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HIGH-TEMPERATURE LIMIT SWITCH
heater components air flow switch

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 LOW-OIL FLOAT SWITCH The low-oil float switch is wired into the heater control circuit to prevent operation of the burner if the oil in the expansion tank reaches a dangerously low level.  Operation of the burner in a low-oil situation will cause overheating and burnout of the heater coiling.  The unit is factory lubricated to insure a lifetime of trouble-free service.  Never use lubricants on the pivot sockets as unnecessary additions will cause malfunctions.  If the mercury tube ever appears cloudy or cracked, it should be replaced. page 3 - 1158







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