POTTER IFS-WP 1 and 2-IFSS-WP 1 and 2 Industrial Flow Switch Instructions
- June 9, 2024
- POTTER
Table of Contents
POTTER IFS-WP 1 and 2-IFSS-WP 1 and 2 Industrial Flow Switch
General
The Model IFS-WP 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. This switch can serve as a way to start and stop electrically operated equipment 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.
Specification
Listings/Approvals:
- UL Guide (NKPZ) for industrial control equipment per UL Standard 508 Industrial Control Equipment
- 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
- CE Marked
- Maximum Service Pressure: 250 PSI
- Enclosure: Die-cast grey powdercoat finish on cover.
- Contacts:
- IFS-WP1 / IFSS-WP1: One SPDT (Form C) switch
- IFS-WP2 / IFSS-WP2: 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
- Motor Ratings : 120VAC 240VAC
- Horsepower : 1/8 1/4
- AC F.L.A. : 3.8 AC L.R.A. : 22.8
- Pilot Duty Rating : 125VA 120/240VAC
- Environmental Specifications:
- Suitable for indoor or outdoor use with factory installed gasket and die-cast housing.
- NEMA 4 Rated Enclosure – use with appropriate conduit fitting.
- Ambient Temperature Range: 32°F to 176°F (0°C to 80°C)
- Media Temperature Range: 32°F to 250°F (0°C to 121°C)
- IFS-WP1 / IFS-WP2 Pipe Connection: 1 in. NPT Brass
- IFSS-WP1 / IFSS-WP2 Pipe Connection: 1 in. NPT 316 Stainless Steel
- Conduit Entrance: One opening for 1/2″ conduit
- Usage: For pipe sizes 1″ – 8″
- Caution: This device is not intended for applications in explosive
Mounting And Installation
The Model IFS-WP may be mounted in a horizontal pipe line or a verti-cal pipe
line with upward liquid flow. It is not recommended for installa-tions where
flow is downward. When mounted in a horizontal pipe line the switch will trip
at a lower flow rate than shown in Fig. 6. 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. 3. 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. 2. 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.
Dimension
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-WP is 3.188″.
Use the 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 Fig. 6 for diagram 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.
SPECIFICATIONS
SPECIFICATIONS
Typical Flow Rates-GPM Required to Actuate Switch (For vertical pipe
installations)
Pipe Size (inches)| 1| 1 1/4| 1 1/2| 2| 2 1/2|
3| 4| *5| 6*| 8**
Minimum Adjustment
| Flow Increase| ****
4.5
| ****
4.5
| ****
6.0
| ****
7.5
| ****
13.5
| ****
18
| ****
35
| ****
50
| ****
70
| ****
210
Flow Decrease| ****
3.5
| ****
3.5
| ****
5.0
| ****
5.5
| ****
9.5
| ****
13
| ****
25
| ****
40
| ****
60
| ****
190
Maximum Adjustment
| Flow Increase| ****
9.5
| ****
10.0
| ****
13.5
| ****
20.0
| ****
29.0
| ****
50
| ****
70
| ****
120
| ****
180
| ****
410
Flow Decrease| ****
7.0
| ****
8.5
| ****
10.5
| ****
18.5
| ****
26.0
| ****
45
| ****
65
| ****
105
| ****
160
| ****
380
NOTES:
- 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.
- 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.
References
- Fire Alarm Resources | Download fire alarm documents
- Potter Electric: Fire Alarms & Fire Sprinkler Systems