5
Time-Honored Features
Vilter’s attention to detail shows wherever you look. Over a cen-
tury of experience in refrigeration compressor design goes into
each and every part that comprises the 450XL.
We have designed our component parts to work together, not just
fi t together. That’s why Vilter guarantees that all Genuine Vilter
Parts will match your Vilter compressor dimensionally, metallurgi-
cally and thermally for optimum compressor performance.
With Genuine Vilter Parts, you can be assured of getting the engi-
neering design and special construction features that only Vilter
can offer. Consider some of the special manufacturing steps that
Vilter parts go through:
•
Select surfaces are shot-peened for added strength
•
Mating faces are lapped for greater compressor effi ciency
•
Many parts are ultrasonically inspected for maximum reliability
•
The steels used are of special alloys for durable performance
•
Exacting tolerances are measured in light bands rather than in
hundredths of millimetres
The Vilter 450XL Full Two-Year Warranty
The 450XL compressor is fully warranted against defects of materi-
als and workmanship under normal use and service, for a period
of two years from date of shipment regardless of startup date.
For example, if startup occurs one month from shipping date, the
customer will have a full twentythree (23) months of warranty
coverage after startup.
Genuine Vilter Parts
When you need parts for your 450XL
compressor – whether for repair work or
scheduled maintenance – make sure you
specify Genuine Vilter Parts.
Look for the Genuine Vilter Part mark that
is either etched or stamped directly on all major Vilter parts. It’s
your assurance of Vilter warranty protection. In some cases, where
a replacement part does not lend itself to stamping or etching,
a blue tag will identify the part as a Genuine Vilter Part. Vilter re-
placement parts (except those too big to box) are shipped in boxes
that have the Genuine Vilter Part mark right on the box itself.
Don’t be misled by look-alike, no-name imitations of Vilter com-
pressor parts that carry vague warranties. Cheap parts can become
an expensive mistake. Make sure you insist on using only Genuine
Vilter Parts, and that you contact an Authorized Vilter Distributor
(or Vilter direct) for all your 450XL parts requirements.
Piston, Pin and Ring
Assembly
Connecting Rod,
Bearing and Bushing
Capacity Reduction System
Ductile Iron Crankshaft
Spring Loaded Safety
Heads
•A shrink-fi t wrist pin is used
to increase bearing load
capacity.
• Hardened steel wrist pins
are ground and polished to
size.
• Three cast iron compression
rings and one oil ring provide a
positive seal while wiping oil
back to the crankcase.
• Replaceable insert bearing
improves lubrication and
load carrying capacity.
• Forged connecting rods
back the precision-made,
steel-backed Babbitt insert
bearing.
• Grooved wrist pin bushings
are fed with pressurized
lubricating
oil.
• Designed with a bigger
crankpin diameter for greater
load bearing and bearing
surface.
• All crankshafts are statically
and dynamically balanced for
reduced
vibration.
• Precision drilled crankshaft
ensures proper lubrication
through the compression
cycle.
• The 6, 8, 12, and 16-cylinder
crankshafts are shot-peened
for greater strength.
• Spring loaded safety heads
provide protection against
liquid
slugging.
• The suction and discharge
porting improve compressor
effi ciency.
• A piston operated unloading
mechanism lifts the suction
valve plate to unload the
cylinders for reduced capacity
or unloaded starts.
• Simplifi ed unloading piston
allows easy removal for seal
servicing.
