Page 1
Installation & Maintenance Instructions MM-616 Series FS-5 ® General Purpose Liquid Flow Switch (specified models only) Series FS-5 OPERATION This control is an independently mounted water flow sensing device that makes or breaks an electrical circuit when flow stops or starts.
FLOW RATES Flow rates required to activate flow switch are shown Settings will vary when used to sense flow of other in chart below. The values are calculated for sensing fluids. water (potable, non-polluted) in a horizontal pipe. Flow Rates NOTE: DO NOT USE LIQUID FLOW Mode of Operation Max.
Page 4
SECTION 2 - Connecting the Flow Switch to Pipe ® a. Apply pipe sealing compound or Teflon tape to the pipe threads. NOTE: Do not apply sealant to first threads as this switch is grounded (earthed) via the pipe mounting. b.
STEP 3 - Electrical Installation WARNING • To prevent electrical shock, turn off the electrical power before making electrical connections. • To prevent an electrical fire or equipment damage, electrical wiring insulation must have a rating of 167˚F (75˚C) if the liquid’s temperature exceeds 180˚F (82˚C). •...
Page 6
c. Determine which switch action is required for the flow switch. • “Flow” means that the switch will close circuit C.-N.O. and open circuit C.-N.C. when flow rate is increased above setpoint of flow switch. • “No Flow” means that the switch will open circuit C.-N.O.
Page 7
STEP 4 - Testing a. Place cover on flow switch and turn on power. Initiate fluid flow through the system. Observe the device being activated by the flow switch to determine if device is operating as required. b. Turn off fluid flow to determine if device is operating as required.
MAINTENANCE TROUBLESHOOTING Problem: SCHEDULE: • Inspect annually. Turbulent or high flow 1. Flow Switch Does Not Operate velocity conditions may require more frequent Solution: inspection and/or replacement. a. Make sure power has been turned on to device and flow switch. b.
This manual is also suitable for:
Fs5-j-3-eFs5-j-4-eFs5-s-1Fs5-ds-1Fs5-d-3Fs5-d-4...
Show all