Mixergy M0008, Инструкции по установке и обслуживанию

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32
Servicing
ANNUAL MAINTENANCE should be performed by a competent
operative.
Failure to maintain this system in accordance with these instruc-
tions will invalidate the manufacturer’s warranty. A maintenance
record should be kept on the service record on page 33 of this
booklet. We would recommend a service program is arranged on
installation. Failure to maintain this record will invalidate the man-
ufacturer’s warranty.
Annual service checks
• Expansion relief valve– manually open the twist cap and check
that the water is discharged and runs clearly through the
Tundish and out at the final discharge point. Ensure that the
valve re-seats/re-seals itself.
• Pressure & temperature relief valve - repeat the above proce-
dure. Ensure that the valve re-seats/re-seals itself.
• Strainer - turn off mains at stopcock. There will be a small
amount of residual water in the pipework, remove the car-
tridge from Pressure Reducing Valve, clean Strainer and re-
place.
• Expansion vessel - check pressure via the valve on top of the
vessel which is located under the plastic cap. Ensure pressure
is 3 Bar. Vessel can be recharged if required as per “Recharging
Expansion Vessel” on page 26.