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Q. "What is the life expectancy of the relay?"
A. The electrical life expectancy of general purpose and power relays is generally rated to be 100,000 operations minimum, while mechanical life expectancy may be one million, 10, or even 100 million operations. The reason electrical life is rated so low compared with mechanical life is because contact life is application dependent. The electrical rating applies to contacts switching their rated loads. When a set of contacts switches a load of less than rated value, contact life may be significantly greater. For example, 25 amp, 240V AC, 80% P.F. contacts may be expected to switch such a 25 amp load in excess of 100,000 operations. If these contacts are used to switch, say, a 5 amp, 120V AC resistive load, however, life may be in excess of a million operations.
Q. "How far apart can the outdoor Hi-Lo sump controller 'sensors' be placed vertically apart from each other?"
A. The location of the sensors is only limited by the length cables (12ft), but other than that, the sensors have no other restrictions as to how close or how far apart they are placed vertically or horizontally. When water is above both the sensors then the pump will be off. When water is below both sensors the pump will be on.
Q. "Do you offer a pump switch that operates opposite of this outdoor Hi-Lo Sump Controller switch?"
A. We offer the Tank Level Controller switch which works opposite of the Hi-Lo Sump Controller switch. The purpose of the Tank Level Controller is to make sure your tank does not run dry. This item is designed to be off when both sensors are contacting water, and as soon as both sensors do not contact water, the pump turns on and fills the pit/tank until the water level reaches the top sensor.
Q. "We are very happy with this Outdoor Electronic Hi-Lo Pump Switch. But, is there something available in case we have an electrical power failure?"
A. We offer a water powered back up sump pump made by Zoeller and also one made by Liberty Pumps. We also offer some 12 volt battery operated sump pumps. The Little Giant battery backup Emergency Sump Pump System is very reliable and we have not heard of any problems with them. We also offer a Failed Circuit Alarm which will signal an alarm when a circuit has failed.
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