Instruction/ maintenance manual of the product D-10,000 AT&T
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107 W. Main Street Worthington, PA 16262 Phone: 724.297.3416 Fax: 724.297.5189 h t t p :/ / www.a ir ta k. c o m OPERATING INSTRUCTIONS Refrigerated Air Dryers Models D-320 through D-10,000 4-2002.
2 Contents A. INTRODUCTION B. RECEIVING C. LOCATION D. FOUNDATION E. PIPING F. ELECTRICAL G. COMPRESSED AIR CIRCUIT 1. Air to Air Heat Exchanger 2. Air to Refrigerant Heat Exchanger (Evaporator) 3. Drain Traps H. REFRIGERANT CIRCUIT 1. Refrigerant Compressor 2.
3 A. INTRODUCTION AIR/TAK Refrigerated Compressed Air Dryers are of the hi gh-efficiency type, designed to effectively remove moisture from compressed air by means of a refrigerat ion process. The compressed air pressure dewpoint is reduced to 38°F and then reheated to prevent in-plant air lines from sweating.
4 In keeping with good compressed air piping design, the air dryer should be installed on the downstream side of the air receiver and aftercooler. An AIR/TAK prefilter(s) for oil and dirt removal in stalled at the inlet of the dryer is recommended.
5 G. COMPRESSED AIR CIRCUIT 1. Air-to-Air Heat Exchanger: This unique high-efficiency heat exchanger is of a finned shell and tube design. The tubes are of high quality copper and are enhanced by outer fins of corrugated aluminum .
6 The circuiting within the evaporator is serpent ined in such a manner as to guarantee a completely flooded evaporator. Each evaporator is designed to insure adequat e refrigerant velocity to eliminate the problem of oil return to the crankcase. 4. Expansion Valves: The thermostatic expansion valve (TXV) is used on Model D-320-A, and larger.
7 10. Oil Sightglass: The oil sightglass is found on the side of the cr ankcase on accessible scroll compressors to provide a visual means of checking the oil level. The oil must be checked only while the compressor is in operation. During compressor operation the oil sight glass should be approximately 1/2 full.
8 I. START-UP After the installation of your air dryer at a su itable location, the following checks should be made: a) Bypass piping installed and valves set to bypass the dryer.
9 J. DESIGN CONDITIONS Each dryer is shipped complete and ready for installation. Every dryer is tested and preset at the factory for optimum service at the design conditions. The following ar e the standard design conditions for a refrigerated dryer operating at 60 HZ: 38°F (3.
10 Cooling Water Requirements MODEL # HEAT TO COOLING WATER KW INPUT (4) COOLING WATER AMBIENT (1) GPM (2) GPM (3) D-400-W 23682 1780 4.7 1.9 1.95 D-500-W 33894 2550 6.8 2.7 2.6 D-600-W 37250 3650 7.5 3.0 2.92 D-800-W 52859 3980 10.6 4.3 4.22 D-1000-W 66150 5360 13.
11 SYMPTOMS PROBABLE CAUSE REMEDY Dryer not running. a. Disconnect open. a. Close disconnect. High temperature light off, analyzer gauge normal. b. Fuse blown. b. Replace fuse. c. Wiring, improper or broken. c. Check wiring diagram or repair. d. Control transformer d.
12 SYMPTOMS PROBABLE CAUSE REMEDY g. Defective refrigerant g. Repair or replace compressor valves. compressor. h. Suction pressure too high. h. Adjust hot gas bypass valve. Dryer running. a. Leaky refrigerant circuitry. a. Locate and repair. High temperature light on, analyzer gauge pressure low.
13 High pressure drop across a. Excess flow. a. Dryer undersized. dryer inlet and outlet. Replace with larger dryer. b. Low air pressure. b. Dryer undersized. Replace with larger dryer. c. Partially frozen. c. Shut dryer off until ice melts. Power light “ON” but dryer a.
An important point after buying a device AT&T D-10,000 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought AT&T D-10,000 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data AT&T D-10,000 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, AT&T D-10,000 you will learn all the available features of the product, as well as information on its operation. The information that you get AT&T D-10,000 will certainly help you make a decision on the purchase.
If you already are a holder of AT&T D-10,000, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime AT&T D-10,000.
However, one of the most important roles played by the user manual is to help in solving problems with AT&T D-10,000. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device AT&T D-10,000 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
