Alde Compact 3030 Gebrauchsanweisung Seite 45

8. Care and maintenance
LPG hoses should be replaced according to the date marking of the hose when they dry out and
crack, resulting in possible leakage. For extra safety, we recommend using Alde's Type 4071 leak
tester, installed as closely to the reduction valve as possible.
• Turn off the main power supply (12 V) to the heating system when not in use.
The main power supply shall always be switched off when the vehicle is not in use.
• Close the tap on the LPG bottle/tank.
8.1 Replacement of the air cushion
The heating system is designed to have air space, a so-called air cushion, at the top of the hot water
tank. The air cushion is absolutely necessary to enable the expansion of the water when heated,
but also to absorb any pressure shocks caused by the water pump in the heating system.
Always replace the air cushion in the heating system after 10 days of use. Do this by opening the
heating system safety / drain valve for a few seconds (Fig. 17 or fig. 18, depending on the valve fitted
to the vehicle).
1. Knob for
emptying
2. Button for
closing
Fig. 17. Safety valve / drain valve
8.2. Emptying of water heaters and water pipes
WARNING
Scalding hazard
Remember, the water in the water heater may be hot.
NOTICE
Check that the automatic non-return valve opens and lets air into
the boiler when draining, and check that the hose is not clogged.
1.Switch off the fresh water pump.
2.Open all water taps to the central position so that both hot and cold water run out.
3.Then open all safety/drain valves by turning the blue handle through 90° (fig. 17, item 1); alternative-
ly, move the yellow handle into a vertical position (fig 18).
4.Make sure all water runs out (approx 7-10 litres). Allow the valves to remain open until the heater is
used again.
5.Reset all safety/drain valves by closing the handle again and pressing in the blue button on the side.
(fig. 17, item 2)
When emptying other water systems in the vehicle, refer to the manufacturer's instructions for use.
Knob for
emptying
Fig. 18. Safety valve / drain valve
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