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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
4.3 BOILER START-UP
A.
Close blow down, drain and steam stop valves.
B.
Open the feedwater and sight gauge valves
C.
Manually fill the boiler with water to approximately the middle of the
sight gauge
WARNING
ENERGIZING THE HEATING ELEMENTS BEFORE FILLING THE BOILER TO ITS
PROPER WATER LEVEL WILL DAMAGE THE HEATING ELEMENTS, THUS
VOIDING THE WARRANTY. EVEN THOUGH A LOW WATER CUTOFF IS
PROVIDED WITH THE BOILER, THE BOILER SHOULD NEVER BE SWITCHED
ON WITHOUT FIRST ASSURING THAT THE WATER LEVEL IS NORMAL
4.3.1
Control Circuit Checkout
If a separate branch circuit is provided for the 120V control, close the
customer’s 120V branch circuit power switch; if a control circuit transformer
is provided, remove both the primary and secondary fuses and jump a 120V
power supply to the secondary of the control transformer.
A. Switch the control circuit power on, the switch should light to indicate
that the control circuit power is energized.
B. Circuits of heating elements will now be switched on by the step
controller or pressure controllers, and pilot lights will light indicating
that this function is taking place and, thus, that the controls are
operating correctly.
NOTE: IF A CONTACTOR “CHATTERS”, BLOW IT OUT WITH AIR AND THEN CYCLE
IT SEVERAL TIMES BY USING THE APPROPRIATE MANAUL ENABLE
TOGGLE SWITCH.
For boilers supplied with step controls, check the recycle feature by briefly
interrupting the control power – the step control should recycle and start in a
no- load condition. Perform maintenance checks of the control circuit per
paragraph 5.2
