FULTON VSRT Series, Инструкция по установке, эксплуатации и обслуживанию

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© Fulton Group N.A., Inc. 2022
4-4
MAINTENANCE & TROUBLESHOOTING
VSRT-IOM-2022-0728
SECTION 4
4
CAUTION
If the feed water is being treated by chemical
compounds, make sure that this treatment
is carried out carefully and according to the
supplier’s instructions.
Flame Scanner Adjustments for Fulton Gas Fired
Steam Boilers
Flame detector adjustments are made with the detectors installed and the
burner running. It is essential to obtain optimum flame signal detection for safe
and continual operation of the control relay
If a detector is inoperable, it may prove the detector is working and only an
adjustment to the flame is needed to improve the signal.
If the detector is found to be defective, replace.
Adjustments to establish a good signal may include the following:
• Air damper adjustments in the combustion settings.
• Adjusting gas pressure through the gas regulator.
Recommended Daily Maintenance Schedule
The following procedures should be carried out daily as recommended
maintenance. They are designed to prevent the buildup of scale, silt, or sludge in
the bottom of the boiler and in the pipes leading to the water gauge. In addition
to these procedures, the advice of a water treatment supplier should be sought
and followed. An ASME Section VIII blowdown tank must be provided.
1. Blow down the boiler each morning by starting the boiler and generating
not more than 10 PSI (.7 kg/cm2) of steam. Turn on cooling water to
blowdown tank, if equipped, then open the boiler blo
w off valve for
approximately 10 seconds, then close valve. See Figure 35 . Be sure that the
slow opening valve (Y-Valve) is adjusted properly. The slow opening valve
is to be adjusted so that only 1-2” of water empty from the boiler sight
glass during the 4-10 second bottom blowdown. During each blowdown,
there should be 1-2” of level drop in the sight glass. If a manual method of
cooling water is used, be sure to shut off the cooling water supply. If there
are two bottom blowdown connections on the boiler, both should be
blown down daily.
QUICK OPENING VALVE
SLOW OPENING VALVE
FIGURE 35 - BOTTOM BLOWDOWN VALVES