Fs251 Flow Switch Manual

Maximum liquid pressure 160 psi 11 3 kg cm2 liquid temperature range t l.

Fs251 flow switch manual.

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. Nema 1 ip 21 fs254. Nema 4 ip 56. 32 120 f 0 49 c electrical enclosure rating fs251.

Insert the flow switch into the pipe tee. 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. 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. 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. 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. 518 95 120100 mcdonnell. Mcdonnell miller fs6 instruction manual this mcdonnell miller flow swicth is for heavy duty applications.

Final position is with arrow on body aligned in the liquid flow direction. 120100 mcdonnell miller fs7 4e 1 1 4 flow switch. Features and benefits universal design serves the widest variety of applications for starting or stoppingread more. 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. Do not use liquid flow switches on systems with flow velocity greater than 10 feet 3m per second. Mcdonnell miller fs251 general purpose flow switch with nema 1 enclosure 120611 replaces fs4 3. Instruction manual mm 601k series fs4 3 general purpose liquid flow switch 246796 pipe flow no flow size npt maximum maximum in.

Turn the flow switch two 2 or three 3 revolutions clockwise until tight. 32 250 f 0 121 c ambient temperature range t s. Fs251 model part weight number description lbs. Mm adjustment adjustment 2 50 69 2 50 3.

Place a 1 3 8 open end wrench on the hex floats of the flow switch body to tighten to final position. 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.