Roberts Gorden MGB Series Manual de servicio descargar pdf (Pagina 58)

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CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL

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3. For oil-fired burners it is recommended that the

atomising oil nozzle be replaced during the

annual service.

12.3 Fan/Motor Assembly Maintenance (all

models)

The main fan bearings are permanently sealed and

do not need lubrication. Before cleaning, turn off fuel

and electrical supply. Remove the heater side

panels and use a small brush or duster to clean the

fan blades from each side. Replace panels when

done.

Figure 23: Belt Tension

Check the condition and tension of the drive belts.

The condition is best inspected with the belts

removed. Check for chaffing or lateral cracks.

Replace belts as a matched pair as necessary.

Do not over-tighten belts, as this may cause bearing

damage.

12.4 Heat Exchanger Maintenance

Ensure that the front collector box is clean and that

the turbulators fitted to the tubes are in good

condition.

Also inspect the joint between the heat exchanger

and the flue to ensure that it is still sealed.

1. If maintenance is needed, remove the burner.

See Page 63, Section 15.1.

2. Remove the upper front panel.

3. Remove the front cover of the heat exchanger.

4. Remove and inspect the turbulators.

5. Clean out any deposits from flue ways and the

combustion chamber, using a vacuum cleaner

and brush. Inspect the combustion chamber

and heat exchanger for damage or corrosion.

6. Any damage must be referred to

Roberts-Gordon Europe Limited.

7. Replace components in reverse order to above

- replacing gasket material and any damaged

turbulators.

8. Inspect and repair any damage to the seal

between the flue and the flue spigot.

12.5 Thermal Insulation

While the upper panels are removed for heat

exchanger servicing, the thermal insulation fitted to

all the upper panels must be inspected. Insulation

should be sound, with the foil face in good condition.

If any thermal insulation is in poor condition, then it

must be replaced with new insulation material and

suitably sealed at the edges with adhesive foil tape.

Motor

Pulley

Fan

Pulley

8 mm to 10 mm

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Roberts Gorden MGB Series Manual de servicio Pagina 58

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