Operating instructions

2
The following terms are used throughout this manual to bring attention to the presence of hazards of various risk
levels, or to important information concerning product life.
CAUTION
Probe type low water cutoff devices require annual inspection and maintenance! Although these devices
are solid state in their operation, the probe is exposed to possible contamination in the boiler water and
subject to fouling. Refer to Low Water Cutoff Service Instructions for complete, step-by-step inspection
and cleaning instructions.
CAUTION
If, during normal operation, it is necessary to add water to this boiler more frequently than once a month,
consult a qualified service technician to check your system for leaks. A leaky system will increase the
volume of make-up water supplied to the boiler which can significantly shorten the life of the boiler.
Entrained in make-up water are dissolved minerals and oxygen. When the fresh, cool make-up water is
heated in the boiler the minerals fall out as sediment and the oxygen escapes as a gas. Both can result in
reduced boiler life. The accumulation of sediment can eventually isolate the water from contacting the cast
iron. When this happens the cast iron in that area gets extremely hot and may eventually crack. The
presence of free oxygen in the boiler creates a corrosive atmosphere which, if the concentration becomes
high enough, can corrode the cast iron through from the inside. Since neither of these failure types are a
result of a casting defect the warranty does not apply. Clearly, it is in everyone's best interest to prevent
this type of failure. The maintenance of system integrity is the best method to achieve this.
DANGER
Indicates an imminently hazardous situation
which, if not avoided, will result in death,
serious injury or substantial property damage.
CAUTION
Indicates a potentiall
y
hazardous situation
which, if not avoided, ma
y
re sult in
moderate or minor in
j
ur
y
or propert
y
dama
g
e.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death,
serious injury or substantial property damage.
NOTICE
Indicates special instructions on
installation, operation, or maintenance
which are important but not related to
personal injury hazards.