POTTER IFS Series Industrial Flow Switch Owner’s Manual

IFS/IFSS SERIES
INDUSTRIAL FLOW SWITCH

IFS Series Industrial Flow Switch

IFS-1 Stock No. 9000001 (CE Marked)
IFS-2 Stock No. 9000002 (CE Marked)
IFS-HC-1 Stock No. 9000003
IFS-HC-2 Stock No. 9000004
IFSS-1 Stock No. 9000310 (CE Marked)
IFSS-2 Stock No. 9000311 (CE Marked)
IFSS-HC-1 Stock No. 9000312
IFSS-HC-2 Stock No. 9000313
CAUTION
This switch can serve as a way to start and stop electrically operated equipment
General
The Model IFS is a flow switch used in liquid flow lines carrying water or any fluid not harmful to brass, stainless steel, or EPDM and not classified as a hazardous fluid.
when a flow or no flow condition occurs in a variety of applications.This device is designed for use only as an operating control. Where an operating control failure would result in personal injury and/or loss of property, it is the responsibility of the installer to add devices (safety, limit controls) that protect against, or systems (alarm, supervisory
systems) that warn of control failure. This device is not intended for applications in explosive environments.
Listings/Approvals:

• UL Guide (NKPZ) for industrial control equipment per UL Standard 508 Industrial
• UL Guide (MFHX) for heating/cooling appliance switch per UL Standard 353 Limit Controls
• CSA Class (321106) for industrial control equipment per CSA Standard C22.2 No. 14-M Industrial Control Equipment

Maximum Service Pressure: 250 PSI
Enclosure: NEMA Type 1 (For indoor use only) Formed sheet metal with powdercoat finish. (Not for use in hazardous locations.)
IFS Contacts:
IFS-1 / IFSS-1: One SPDT (Form C) switch
IFS-2 / IFSS-2: Two sets of SPDT (Form C) switches to provide versatility in wiring two separate circuits.
15 Amps at 125/250VAC  .5 Amps at 125VDC  .25 Amps at 250VDC

IFS-HC Contacts:
IFS-HC-1 / IFSS-HC-1: One SPDT (Form C) switch
IFS-HC-2 / IFSS-HC-2: Two sets of SPDT (Form C) switches to provide versatility in wiring two separate circuits. 22 Amps at 125/250VAC

Ambient Temperature Range: 32°F/176°F (0°C/80°C)
Media Temperature Range: 32°F/250°F (0°C/121°C)
IFS / IFS-HC Pipe Connection: 1 in. NPT Brass
IFSS / IFSS-HC Pipe Connection: 1 in. NPT 316 Stainless Steel Conduit Entrance: Two openings for 1/2″ conduit Usage: For pipe sizes 1″ – 8″
Note: Model IFS-WP available with NEMA 4 enclosure for outdoor use. (See bulletin no. 5401041).

Mounting And Installation

The Model IFS may be mounted in a horizontal pipe line or a vertical pipe line with upward liquid flow. It is not recommended for installations where flow is downward. When mounted in a horizontal pipe line the switch will trip at a lower flow rate than shown in Fig. 7.
Mount the device in a section of pipe where there is a straight run of at least 5 pipe diameters on each side of the flow switch. Do not locate adjacent to valves, elbows or orifices. The switch should be mounted so the terminals or wire leads are easily accessible for wiring.
IFS models with flexible paddles are furnished with 4 paddles. Rigid paddle models are furnished with 2 paddles. For pipe sizes 1″,2″,3″,6″,or 8″, use the paddles provided. Intermediate sizes may be trimmed from the appropriate paddle using the paddle template in Fig. 5. The paddle must not touch the inside of the pipe or bind in any way. Paddles smaller than the actual pipe size should be used for added support and higher sensitivity. See Fig. 3. The paddles must be properly attached and the screw that holds the paddle must be securely tightened.
For a 1″ pipe application mount in a standard 1″ x 1″ x 1″ tee. Use a reducing tee for larger sizes of pipe to keep flow switch close to pipe and provide adequate paddle length in the flow stream.
Example: Use a 2″ x 2″ x 1″ tee for 2″ pipe. A weldolet may also be used. Screw the device into the tee fitting as shown in Fig. 4. The flat of the paddle must be at a right angle to the flow. The arrow on the side of the bushing must point in the direction of flow.
Note: Turn screw clockwise to increase the flow rate required to activate the switch. Turn screw counterclockwise to decrease the flow rate required to activate the switch.

Fig. 3
Typical paddle arrangement for 6″ to 8″ pipe.

Fig. 4

CAUTION
Screw the device into the TEE fitting as shown. Care must be taken to properly orient the device for the direction of the flow. Do not tighten by grasping the switch enclosure. Use the wrenching flats on the bushing only. Turning radius required for mounting the IFS is 3″.
Fig. 5
Use drawing as a template and trim at the dotted arc when trimming the appropriate paddle for intermediate pipe sizes.
CAUTION
The paddle must not touch the inside of the pipe or bind in any way.

Wiring
Use properly rated temperature supply wire for the anticipated service temperature.
Make all electrical connections in accordance with the National Electrical Code and local regulations.
See Figs. 6A and 6B for diagrams illustrating switch action.
Adjustment
Remove switch cover and turn the sensitivity adjusting screw clockwise to increase the flow rate required to actuate the switch. Turn the sensitivity adjusting screw counter-clockwise to decrease the flow rate required to actuate the switch. (See Fig. 1.) Be sure to replace the cover upon completion of the installation and adjustment.
CAUTION
Check the installation for “no-flow” switch operation. Make appropriate adjustments to the sensitivity adjustment screw to be sure the switch restores fully at the desired flow rate.
Fig. 6A
IFS-1/IFS-2 Switch Information

Fig. 6B
IFS-HC-1/IFS-HC-2 Switch Information

Fig. 7

Typical Flow Rates-GPM Required to Actuate Switch (For Vertical Pipe Installations)

Pipe Size (Inches)| 1| 11/4| 11/2| 2| 21/2| 3| 4| 5| 6| 8
Minimum Adjustment| Flow Increase| 5.| 5.| 6| 8.| 14.| 18| 35| 50| 70| 210
Flow Decrease| 4.| 4.| 5| 6.| 10.| 13| 25| 40| 60| 190
Maximum Adjustment| Flow Increase| 10.| 10| 14.| 20| 29| 50| 70| 120| 180| 410
Flow Decrease| 7| 9.| 11.| 19.| 26| 45| 65| 105| 160| 380

Notes:

1. Typical flow rates for 1″ to 1 1/2″ pipe sizes are averages which may vary approximately ±1 GPM with the use of a bronze reducing tee.
2. Typical flow rates for 2″ to 8″ pipe sizes are averages which may vary ±10% with the use of a 1″ weldolet.
   (*) Flow rates for these sizes are calculated.

PrINTeD IN USA
MFG. #5401022 – rev P-1 6/10
Potter Electric Signal Company, LLC • St. Louis, MO
Cust Service: 866-572-3005
Tech Support: 866-956-0988 • Canada 888-882-1833
www.pottersignal.com
firealarmresources.com

Documents / Resources

| POTTER IFS Series Industrial Flow Switch [pdf] Owner's Manual
IFS Series Industrial Flow Switch, IFS Series, Industrial Flow Switch, Flow Switch
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References

• Fire Alarm Resources | Download fire alarm documents
• Potter Electric: Fire Alarms & Fire Sprinkler Systems

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