Burnham Revolution - X. Service and Maintenance Procedures; Low Water Cutoff Service

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X. Service
A. General. Inspection and service should be conducted
annually. Turn off electrical power and gas supply while
conducting service or maintenance. Follow instructions
TO TURN OFF GAS TO APPLIANCE. See Figure 45.
B. Low water cutoff (if so equipped).
1. Float Type
a. Monthly Blowoff. During the heating season, if
anexternaloattypelowwatercutoffisabove
the boiler, the blow off valve should be opened
once a month (use greater frequency where
conditionswarrant),toush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qualied
personnel, to the extent necessary to insure
freedom from obstructions and proper function-
ing 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oatwhenthistype
ofcontrolisused.Checkoatforevidenceof
collapse and check mercury bulb (where appli-
cable) 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eld.Completereplacementmechanisms,
including necessary gaskets and installation instruc-
tions, are available from the manufacturer.
C. Vent/Air Intake System. Inspect for obstructions, soot
accumulation, proper support, and deterioration of pipe,
ttings,andjoints.
1. Clean terminal screens. Terminals must be free of
obstruction, undamaged, with screens securely in
place.
2. Terminal and wall thimbles (if used) must be
weathertight.
DANGER
This boiler uses ammable gas, high voltage electricity, moving parts, and very hot water under high
pressure. Assure that all gas and electric power supplies are off and that the water temperature is cool
before attempting any disassembly or service.
Assure that all gas valves and electrical disconnect switches are off before attempting any disassembly
or service.
Do not attempt any service work if gas is present in the air in the vicinity of the boiler. Never modify,
remove or tamper with any control device.
WARNING
This boiler must only be serviced and repaired by skilled and experienced service technicians.
If any controls are replaced, they must be replaced with identical models.
Read, understand and follow all the instructions and warnings contained in all the sections of this
manual.
If any electrical wires are disconnected during service, clearly label the wires and assure that the wires
are reconnected properly.
Never jump out or bypass any safety or operating control or component of this boiler.
Read, understand and follow all the instructions and warnings contained in ALL of the component
instruction manuals.
Assure that all safety and operating controls and components are operating properly before placing
the boiler back in service.