Instruction manual

220 T-Modell - 13/14 - Ausgabe 08/13 - 2354677 - BUE-0029-14EN
Maintenance
12
12.6.1 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. 263,3 or
Fig. 264,3) and "MAX" (Fig. 263,2 or Fig. 264,2) on the compensator res-
ervoir (Fig. 263 or Fig. 264).
12.6.2 Topping up heating fluid
 Position the vehicle horizontally. This prevents the formation of bubbles.
 Switch off the hot-water heater and allow it to cool down.
 If necessary, unscrew or remove the panel (depending on the model).
 Open the rotary lid (Fig. 263,1 or Fig. 264,1) on the compensator reservoir.
 Remove cover.
 Check anti-freeze with an anti-freeze hydrometer. The frost protection con-
tent must be 40 % or correspond to a frost protection of -25 °C.
 Fill water frost protection mixture slowly into the compensator reservoir.
12.6.3 Bleeding the heating system
The bleeding valves are built in nearby the radiators.
Fig. 263 Compensator reservoir with
panel
Fig. 264 Compensator reservoir without
panel
Z The optimum fluid level is reached when the fluid in the compensator res-
ervoir is 1 cm above the "MIN" mark when it is cooled down.
Fig. 265 Bleeding valve of hot-water
heater