Specifications

Arrow’s Exclusive
Spiral Fin Heat Exchanger
Arrow spiral fin tubing acts as a cold mechanical separator.
sThe fins create turbulent flow and rotate the moisture laden air as
it passes through the tubing. The turbulent flow and centrifugal
forces generated cause the moisture and fog to condense rapidly
and completely into water droplets. These droplets are trapped in
the grooves between the fins and are easily removed by a
mechanical separator.
. . .Versus Smooth Tube Heat Exchanger
By contrast, smooth tubing does not effectively tumble the air to
cause all the molecules to come into contact with the cold tubing.
Additionally, laminar flow does not permit effective condensation,
and much of the condensate leaves the tube in the form of fog. A
mechanical separator will not remove this fog and it is passed into
the air stream in the form of a much higher dew point.
Automatic Pump-Down System
Runs for a short period after dryer is shut down to pump
accumulated refrigerant from low pressure side of refrigerant
system. Standard on all larger units. This prevents liquid
refrigerant from migrating back to the compressor during shut-
down, which could cause any refrigerant compressor to fail.
Crankcase Heater
Standard on 1-1/2 hp. and larger units. Keeps liquid
refrigerant from contaminating compressor lubricating
oil by heating refrigerant above evaporation point.
Further protection for your system.
New! Braze Plate Design
New Arrow brazed plate heat exchangers in our “F-Series” dryers, Models F-10/20 thru
F-150, provide turbulent flow, high heat transfer coefficients, lower pressure drops, in a
compact size. These heat exchangers are made up of corrugated “herringbone” patterned AISI
316 type stainless steel channel plates. These plates are brazed together by using 99.9% pure
copper, at all contact points and creates a completely hermetically sealed unit.. They are helium
leak tested for internal and external leaks down to a volumetric equivalent to less than
2.8 grams of R-22 refrigerant per year. Arrow Pneumatics has incorporated this design in the
new “F-Series” line of dryers. Our goals are to provide you with quality products adding higher
efficiencies, reduced cabinet sizes, simplified installations and lower shipping costs
Semi-Hermetic Compressor
Semi-hermetic compressors are standard on 500 CFM to 2,500
CFM “C” series cycling dryers, as well as all units 3,000 cfm and
above. These refrigerant compressors are more efficient and have a
longer life than hermetic compressors.
They provide substantial energy
savings at less than full-load
conditions.
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