Xylem MM 616F User Manual

Series FS-5

®

General Purpose
Liquid Flow Switch

INSTRUCTION MANUAL

MM-616)

2

Motor Switch Rating (Amperes)

Voltage Full Load Locked Rotor Pilot Duty

120 VAC

7.4 44.4

125 VA at

240 VAC 3.7 22.2

120 or 240 VAC

50 or 60 cycles

Maximum Liquid Pressure: 150 psi (10.5 kg/cm2)

Liquid Temperature Range (T

L

): 32 - 250˚F (0 - 121˚C)

(All models except “S”)

32 - 225˚F (0 - 107˚C)

(“S” models)

Ambient Temperature Range (TS): 32 - 120˚F (0 - 49˚C)

Electr

ical Enclosure Rating: NEMA Type 1 (IP 21)

Maximum Velocity: 10ft/sec (3M/sec)

Pipe Connection Thread Size:

3

/4”

or 1”

NPT

(All models e

xcept

“J”)

3

/4” or 1” BSPT

(“J” models)

SPECIFICATIONS

ELECTRICAL RATINGS

FLOW RATES

Settings will vary when used to sense flow of other
fluids.

3

NOTE: DO NOT USE LIQUID FLO

W
SWITCHES ON SYSTEMS WITH
FLOW VELOCITY GREATER THAN
10 FEET (3M) PER SECOND.

INSTALLATION –

STEP 1 - Determine the Location of the Flow Switch

Fluid Flow

3/4" or 1"

PIPE

5 x D

MINIMUM

D

D= PIPE DIAMETER

5 x D

MINIMUM

• The flow switch

should be located in a horizontal

section of pipe

where there is a straight horizontal run

of at least 5 pipe diameters on each side of the flo

w

switch.

• The flow switch

must be installed in the upright

position

as shown with arrow mark on side of casting

in the same direction as fluid will flow.

• Some system conditions that require more than 5 pipe
diameters are high viscosity fluid and high fluid velocity.

• The flow switch should be installed in the pump suction
piping when spring-loaded check valves and/or other
close coupled accessories are installed in the pump
discharge piping.

Flow Rates

Pipe

Mode of Operation

Size NPT

Flow

No Flow

in. (mm) Settings gpm (lpm) gpm (lpm)

3

⁄4

(20)

Factor

y or

or Minimum 1.5 (5.7) 1.1

(4.2) 16.62 (63)

1 (25)

Maximum 15 (56.8) 10 (37.9) 27 (102)

Values are ± 10%

Max. Flow

Rate gpm
(lpm) w/o

Paddle Damage

Flow rates required to activate the flow switch
are shown in chart below.These values were

calculated using clean water in a horizontal pipe.

NOTE: THIS PRODUCT IS NOT INTENDED

FOR USE IN POTABLE WATER

APPLICATIONS.