A.O. Smith 110 Boiler User Manual


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Installation and Service Manual Upsilon-Series
50
13 Inspectionandmaintenance
Boiler maintenance is only to becarried out by qualied staff with calibrated
equipment.
WhenreplacingsparepartsonlyoriginalA.O.SmithServicepartsaretobeused.
PleasecontactA.O.Smith.
13.1Maintenanceintervals
Maintenance has to be carried out after 16,000 operational hours max. or every 4 years,
whatever comes rst.
Depending on the intensive use of the device, maintenance intervals will have to be
decreased accordingly. For other situations, maintenance intervals may also have to be
decreased. In such cases, please contact A.O.Smith for additional advice.
Inspection and maintenance tasks have to be carried out in accordance with the main-
tenance instructions at all times. Some tasks are described in these maintenance instruc-
tions. For complete inspection and maintenance instructions, please contact A.O. Smith.
Whencarryingoutmaintenanceontheboiler,thegastaphastobeclosedand
securedagainstopening.
The housing has to be removed in order to carry out maintenance jobs on the boiler. The
housing has been secured by 4 quick-lock nuts. First, remove the screws from the quick-
locks, open the quick-locks, lift up the housing from below and move it away to the front.
13.2Checkspriortocommissioning
Changing settings such as burner pressure and setting the amount of air is not necessary.
Only in the case of failures or replacement of the gas unit, venturi and/or ventilator, does
one have to check and adjust the zero-pressure control and O
2
percentage accordingly
(Refer to Help reference).
Followingmaintenancetasksalwayscheckallgas-conductingcomponentson
leakagesbyuseofleakagedetectionspray.
Removing housing gure 13.1.a
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