RECOMMENDED SHUTDOWN PROCEDURE
TO MINIMIZE RISK OF FREEZING OR CORROSION
When high humidity or moisture is present in an air piping system, condensation of water can occur after the blower is
shut down and the blower begins to cool. This creates an environment favorable to corrosion of the iron internal
surfaces, or in cold weather, the formation of ice. Either of these conditions can close the operating clearances,
causing the blower to fail upon future start-up.
The following shutdown procedure outlined below minimizes the risk of moisture condensation, corrosion and
freezing. Care must be taken so as 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 a few (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 prior to shutdown. The lubricant will provide an excellent protective
coating on the internal surfaces. If using a spray lubricant, exercise care to prevent the applicator tube from getting
sucked into the blower. The applicator tube will damage the blower, most likely to the point that repair would be
required.
January, 2001
3-in-One and WD-40 are registered trademarks of WD-40 Company.
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