F This is an ON/OFF switch detecting low levels of the circulating fluid. When the fluid volume is 1 L/min. or less, “ERR16” is displayed and the Thermo-con stops. This switch is installed between the circulating fluid inlet and the tank, and built into the Thermo-con. Refer to page 1381. HEC001-W5�ｭ-F HEC003-W5�ｭ-F Watercooled Type Applicable model NPT Thread Option symbol The connection parts of circulating fluid piping, facility water piping and circulating fluid drain port are NPT thread type. N HEC N NPT thread Watercooled HEC001-W5�ｭ-N HEC003-W5�ｭ-N HEC006-W2�ｭ-N HEC012-W2�ｭ-N Type Applicable model With Level Switch Option symbol This switch is used to detect a LOW level of tank fluid. When the fluid level becomes below the LOW level, “ERR20” is displayed and the Thermo-con stops. This switch is installed in the circulating fluid tank and built into the Thermo-con. Refer to page 1381. L HEC L With level switch Watercooled HEC001-W5�ｭ-L HEC003-W5�ｭ-L Type Applicable model Other models include a level switch as standard equipment. Note) Options have to be selected when ordering the Thermo-con. It is not possible to add them after purchasing the unit. Series HEC-W Options With Flow Switch Option symbol HEC F With flow switch 1409 HRG HRS HRZ HRZD HRW HEC HEB HED HEA IDH