Manual 2007 Rev B p/n 2007
27
06
Operation
CAUTION
!
Water injection can cause lime build-up on
rotors. Check water supply for hardness. The
use of water softeners, other chemicals, or
distilled water may be necessary to prevent
or remove this build-up. However, due to
the wide variations in mineral content, pH,
and chemical content of water that can be
injected, Tuthill Vacuum & Blower Systems
cannot be responsible for damage which
may result should this build-up occur. Units
should be inspected regularly to determine
any problems.
For liquid injection other than water, consult
the factory.
RECOMMENDED SHUTDOWN
PROCEDURE TO MINIMIZE RISK
OF FREEZING OR CORROSION
When an air piping system has high humidity or
moisture, water condensation can occur after
the blower is shut down and it begins to cool.
Condensation creates an environment favorable
to corrosion of the iron internal surfaces and to
ice formation in cold weather. Both conditions can
close the operating clearances, causing the blower
to fail upon future start-up.
The following shutdown procedure minimizes
the risk of moisture condensation, corrosion, and
freezing.
Care must be taken not to overload or
overheat the blower during this procedure.
1. Isolate the blower from the moist system
piping, allowing the blower to intake
atmospheric air. Operate the blower under a
slight load, allowing the blower to heat within
safe limits. The heat generated by the blower
will quickly evaporate residual moisture.
2. For carpet cleaning applications, after the work
is completed, simply allow the blower to run
3 – 5 minutes with the suction hose and wand
attached. The suction hose and wand will
provide enough load to the blower to evaporate
the moisture quickly.
3. For extended shutdown, inject a small amount
of a light lubricating oil such as 3-in-One
®
or a
spray lubricant such as WD-40
®
into the inlet
of the blower just before shutdown. (3-in-One
and WD-40 are registered trademarks of
WD-40 Company.) The lubricant will provide
an excellent protective coating on the internal
surfaces. If using a spray lubricant, take care
to prevent the applicator tube from getting
sucked into the blower. The applicator tube will
damage the blower, likely to a degree where
repair would be required.
4. If the blower is being taken out of commission
for an extended period of time, see Long-
Term Storage on page 30.
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