Emerson 450XL Air Compressor User Manual


 
450XL Cross Section
2
The versatile VMC 450XL is now even better!
While retaining all of the features that are exclusive to Vilter com-
pressors, we’ve made several design improvements:
• Piston
Connecting road and bearing insert
• Crankshaft
• Safety head
Capacity reduction system
Even though we’ve made these specifi c changes, we’ve retained
all of the exclusive Vilter features, including provisions for fast and
easy servicing with components that are easy to access.
The 450XL can operate with ammonia, halocarbon and even some
hydrocarbon refrigerants. It works in extreme applications with up
to a 17,2 bar pressure differential. It can be belt-driven up to 224
kW or direct driven all the way up to 285 kW. And it can run at high
compression ratios all the way up to 12:1 with certain halocarbon
refrigerants.
Spring Loaded Safety Heads
Protect against liquid slugging by relieving internal
cylinder pressure if cylinders are subjected to an
incompressible fl uid.
Suction and Discharge Porting
Maximum suction and discharge porting through the
compressor achieves minimum pressure drop with
valve plates that are made to exacting Vilter material
and manufacturing requirements for long-term
service.
Piston and Connecting Rod
The unique design of the piston and connecting rod
assembly allows for movement only between the con-
necting rod bushing and piston pin, while providing
positive lubrication throughout the entire compres-
sion cycle.
Double Tapered Roller Bearings
Energy-effi cient roller bearings enable the compressor
to be used for high suction pressure applications as
well as high belt-drive horsepower requirements.
Tri-Micro® Oil Filter
Removes 95% of contaminants as small as 3 microns
in size. Allows full fl ow of oil at all times, resulting in
reduced wear on compressor components. Combines
extreme fi ltering capacity with the convenience of a
throw-away recharge element. Filter is enclosed in a
seamless drawn carbon steel shell with cast iron cover,
and is equipped with a means for determining pres-
sure drop across the fi lter.