Technical information

FIG. 7.1

7. SERVICING INSTRUCTIONS

The life of individual components vary and they will need servicing or

replacing as and when faults develop.

he fault finding sequence chart in chapter 2 will help to locate which

component is the cause of any malfunction, and instructions for

removal, inspection and replacement of the individual parts are given

in the following pages.

7.1. REPLACEMENT OF PARTS

7.2. TO GAIN GENERAL ACCESS

All testing and maintenance operations on the boiler require the

control panel to be lowered. This will also require the removal of the

casing.

To lower the control panel and dismantle the front

part of the casing, proceed as follows:

To remove the front casing panel, follow these steps:

1. Remove the screws “A” (Fig. 7.1);

2. Loosen the four screws ‘B’ from the case hooks (two

at the top and two at the bottom) and rotate anti-

clockwise (Fig. 7.2);

3. Lift and unhook the case panel (Fig. 7.3);

4. Lower the control panel (Fig. 7.4)

To ensure efficient safe operation, the boiler must be serviced

annually by a competent person.

Before starting any servicing work, ensure both the gas and

electrical supplies to the boiler are isolated and the boiler is

cool.

Before and after servicing, a combustion analysis should be made

via the flue sampling point (please refer to 3.6.3).

After servicing, preliminary electrical system checks must be carried

out to ensure electrical safety (i.e. polarity, earth continuity,

resistance to earth and short circuit).

FIG. 7.3

FIG. 7.2