Install Instructions
Air Dryers—A-4400 Series Technical Bulletin 3
Introduction
The A-4400 Series Refrigerated Air Dryers are designed for continuous
operation to supply dry air to pneumatic control systems. All components
are selected and assembled to provide dependable service over a long
period of time with a minimum amount of maintenance.
Note: For units without a factory mounted Air Purification System
(consisting of a coalescing oil removal filter with integral
pressure drop indicator, packed column type activated carbon oil
vapor removal filter, service bypass valve, pressure reducing valve,
safety relief valve, and power on/fail lamp), a properly configured
system must include a coalescing oil removal filter as well as an
activated carbon oil vapor removal filter as outlined in Product
Data A-4000 and the Installation and Service Manual for
PureFlow™ Air Compressors (Publication No. 2629).
Table 1: Ordering Data
Code
Number
Flow Capacity at
Rated Condition*
scfm
(L/s)
Air
Purification
System
Shipping
Weight
lb**
A-4412-1
12
(5.7)
Yes
72
A-4412-2
12
(5.7)
No
67
A-4417-1
17
(8.0)
Yes
78
A-4417-2
17
(8.0)
No
73
A-4423-1
23
(10.9)
Yes
78
A-4423-2
23
(10.9)
No
72
* The rated condition is 20 psig (140 kPa) supply pressure, 100F (38C)
saturated inlet air temperature, 100F ambient temperature, and 80 psig
(560 kPa) inlet pressure.
** lb x 0.454 = kg.
Product
Overview