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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
5.2
MAJOR COMPONENTS
5.3.1
Contactors
Periodic inspection and cleaning of contact should be made. Spot check for
pitted, burned or welded contacts and inoperative coils. Discoloration of
the contacts and/or Bakelite is usually indicative of a failed or failing
contactor.
5.3.2
Fuses
Check for loose fuse clips and wires. Inspect for discoloration of clips due
to overheating.
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, #10-32 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
