Manual 2003 Rev D p/n 2003
12
05
Installation
If it is necessary to take air from a remote source,
such as in a vacuum application, make sure
diameter of the piping is at least equal to the
diameter of the booster inlet. For distances greater
than 20 ft (6 m), enlarge the pipe diameter to
reduce inlet restriction. Excessive restriction will
reduce the efficiency of the booster and elevate
its discharge temperature. The piping used should
also be corrosion resistant and free of scale and
dirt. Keep the inlet covered to keep out foreign
objects and rain. Vacuum kits are available.
Foundation
The booster does not need a special foundation.
However, it does require a solid, level floor and
adequate frame support. Bolt the booster to the
floor and seal any cracks.
Location
Install the booster in a room or outdoor area
that supplies adequate space and lighting for
routine maintenance. Make sure that indoor
installation areas are well ventilated and kept
as cool as possible, because operating the
booster at elevated temperatures can result in
nuisance overload or temperature shutdowns.
An unprotected outdoor installation is satisfactory
only when correct lubrication for the expected
temperatures is provided.
See Assembly
Clearances on page 4133
.
Soft Foot
Soft foot is a condition in which one of the booster
feet does not sit flat on the base. Soft foot is
usually due to irregularities in the surface to which
the booster is mounted. When the bolt on the
foot gets tightened, a slight distortion occurs that
can affect bearing and seal life as well as internal
contact between parts.
ANGULAR
SOFT FOOT
PARALLEL
SOFT FOOT
Figure 5-1 – Illustrations of Soft Foot
1. Place the booster on base.
2. Check each foot for gaps between the foot
and base (soft foot). Shim as necessary to fill
gap within 0.002 in. (0.05 mm).
Figure 5-1
shows the two most common types of soft
foot conditions. If either type is present at a
measurement of more than 0.003 in. (0.076
mm), the booster may fail prematurely.
3. Tighten all bolts.
4. Mount a dial indicator on base contacting one
foot at 12 o’clock position.
5. Loosen the bolt on that foot. Observe indicator
travel and add shims as needed to reduce
“spring” to less than 0.002 in. (0.05 mm).
Repeat steps 4 and 5 on remaining feet.
