Fs251 Flow Switch Manual

32 250 f 0 121 c ambient temperature range t s. Fs251 aluminized steel fs254 aluminum housing cover fs251 polycarbonate fs254 aluminum ratings fs251 nema 1 fs254 nema 4 maximum operating pressure 160 psig 11 0 bar maximum temperature 250 f 121 c motor switch rating amperes voltage full load locked rotor pilot duty 120vac 7 4 44 4 125 va at 120 or 240 vac 240 vac 3 7 22 2 50 or 60 cycles. Fs251 model part weight number description lbs.

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Fs251 flow switch manual.

General purpose liquid flow switches the series fs250 fs251 nema1 version and fs254 nema4 version. Final position is with arrow on body aligned in the liquid flow direction. 518 95 120100 mcdonnell. Features and benefits universal design serves the widest variety of applications for starting or stoppingread more.

32 120 f 0 49 c electrical enclosure rating fs251. Insert the flow switch into the pipe tee. Kg fs251 120611 fs251 general purpose 1 9 flow switch nema 1 0 9 fs254 120610 fs254 general purpose 1 9 flow switch nema 4 0 9 ordering information mcdonnell miller bulletin mm 626. Place a 1 3 8 open end wrench on the hex floats of the flow switch body to tighten to final position.

Instruction manual mm 601k series fs4 3 general purpose liquid flow switch 246796 pipe flow no flow size npt maximum maximum in. 120100 mcdonnell miller fs7 4e 1 1 4 flow switch. Nema 1 ip 21 fs254. Mcdonnell miller fs6 instruction manual this mcdonnell miller flow swicth is for heavy duty applications.

Mm adjustment adjustment 2 50 69 2 50 3. Do not use liquid flow switches on systems with flow velocity greater than 10 feet 3m per second. Do not put excessive force on cover when turning. Position of the flow switch installing the flow switch in a horizontal run of pipe is recommended.

Features and benefits universal design serves the widest variety of applications for starting or stopping electrically operated equipment such as signal lights alarms motors automatic burners metering devices and others replacement for common flow switches from johnson penn potter taco watts hydrolevel and other manufacturers 1 npt two electrical knock outs allows connection from. Mcdonnell miller 120611 fs251 general purpose flow switch w nema 1 enclosure universal design serves the widest variety of applications for starting or stopping electrically operated equipment such as signal lights alarms motors automatic burners metering devices and others. Nema 4 ip 56. Replacement for common flow switches from johnson penn potter taco watts hydrolevel and other.

However because of space limitations the only available installation may be in a vertical section of pipe. Maximum liquid pressure 160 psi 11 3 kg cm2 liquid temperature range t l. If the flow switch will be used to actuate a signal alarm or other device when. These flow switches incorporate key changes to address customer expressed needs of greater reliability and lower flow sensing capabilities in a general purpose flow switch.

Turn the flow switch two 2 or three 3 revolutions clockwise until tight. The series fs4 3 fs8 w and fs5 may be used in this situation as they will generally operate satisfactorily when installed in a vertical pipe.