Before seasonal start-up, have a competent service
agency check the boiler for soot and scale in the
flues, clean the burners and check the gas input rate
to maintain high operating efficiency.
iAc o,,o.Ai
abel all wires prior to disconnection when I
ervicing controls. Wiring errors can cause I
proper and dangerous operation.
Verify proper operation after service.
The service agency or owner should make certain
the system is filled with water to minimum pressure
and open air vents, if used, to expel any air that may
have accumulated in the system. Check the entire
piping system and, if any leaks appear, have them
repaired.
Many circulators like the one pictured in Figure 18
require periodic servicing. The motor usually has
openings at each end to lubricate the bearings.
Put about one half teaspoon of SAE 20 or 30 non-
detergent motor oil in each opening twice a year.
The venting system should be inspected at the start
of each heating season. Check the vent pipe from
the boiler to the chimney for signs of deterioration by
rust or sagging joints. Repair if necessary. Remove
the vent pipe at the base of the chimney or flue and
using a mirror, check vent for obstruction and make
certain the vent is in good working order.
The boiler flue gas passageways may be inspected
by a light and mirror. Remove the burnerdoor. (Figure
17) Place a trouble lamp in the flue collector through
the draft relief opening. With the mirror positioned
above the burners, the flue gas passageways can
be checked for soot or scale.
The following procedure should be followed to clean
the flue gas passageways:
1. Remove the burners from the combustion
chamber by raising the burners up from the
manifold orifices and pulling toward the front of
the boiler. (Figure 17)
2. Disconnect the vent pipe from the draft
hood.
FIGURE 18J
Do Not Over Oil!!
Many circulators have an oil opening for the shaft
bearing. This should be oiled at the same time for quiet
operation. Follow the manufacturer's instructions for
oiling the shaft bearing.
3. Remove the top jacket panel.
4. Remove the combination flue collector and
draft hood from the boiler castings by loosening
the nuts on the hold down bolts located on each
side of the collector. (Figure 17)
5. Place a sheet of heavy paper or similar
material over the bottom of the base and brush
down the flue passageways. The soot and scale
will collect on the paper and is easily removed
with the paper.
With the paper still in place in the base, clean
the top of the boiler castings of the boiler putty
or silicone used to seal between the castings
and flue collector. Make certain that chips are
not lodged in the flue passageways.
When the cleaning process is complete, restore the
boiler components to their original position. Use
boiler putty or IS-808 GE silicone (available from a
Pennco distributor) to seal around the flue collector
and boiler castings.
(48 Seiten)
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