where conditions warrant) to flush out the sediment | discoloration. Probe type low water cutoff should be | |
chamber so the device will be free to function properly. | removed once a year, examined and cleaned of any | |
Low water fuel cutoffs and water feeders should be | dirt accumulations to assure proper operation. Do not | |
attempt to repair mechanisms in the field. Complete | ||
dismantled annually by qualified personnel, to the | ||
replacement mechanisms including necessary gaskets | ||
extent necessary to insure freedom from obstructions | ||
and installation instructions are available from the | ||
and proper functioning of the working parts. Inspect | ||
manufacturer. | ||
connecting lines to boiler for accumulation of mud, | ||
| ||
scale, etc. and clean as required. Examine all visible | 9 LUBRICATION | |
wiring for brittle or worn insulation and make sure | There are no parts requiring lubrication on the part of | |
electrical contacts are clean and that they function | ||
the serviceman or the homeowner. Circulator bearings | ||
properly. Give special attention to solder joints on | ||
are water lubricated. Fan motor bearings are factory | ||
bellows and float when this type of control is used. | ||
sealed. | ||
Check float for evidence of collapse and check mercury | ||
| ||
bulb (where applicable) for mercury separation or |
|
Figure 16
CLEANING OF VENT SYSTEM, BOILER FLUES, AND BURNERS
24
