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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
5.3
MAJOR COMPONENTS
5.3.1
Contactors
Periodic inspection and cleaning of contactors should be made. Check for pitted,
burned or welded contacts and inoperative coils. Discoloration of the terminals,
contacts and/or Bakelite is usually indicative of a loose connection or
failed//failing contactor.
5.3.2
Fuses
Check for loose fuse clips and wires. Inspect for discoloration of clips due to
overheating, which usually indicates a loose connection or bad clip contact..
5.3.3
Elements
The resistance type immersion elements are field replaceable with standard tools.
To replace defective elements, use the following procedure:
1.
Turn off power to the boiler
2.
Drain boiler below level of flange containing defective element.
3.
Number and tag element wires and terminals to assure proper reassembly
4.
Disconnect element wires to the flange
5.
Remove flange from boiler nozzle
6.
Remove buss bars, nuts, insulators and washers from the defective element
7.
Remove compression nut which holds the element in the flange
8.
Slide element through flange (toward terminal side) far enough to cut element
off behind compression ferrule
9.
Pull defective element back through flange
10.
Clean the ferrule seat in the flange
11.
Make certain replacement element is correct size. Check both the voltage and
KW rating stamped on the element itself
12.
Slide new element through flange (from element bundle side), making sure
orientation is correct.
13.
Install new compression fitting (ferrule) on element. Shorter end of element
should extend at least 1/8” beyond compression nut after tightening (refer to
element assembly sketch)
