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of throttle or shut-off valves in either discharge or intake piping. If it is possible for air fl ow to be cut off in
either of these lines, make provisions to add a pressure and/or vacuum relief valve. In some installations,
it may be desirable to use only an inlet silencer-cleaner supported directly from the blower connection.
Weight of accessories and piping must be kept to a minimum to prevent blower casing distortion. Weights in
excess of 10% of blower weight should be supported independently of blower and connected with a fl exible
hose or connectors. (The approximate weight of your unit is included within the
Specifi cations
table.)
A blower may be driven by direct-coupling to the driver or by V-belt drive, to obtain other speeds within
approved range. (See the
Motor Drives
section for more information.)
Blowers from Tuthill Vacuum & Blower Systems are internally and externally treated after factory assembly
and testing to protect against rusting in normal atmospheric conditions prior to installation. The maximum
period of internal protection is considered to be up to 6 months under average conditions, provided closing
plugs and seals are not removed. Protection against chemical or salt water atmosphere is not provided.
Avoid opening the blower until ready to begin installation, as protection will be quickly lost due to evaporation.
(For recommended preparations for long term storage (longer than 6 months), please see the
Long Term
Storage
section in this manual.)
5.1.1 LOCATION
Install your blower in a room or outdoor area that supplies adequate space and lighting for routine
maintenance. Indoor installation areas should be well ventilated and kept as cool as possible, because
operating the unit at elevated temperatures can result in nuisance overload or temperature shutdowns. An
unprotected outdoor installation is only satisfactory when correct lubrication for expected temperatures is
provided, as per the
Recommended Lubricants
section in this manual.
5.1.2 BLOWER AIR INTAKE
To minimize maintenance, supply your blower with the cleanest air possible. It is important that the air does
not contain any fl ammable or toxic gases, as the blower will concentrate these gases. This could result in
damage to the unit and surrounding property, lead to personal injury or death. Do not block or restrict the
opening or the blower and/or motor may overheat and fail.
Do not use blowers on explosive or hazardous gases. Each size blower has limits on pressure differential,
running speed, and discharge temperature. These limits must not be exceeded. Consult Table 2 for details
pertaining to the allowable performance criteria.
If it is necessary to take air from a remote source, such as in a vacuum application, the piping should be
at least the same diameter of the blower inlet. For distances greater than 20 feet (6 m) the pipe diameter
should be enlarged to reduce inlet restriction. Excessive restriction will reduce the effi ciency of the blower
and elevate its discharge temperature. The piping used should also be corrosion resistant, and free of
scale and dirt. The inlet should be covered to keep out precipitation, insects, and small animals. Vacuum
kits are available.
