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Vapor Power International LLC
551 S County Line Road, Franklin Park, Il 60115
Phone: 630-694-5500 Fax: 630-694-2230
Upon completion of the control circuit checkout, de-energize the control
circuit, remove the jumpers and replace fuses, if applicable, and switch all of
the circuit enable switches to the off position.
4.3.2
Cleaning Boiler Interior
Prior to start-up, the boiler interior should be cleaned to remove oil, mill
scale and other construction and installation contaminants. A commercial
boiler “Boil Out” compound should be used, per their procedure, with the
boiler completely flooded. In lieu of a commercial boil out compound, the
following mix of chemicals can be used for every 250 gallons of water:
·
30 lbs tri-sodium phosphate (Na
3
PO
4
)
·
5 lbs caustic soda (NaOH)
·
2 lbs ordinary detergent
These chemicals should be dissolved in warm water prior to their addition to
the boiler. The boil-out can be accomplished per the following procedure:
1)
Remove all tools, rags, etc. from the boiler.
2)
Remove steam outlet piping.
3)
Fill boiler to just below the handhole/manhole with feedwater.
4)
Add the chemical solution thru the handhole/manhole.
5)
Close handhole/manhole.
6)
Fill boiler until water level is just below the steam outlet
7)
Energize the main power supply by closing the customer’s branch circuit
power switch.
8)
Make sure that all step toggle switches are in the off position, and then
energize the control circuit
9)
Operate 1 or 2 heater circuits (approx 10% of boiler capacity) to raise
water temperature.
10)
Once steam is observed at the steam outlet, allow boiler to boil for 2-3
hours. Note: Heater circuits may have to be de-energized during this
period to control the boil rate..
11)
Switch control circuit off and de-energize main power supply
12)
Drain boiler.
13)
Open handhole/manhole
14)
Rinse all walls and surfaces thoroughly with a garden hose
15)
Re-install steam outlet piping
