RD Series refrigerated compressed air driers remove problem-causing moisture from indoor air lines while offering the advantages of maximum dew point performance, low pressure drops, and no heat exchanger freeze-ups with low loads, states the company. Models under 40 scfm include a built-in mechanical drain. Models 40 scfm and larger include a refrigerant analyzer gauge, an electronic drain, and a drain control panel with drain open light and open/cycle time adjustments. On 80 scfm and larger models, additional features include a high evaporator temperature light and a high/low refrigerant pressure shutdown.
Van Air Systems, Inc., 2950 Mechanic St., Lake City, PA 16423-2095; 800-840-9906; 800-826-2471 (fax); www.vanairsystems.com (website).