Bedienungsanleitung Morco GB24 SII (Seite 25 von 36) (Englisch)

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SECTION 7 - ROuTINE SERvICINg INSTRuCTIONS

7.1

SERVICING SCHEDULE

Fortheverylatestcopyofliteratureforspecication,maintenancepracticesandpartsreplacement,visitourwebsitewww.morcoproducts.co.uk

where you will be able to download the relevant information.

WARNING. Always turn OFF the gas supply at the gas service cock, and switch OFF and disconnect the electricity supply to

the appliance before servicing.

Combustion testing must be carried out by a competent person using a combustion analyser conforming to BS7927.

Toensurethecontinuedsafeandefcientoperationoftheapplianceitisrecommendedthatitischeckedatregularintervalsand

serviced as necessary. The frequency of servicing will depend upon the installation condition and usage but should be carried out at

least annually.

ItisthelawthatanyserviceworkmustbecarriedoutbyaGasSafeRegisteredEngineer,orinothercountriesaqualiedand

competent Gas Installer.

INSPECTION

1. Light the boiler and carry out a pre-service check, noting any

operational faults.

2.Checktheueterminal(andterminalguardiftted)is

undamaged and clear of any obstruction.

3. Check all water and gas joints for signs of leakage. Remake

any suspect joints ensuring a gas tightness check is carried

outifapplicableandthewatersystemiscorrectlyrelled,

vented and re-pressurised.

CLEANING PROCEDURE

Note. In order to carry out either servicing or replacement of

components the boiler upper and lower front panels must

be removed. Refer to Frame 7.2.

1. Clean the main burner. Refer to Frame 7.4.

2. Cleantheheatexchanger&condensatetrap/siphon.Referto

Frames7.5&7.6.

Check the main injector for blockage or damage. Refer to

Frame 7.3.

4. Checkthattheueterminalisunobstructedandthattheue

system is sealed correctly.

The cleaning procedures are covered more fully in Frames 7.3-7.7

and MUST be carried out in sequence.

IMPORTANT.

5. After completing the servicing or exchange of components

always test for gas tightness.

6. When work is complete the front panels MUST be correctly

retted,ensuringthatagoodsealismade.

Do NOT OPERATE the boiler if the upper front

panel is not tted.

7. If, for any reason, the condensate trap/siphon has been

removedensurethetrapisrelledwithwaterbefore

reassembling.

8. Check the gas consumption if on metered installations.

Checkcombustionbyconnectingtheuegasanalysertothe

uegassamplingpointasshowninthediagramandmeasure

CO&CO

. (Refer to Section 10, page 35).

If the CO/CO

ratio is greater than 0.004 AND the integrity of

thecompleteuesystemandcombustioncircuitsealshave

beenveriedandtheinletgaspressurehavebeenveried,

then contact Morco.

Flue Sampling Point

Air Sample

Point

Ensure all caps and seals

are re-fitted after use

GENERAL

Please Note: During routine servicing, and after any maintenance

or change of part of the combustion circuit, the following must be

checked:

- Theintegrityoftheuesystemandtheueseals,

- The integrity of the boiler combustion circuit and the relevant seals

- The operational (working) gas inlet pressure at maximum rate.

Turn on one or more DHW taps.

- The combustion performance.

COMPETENCE TO CARRY OUT THE CHECK OF

COMBUSTION PERFORMANCE

Please Note: BS6798:2009Specicationforinstallationand

maintenanceofgas-redboilersofratedinputnotexceeding70kW

net advises that:

- The person carrying out a combustion measurement should have

beenassessedascompetentintheuseofauegasanalyserand

the interpretation of the results.

- Theuegasanalyserusedshouldbeonemeetingthe

requirements of BS7927 or BS-EN50379-3 and be calibrated in

accordance with the analyser manufacturers requirements, and

- Competence can be demonstrated, for example, by satisfactory

completion of the CPA1 ACS assessment (UK Only), which

covers the use of electronic portable combustion gas analysers in

accordance with BS7967, Parts 1 to 4.

SERVICE MODE

To access the service mode:

Using the central heating potentiometer, starting from the 11 o’clock

position, move the thumb piece to the maximum position, back to the

11o’clockpositionandthennallynishatthemaximumposition.

The letter “S” will now be displayed.

To toggle to maximum DHW output move the thumb piece up to

the 11 o’clock position and then back to maximum. A minimum of 3

seconds will reset the boiler back to normal mode.

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