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De Dietrich Gas 310/610 ECO
15.4 Maintenance
If during the annual inspection combustion results indicate that the boiler is no longer operating at the optimum
level additional maintenance should be carried out as follows:
The Gas310/610 ECO boiler or any of its components does not contain any crystalline silica.
Warning Electrical Shock Hazard:
Please label all wires prior to disconnecting when servicing this boiler. Wiring errors can cause improper operation
and dangerous operation. Verify boiler operation after service!!
Note:
Please ensure that the gas supply and main power supply is isolated before any maintenance work is carried out
on the boiler. Care should be taken when stripping the boiler for maintenance making sure that all parts, nuts,
washers and gaskets, etc. are kept safe, clean and dry for re-assembly. Following maintenance/cleaning, the
boiler should be re-assembled in the reverse order re-placing gaskets and joints where found necessary.
All general cleaning should be carried out with compressed air, a soft brush or damp cloth to avoid
damaging components. (Solvents must not be used).
Remove front and end casing panels lift casing panel slightly upwards and tilt toward you lift again clear of the
bottom rail.
15.4.1 Inspection of air box and dirt trap
The air box has a dirt trap on the inlet side. Check this for dirt, leaves, etc. If the boiler is closed, the clamping
strip under the casing must be removed first, check using a mirror if necessary.
Check the air box for dirt using a lamp. If the air box is dirty, it must be dismantled and blown clean. If the air box
is dirty, the following components must also be dismantled and blown clean:
non return valve
venturi
fan
Important!!
Ensure the balancing clips in the impeller stay in place!
Important!! The sealing between the burner and the mixing blend may be sticky. Prevent the sealing from
tearing. Damaged or hardened sealing must always be replaced.
15.4.2 Cleaning the non return valve
Use compressed air or a synthetic brush to clean the
non return valve.
15.4.3 Cleaning the Venturi
Use compressed air or a synthetic brush to clean
Venturi. Make sure that the hose between gas valve
and Venturi is clear and in good condition.
Fig. 29 non return valve being cleaned with soft brush
Fig. 30 Venturi being cleaned with compressed air
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