Great Lakes Air Products ERF SERIES Benutzerhandbuch - Seite 4

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RECOMENDED SYSTEM DESIGN
A healthy and long-term trouble free compressed air supply design should be approached as a complete
system, not individual components.
The air compressor Intake location is vital to the system health. Locate it to supply clean fresh air that is
free from possible containments (e.g. ammonia). Any containment entering the compressor intake will be
concentrated by a factor of 8X in a typical compressed air system.
A properly sized and maintained compressed air aftercooler is vital to maintaining an acceptable system
temperature range. ERF Series refrigerated air dryers are designed to operate at rated flow with a
maximum inlet temperature of 100°F (37.7°C). Units can be oversized to accommodate higher inlet
temperatures up to 120°F (48.8°C).
As dryer inlet temperatures rise above the design 100°F (37.7°C), the moisture holding capacity of the air
rises dramatically. The following table represents the additional load at elevated temperatures.
Temperatures
Additional Load
The pipe connection to the dryer should match the standard connection ports provided. The chart below
is provided as a basic guide to size branch and header piping. It is recommended that shut-off valves
with unions be installed at each port, with a valve bypass to permit isolation of the unit for servicing
without interruption of plant air supply.
Pipe Size
½"
Flow (SCFM)
40

CONDENSATE DRAIN

The condensate system is at line pressure and can cause personal injury or equipment
damage when discharging. Securely anchor the drain tube prior to dryer operation.
This refrigerated dryer comes standard with an electronic timer solenoid condensate drain system. The
drain timer is factory preset to 4 seconds of "on time" and 10 minutes of "off time". This factory setting is
applicable for virtually all-industrial applications. If adjustment is required contact the Accessory Service
Department for alternate settings and procedure.
Condensate discharged from the dryer may contain oil/lubricants. Verify and follow local regulations
regarding disposal.
Great Lakes Air Products ERF Series Refrigeration Dryers
Effective for equipment manufactured 01/01/2010
100°F
105°F
(37.7°C)
(40.5°C)
0%
15%
Maximum Recommended Compressed Air flow
¾"
1"
1¼"
100
150
200
Schedule 40 pipe @ 95 to 115 PSIG
Page 4 of 8
110°F
115°F
(43.3°C)
(46.1°C)
32%
51%
1½"
2"
2½
3"
350
650
900
1500
120°F
(48.8°C)
75%
4"
6"
2500
5000