andrews R18 Series, Technical Documentation Manual

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18IP22B
47
Fig. 30 Inspection and cleaning of the draught diverter and heat exchanger
8 MAINTENANCE
8.1 Safety Always wear the proper protective clothing and shoes when
8.2 General information In order to keep the R18 in a safe working condition, the water
8.3 Inspection Inspecting the draught diverter
servicing the water heater. Wearing jewelry and loose clothing
can contribute to unsafe situations.
heater should be inspected and serviced at least once every
year and cleaned if necessary.
Frost protection
When water heater is not in operation for a long period of time,
the heat exchanger should be protected against frost. This can
be achieved by draining water from the heat exchanger.
The draught diverter and heat exchanger can be inspected and
cleaned with the minimum on tools and time. Place yourself in
the draught diverter and execute the following:
Heat exchanger (external inspection)
As you inspect the inside of the draught diverter, the top of the
heat exchanger can also be inspected. Check for dirt and
sooting. For cleaning the heat exchanger, refer to chapter 8.4
‘Cleaning’.