Sheet 5643-4 Page 2
SINGLE BURNER INSTRUCTION S
Initial Start-up
1. Sensitrol Valve E and bypass valve H must be closed.
11. Make curtain adjustment for desired high firing rate.
2. Turn handwheel on oil differential pressure regulator A fully clockwise (for maximum differential pressure setting).
12. Return valve to low position and adjust linkage for desired low firing rate.
13. Repeat steps 11 and 12 if necessary, for desired control of high to low fire settings.
3. With steam flowing, set outlet pressure of regulator B to give desired reading at gauge P5 .
Subsequent Start-up
4. Set curtain and lever of adjustable port valve D (atom- izing steam control valve) to give desired range of pressure at gauge P9 during full stroke of valve operator G .
1. Set operator G to minimum position.
2. Open Sensitrol Valve E fully to light burner.
5. Set the curtain in oil adjustable port valve C ½ open.
Operation. The steam flow determines P8 and P9 . With no oil flow, P9 is approximately equal to P8 . As valves C and D open, both pressures increase. The difference between P8 and P9 required to produce a given oil flow depends on atomizer size as well as firing rate. The pressure difference ranges from imperceptible on the larger sizes (-1, -3) to approximately 25 psi on the smallest (-01) atomizers.
6. Set the linkage between oil valve C and operator G so that full stroke of the operator results in moving the oil valve from approximately ¼ open to full open.
7. Set operator G to minimum position.
8. Light burner by fully opening Sensitrol Valve E , and ad- justing curtain on oil valve C for stable frame.
The flow rate of the atomizing agent is greatest at no oil flow and least at maximum oil flow, for the same reading of P9 .
9. Drive operator G to high fire in steps, adjusting curtain on oil valve C as required to maintain flame.
Changing the oil pressure at P2 can cause readings to vary. Steam traps are necessary at all low points in the steam line. (Some steam superheat is desirable.)
10. At high valve position, adjust handwheel on regulator A for desired pressure difference between P4 and P6 (typically 10 psi.)
Because of gauge inaccuracy, it is necessary to move the same gauge from point to point in order to obtain an accurate indication of relative pressures.
PURGING ATOMIZER
5. Allow sufficient time for steam to purge the oil tube and then close valves E and H . 6. Steam should continue to flow through valve F to purge any oil that may have been blown into the steam tube after which valve F may be closed.
1. Close oil valve J . 2. Set operator G wide open. 3. Fully open valves E and H . 4. Throttle valve F until P9 is 5 psi (0.35 kg/cm 2 ) less than P8 .
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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