Operating instructions

5. Maintenance of the Heater
5.1 Annual Maintenance
The Webasto heater requires a minimum of maintenance to operate.
To keep your heater in service the following maintenance procedures
should be performed annually before each heating season:
Enclosure Area
- clean the heater and enclosure area from any accumulated
debris or dust with compressed air
- inspect all components for wear and damage
Electrical System
- check wiring harnesses for damage, fix or replace if required
- check condition of the batteries and connections.
- load test batteries and replace if necessary.
Exhaust System
- check the exhaust system carefully for restrictions or corroded
areas. Replace exhaust pipe if necessary.
Fuel System
- change fuel filter and inspect fuel lines for wear and damage.
Repair or replace if necessary.
Burner System
- swing open burner head, clean flame detector (photo eye),
pull out combustion chamber and inspect and clean heat
exchanger. Replace nozzle if necessary (annually).
Re-install combustion chamber and close up burner head.
Operation Test
- Run your heating system for at least 15 minutes.
- Check water and fuel connections for leakage. Re-tighten
clamps and fittings if necessary.
NOTE
Operate your Webasto at
least once a month for 20
minutes.
NOTE
The heater will not function
properly with weak
batteries.
NOTE
For major repairs and
spare parts, return to your
authorized
Webasto Thermosystems
servicing Specialist.
Thermo 230/300 5 Maintenance of the Heater
501