Manual 2003 Rev D p/n 2003
25
06
Operation
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 booster 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
booster to fail upon future start-up.
The following shutdown procedure minimizes
the risk of moisture condensation, corrosion, and
freezing.
Take care not to overload or overheat the
booster during this procedure.
1. Isolate the booster from the moist system
piping, allowing the booster to intake
atmospheric air. Operate the booster under a
slight load, allowing the booster to heat within
safe limits. The heat generated by the booster
will quickly evaporate residual moisture.
2. For carpet cleaning applications, after the
work is completed, allow the booster to run
3 – 5 minutes with the suction hose and
wand attached. The suction hose and wand
will provide enough load to the booster 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 booster 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 booster. The applicator tube
will damage the booster, likely to a degree
where repair would be required.
4. If the booster is being taken out of commission
for an extended period of time,
see Long-
Term Storage on page 28
.
