Bedienungsanleitung Rendamax R3500 (Seite 48 von 51) (Englisch)

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The following activities must be carried out (for an extensive description of these activities, see

8.3):

- Renew the ignition and ionisation electrodes

- Clean the air inlet damper

- Clean the fan blades

- Clean the ﬂ ue gas collection chamber

- Clean the condensate trap and the drainage pipe from the appliance

- Clean the gas ﬁ lter

- Inspect all pressure measurement pipes and nipples.

- After removing the panels from the left hand side of the appliance, ignition and burning can be

observed from both front and rear via a sight glass.

- Test the unit at the ﬂ ue gas side for CO

and CO and correct these at both full and minimum

capacity if necessary.

- Check all the safety functions, and make any necessary adjustments.

- Measure the water temperature difference ∆T as a measure of the ﬂ ow rate.

- Check the water pressure

- Check the water quality: hardness and chloride content

- Record all data

- Clean the outside of all the panels and ensure that these all have a smart appearance.

8.3 Procedure

a) Disconnect the power supply

b) Close the gas supply valve

- The ignition and ionisation electrodes are ﬁ tted at the rear of the appliance.

- Remove the spark plug caps from the ignition and ionisation electrodes and inspect them for

possible damage, such as indications of burning or pollution (renew the spark plug caps if dam-

aged).

In order to carry out the following activities, the panels must ﬁ rst be removed.

- In order to clean the air inlet damper this must ﬁ rst be re moved. Clean it with a vacuum cleaner.

- For appliances installed in a dusty environment, the fan blades may become dirty. This will

result in the air supply being reduced and the fan becoming unbalanced. Clean the fan blades

with a brush. All loose dirt can be removed in this way.

- A trap is ﬁ tted under the condensate collection tank. Un screw the trap and clean it.

- A gas ﬁ lter is ﬁ tted at the start of the gas train.

This ﬁ lter can be cleaned as follows:

1 Close the gas valve on the boiler

2 Unscrew the six bolts securing the cover to the gas ﬁ lter

3 Carefully remove the ﬁ lter element

4 Clean the ﬁ lter element by shaking it. When it is heavily polluted, the ﬁ lter element must be

renewed.

5 Re-assemble the ﬁ lter

6 Check for leaks (soap solution).

- Inspect all the pressure measurement pipes. Ensure that these are securely fastened and

tighten the connection nuts if necessary.

- Inspect the screws in the measuring nipples; renew the measuring nipples if they have become

damaged.

- In order to measure gas and air pressures and to perform measurements at the ﬂ ue gas side,

calibrated test equipment must be employed.

- All test data must be recorded on the applicable test forms.

8.4 Cleaning the burner and heat exchangers

The burner and the heat exchangers can be cleaned internally with suitable media. For advice

concerning suitable media, consult the service department of your supplier.

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