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2. Remove and clean the pump strainer (if applicable).
3. Replace the nozzle with an equivalent nozzle. See
Table 4.
4. Clean and inspect the electrodes for damage,
replacing any that are cracked or chipped.
5. Clean the combustion head of all lint and soot.
6. Inspect the transformer cables and connectors.
7. Remove and clean the cad cell.
8. Clean the blower wheel and the air control of any
lint.
9. Check all wiring for secure connections or
insulation breaks.
10.Re-adjust the burner as detailed in Section VII:
System Start-up, Paragraph F.
E. Controls. Test Controls for proper operation as
detailed in Section VII: System Start-up, Paragraph G.
F. Low water cutoff (if so equipped).
1. Float Type
a. Monthly Blowoff. During the heating season, if
an external float type low water cutoff is on the
boiler, the blow off valve should be opened once
a month (use greater frequency where conditions
warrant), to flush out the sediment chamber so
the device will be free to function properly.
b. Annual Service. Float type low water cutoffs
should be dismantled annually by qualified
personnel, to the extent necessary to insure
freedom from obstructions and proper
functioning of the working parts. Inspect
connecting lines to boiler for accumulation of
mud, scale, etc., and clean as required.
Examine all visible wiring for brittle or worn
insulation and make sure electrical contacts are
clean and that they function properly. Give
special attention to solder joints on bellows and
float when this type of control is used. Check
float for evidence of collapse and check mercury
bulb (where applicable) for mercury separation
or discoloration.
2. Probe Type (Annual Service). Probe type LWCO
should be removed once a year, examined and
cleaned of any dirt accumulations to assure proper
operations. Do not attempt to repair mechanisms in
the field. Complete replacement mechanisms,
including necessary gaskets and installation
instructions, are available from the manufacturer.