750-136
Model WB Electric Boiler Manual
3-1
CHAPTER 3 Pre-Start Preparation
3.1 — Inspection
Boilers which have been exposed to dust, wet and/or humid conditions must be thoroughly cleaned and dried
out. Otherwise, the buildup of dust and rust on the contactors, or moisture at the terminal end of the elements,
may result in severe damage.
The following precautions must be undertaken:
1. Make certain all electrical connections and element terminals are thoroughly cleaned, dried, and checked for
loose connections.
2. Inspect all contactors, fuse bases, and wire bundles for stray or loose metal objects (screws, bolts, metal
shavings, knockout slugs, etc.) that may lodge there. All such material must be removed before startup.
Make certain that you have read and understand Chapters 1 and 2 before proceeding.
Pre-startup should be performed by a qualified technician who is familiar with this equipment.
Failure to heed this warning may result in serious personal injury or death.
Disconnect and lockout the main power to avoid the hazard of electrical shock, which could cause serious personal
injury or death.
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