
IMPSW180T
PSW-180 TEFLON SERIES
Differential Pressure Switches
I N S T R U C T I O N | M3569/0500 | |
S H E E T | ||
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GENERAL
Part I - Installation
Tools Needed
Applicable Screwdriver Flaretek® tubing cutter
MOUNTING
LOCATE SWITCH WHERE VIBRATION, SHOCK, AND AMBIENT TEMPERATURE FLUCTUATIONS ARE MINIMAL.
The control can be mounted in any position. Locate where ambient temperature is above 30°F and below 160°F.
Surface Mounting
Insert two #6 screws through mounting ear holes on 2” centers (recommended mounting for maximum vibration resistance). Follow directions for making pressure connection.
Making Pressure Connection
Use proper tools and prepare tubing per manufacturers recommendations. Cut tubing. Slip nut over tubing. Flare tubing. Press tubing onto pressure connection, making certain tubing is seated on pressure connection shoulder. Tighten nut, hand tight, onto pressure connection (see Figure 1).
Minimum torque requirement for 1⁄4” nut is 5 inch • pounds (0.57 Newton • Meters). Be sure to connect high pressure source to port labeled “HIGH.” Connect low pressure source to “LOW.”
NEVER TIGHTEN BY TURNING THE CONTROL INTO THE FITTING.
DO NOT USE A WRENCH. FITTING MUST BE HAND TIGHTENED ONLY, OVER TIGHTENING MAY DAMAGE THE PORT.
WIRING
ALL LIVE SUPPLY CIRCUITS MUST BE DISCONNECTED BEFORE WIRING THE CONTROL. CONNECT THE CONDUIT TO THE HOLE IN ACCORDANCE WITH NATIONAL AND LOCAL CODES. MAXIMUM RECOMMENDED
WIRE SIZE IS 16 AWG.
Unscrew terminal just enough to put stripped wire under terminal block clamp. Nominal torque value for terminal block screws is 9.0
Conduit hub is to be connected to conduit before conduit is connected to enclosure.
switch using the actual working pressures encountered in the application.
Dimensions
All dimensions are stated in inches unless noted.
Pipe Mounting
Mount unit from its port(s). Follow directions for making pressure connection.
Figure 1
Part II - Adjustments
Tools Needed |
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Flat blade screwdriver |
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Use screwdriver to turn external adjusting screw |
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on the side. Turn “in” (clockwise) to increase | Teflon® is a registered trademark of E.I. Dupont Company | |
pressure setting. For best setting accuracy, set the | ||
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Flaretek® is a registered trademark of Fluoroware, Inc.