8
03
Installation
Operator’s Manual 2010 Rev B p/n 2010
FOUNDATION
The blower does not need a special foundation.
However, it does require a solid, level floor and
adequate frame support.
LOCATION
Install the blower in a protected indoor location,
if possible. An unprotected outdoor installation
is satisfactory only when correct lubrication for
the expected temperatures is provided.
See
Recommended Lubricants for Rotary Blowers
and Vacuum Boosters on page 26
. Just before
starting the installation, remove plugs or covers
from inlet and discharge connections. Inspect for
dirt or foreign objects inside machine, and then
turn the drive shaft by hand to make sure it rotates
freely. Mount in a level position. Use a baseplate
that is rigid, solidly supported, and structurally
sound. Make sure the feet rest evenly on the plate
before fastening down. Twisting or cramping the
blower during mounting will cause rotor contact
and binding during operation.
SOFT FOOT
Soft foot is a condition in which one of the blower
feet does not sit flat on the base. Usually, this is
due to irregularities in the surface to which the
blower is mounted. When you tighten the bolt on
the foot, the blower will distort slightly, but enough
to cause problems with bearing and seal life, and
premature internal contact between the rotors and
the housing.
1. Place blower on base.
2. Check each foot for gaps between foot and
base (soft foot), shim as necessary to fill gap
within .002
in.
(.05 mm). Below are shown the
two most common types of soft foot conditions.
If either type is present, and measures more
than .003
in.
(.076 mm), the blower may fail
prematurely.
3. Tighten all bolts.
4. Mount a dial indicator on base contacting one
foot at 12 o’clock position.
5. Loosen bolt on that foot. Observe indicator
travel and add shims as needed to reduce
“spring” to less than .002
in.
(.05 mm). Repeat
steps 4 and 5 on remaining feet.
ANGULAR
SOFT FOOT
PARALLEL
SOFT FOOT
Figure 3-2 – Illustrations of Soft Foot
Transmission of small operating vibrations to
a support structure may be objectionable in
some applications. Use of vibration isolators or
vibration-absorbing materials can be effective in
overcoming this transmission. To avoid causing
distortion, apply the treatment under the common
motor/blower base or mounting plate rather than
directly under the feet alone. Make sure piping is
accurately squared with the blower and supported
independently. Use only clean, new pipe, and make
certain it is free of scale, cuttings, weld beads, dirt,
or any other foreign material.
To guard against damage to the blower, make
sure that an inlet filter is used. Clean the filter of
collected debris after 3 hours of operation and
periodically thereafter.
Summary of Contents for 3200
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