Operation Manual

2
16 Motorcaravan - 09-08 - DET-0033-07E
N
Maintenance
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3
13.3.1 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. 243,3) and "MAX"
(Fig. 243,2) on the compensator reservoir (Fig. 243).
13.3.2 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.
Unscrew or pull off the panel.
Open the rotary lid (Fig. 243,1) on the compensator reservoir.
Slowly remove cover with circulating pump upwards.
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.
Have heating fluid changed by an authorised dealer or a service centre at
intervals of approximately two years as corrosion-protection wears off after
some time.
Top up heating system with a water-glycol mixture (60 : 40) only. This mix-
ture offers frost protection up to approx. -25 °C. When topping up hot-water
heaters that are connected to the engine's cooling circuit, please observe
the instructions in the instruction manuals of the manufacturers.
Further information can be obtained from the separate instruction manual
"Alde Compact" heater.
Fig. 243 Compensator reservoir hot-
water heater
The optimum fluid level is reached when the fluid in the compensator res-
ervoir is 1 cm above the "MIN" mark.