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Vapor Power International LLC
551 S. County Line Road, Franklin Park, Il 60131
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.
Energize the main power supply by closing the customer’s branch circuit
power switch.
Repeat steps A and B above to “start” the boiler.
Using the enable switches, gradually switch on the circuits.
Individually check each element circuit to assure that each leg is drawing its
rated current.
NOTE: SOME POWER FUSES MY BLOW AT STARTING DUE TO WATER OR OTHER
CONTAMINATION ON THE ELEMENT TERMINALS, SINCE THIS
CONTAMINATION USUALLY “BURNS” FREE, MERELY CHECK THE CIRCUIT
FOR A SHORT AND THEN REPLACE THE FUSE. IF A SHORT EXISTS,
HOWEVER, REPLACE THE DEFECTIVE ELEMENT PER PARGRAPH 5.3.3
4.4
BOILER SHUTDOWN
Switch the control circuit power off. For boilers supplied with step controls,
this will automatically recycle the step controller to no load so that when the
boiler is again switched on, no contactors will be initially energized.
