Auto Drain AC Model # 091-9-089 The Auto Drain system automatically drains the moisture from the seperator each time the compressor shuts down. The Auto Drain Assures that the filter bowl is always drained and does this without the intervention by maintenance personnel. Mounting Plate Model # 091-9H-1 Developed to provide a soft mount for the Auto Pump to reduce vibration and for simplified mounting. Instruction Sheet (.pdf file, 24 KB)