Omega dimensions PSW-180 TEFLON SERIES, Part I - Installation, Part II - Adjustments, General

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

GENERAL

PSW-180 Teflon® differential pressure switch utilizes a diaphragm sensor to monitor pressure changes. The switch utilizes dual diaphragm sensors to monitor the difference in pressure between two sources. PFA Teflon® wetted ports insure corrosion resistance in highly corrosive applications and is well suited for high purity applications.

Part I - Installation

Tools Needed

Applicable Screwdriver Flaretek® tubing cutter 213-14 or equal Flaretek® flaring tool 213-58 or equal Flaretek® tools may be ordered from Flouroware, Inc., Phone (612) 448 - 3131

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 in-lbs.

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
Flat blade screwdriver
Use screwdriver to turn external adjusting screw
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

Flaretek® is a registered trademark of Fluoroware, Inc.