Webasto Dual Top Evo 6 Operating Instructions Manual - page 17
Dual Top Evo 6
Maintenance
17
7
Maintenance
Correct maintenance of a Webasto Dual Top Evo 6 integrated heater is important to
ensure years of trouble free safe use and enjoyment.
We recommend taking the vehicle to your authorised Webasto dealer for periodic
service and inspection.
It is very important that your dealer carries out any repair or maintenance, which is not
described in this manual. Consult your dealer for help in determining your maintenance
needs.
How much of your vehicle's service and maintenance you can do depends on your skill
and experience, and whether you have the special tools required. If you want to learn
how to work on your heater ask your dealer for advice.
WARNING
Many heater service and repair tasks require special knowledge and tools.
Improper adjustment or service may result in damage to the heater or in an
accident, which can cause serious injury.
• For best performance, your authorised Webasto dealer must inspect and service your
heating system at least every 2 years, independent of the usage.
• DO NOT use high-pressure washer or compressed air to clean the heater. This can
force dirt into areas that may cause damage.
• The heater must be switched "OFF" before cleaning.
• Drain the water system when there is risk of frost or when the vehicle is stored for a
longer period.
• Use wine vinegar for descaling the boiler, this being introduced into the appliance via
the water supply.
See paragraph 7.2: "Descaling".
• Regularly check all components of the water supply system.
7.1
Disinfection
• In case no water has been taken from the water supply system for a period of a week
or more, drain the whole water system and rinse it thoroughly before refilling it.
• To avoid micro-organisms, water should not stay longer than a fortnight in the boiler.
Disinfect the water supply system if water was more than a fortnight in the boiler.
• To prevent any harm, operate the heater full power every four weeks:
– for at least 20 minutes continuously, winter mode, heating cabin without
hot water production.
This prevents mechanical parts from seizing.
– followed by operation for at least 30 minutes continuously, “Summer mode
70°C”, hot water production only.
Water supply systems below 60 °C may breed micro-organisms.
• Clean and disinfect the water supply system immediately before rental or lending of
the vehicle.
• Clean and disinfect the water supply system at least one time per year.
NOTE
Before winter storage, it is advisable to completely drain the water supply system with
compressed air of 2 bar. To do this, open all taps, connect the compressed air to the hot
water line and wait until the water has completely drained off.
• With suspicion on contamination with pathogens the water supply system has to be
disinfected.
• Clean and disinfect the water supply system according to all local regulations (e.g.
DVGW W 291).