Columbia L-24, Руководство пользователя, Страница: 28 / 60

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The Model L-24 Boiler has a special swing door assembly for cleaning the fire chamber.
Hinge bolt and nut
Hinge bolt and nut
If burner is hard piped, disconnect pipe fittings to allow door to swing freely. Insure that the burner
door is not hot. Remove 2 hex nuts from the middle of the handle side of the door. (see above left) Do
not remove the upper and lower hex nuts that hold the burner plate on the boiler. Remove 2 hex nuts
from the middle of the hinge side of the door. (see above right) Do not remove the upper and lower hex
nuts that hold the burner plate on the boiler. Loosen the 2 hex nuts located on the door hinge bolts (see
above right) just enough to allow the door to pull away from the boiler. This will provide enough
clearance for the door to pivot on the bolt hinges and clear the boiler. Pull door away from the hinge
point and swing door open with side handle.
1. Remove the smoke hood access panel and gasket on rear of boiler. (WL60)
2. Using a flat flue brush, brush the accumulated soot and scale starting in the rear of the boiler brushing
the top row of tubes and the crown sheet first, proceed to brush down the tubes from the front starting
at the top and working down.
3. Brush the side wall of the firebox through the burner opening.
4. Carefully scoop or vacuum the soot and scale which is now lying in the chamber of the boiler.
Refractory material can become soft and brittle after firing and can be subject to damage from harsh
handling.
Draining
A clean, properly maintained heating boiler should not be drained unless there is a possibility of freezing,
unless the boiler has accumulated a considerable amount of sludge or dirt on the water side, or unless draining
is necessary to make repairs. Very little sludge should accumulate in a boiler where little to no makeup water is
added to a properly operating system.
Antifreeze
• Antifreeze solutions when used in heating systems should be of the ethylene glycol base type with an
inhibitor added.
• Antifreeze concentrations should be not less than 33% nor more than 66%. The service life of
antifreeze depends on such factors as heating system design, hours of operation, aeration and rates of
contamination. Therefore, the antifreeze solution should be tested at least once per year and as
recommended by the manufacturer.
• Ethylene glycol solutions are harmful or may be fatal if swallowed. Therefore, ethylene glycol solutions