-
vals of approximately two years as corrosion-protection wears off after some
time.
Z Top up heating system with a water-glycol mixture (60 : 40) only. This mixture
offers frost protection up to approx. -25 °C.
Z Further information can be obtained in the manufacturer's instruction manual.
Fig. 167 Compensator reservoir hot-
water heater
Z The optimum fluid level is reached when the fluid in the compensator reservoir
is 1 cm above the "MIN" mark.