Groco # AS-100 Bilge Pump Switch
Product Information :
Parts Page (click here)The Groco AS-100 is a Bilge Pump Switch with replacement pump end only without a Motor. This switch turns a bilge pump off and on by sensing changes in pressure, caused by rising or falling bilge water level, in its air tube. No floats to stick or fill with water. Switch operation range pproximate levels are ON at 2-3/4 inches of bilge level and OFF at 1 inch. For use with a pump that draws up to 10-amps running continuously or up to 20-amps running intermittently. Locate the pressure switch as high and dry as possible. The switch is not waterproof, so a submerged switch and/or electrical connections will cause switch failure. Water damage to the switch voids product warranty.
Features :
Applications
The AS100 uses the simple and reliable pressure fluctuation from a rising or falling bilge water level to turn your bilge pump on and off automatically. There are no floats to stick in the up position to allow your bilge pump to run continuously, or to crack and fill with water so they fail to turn your bilge pump on at all. To install, temporarily place the black neoprene air bell about one foot away from the bilge pump, at a level approximately one inch above the level of the base of the pump. The air bell may be placed on top of a block of wood to achieve the desired level. Secure the air bell only after verifying proper operation. Connect the switch to the air bell with the clear tubing supplied. The fit will be tight, so no clamps or adhesives are required. ensure that there are no sags or sharp bends in the hose.Fasten the switch securely to a sturdy surface with 10 stainless steel screws not supplied. The maximum continuous pump current is 15 amps at 12 vdc. To verify that the switch is properly controlling the pump, flood the bilge with several inches of dockside water. Slowly lower the air bell into the water and the switch should trigger pump operation when the air bell is approximately 23/4 inches deep. Allow the pump to run while you lower the air bell to the bilge floor and the pump should turn off when the level of water in the bilge is approximately 1 inches deep. Experiment with air bell locations until the pump operates as you wish. Do not locate the air bell below the level of the pump as this will allow the pump to run continuously even though the pump has evacuated as much water as it is capable of.