Omega Engineering PSW490B User Manual Download Page 7

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 

13 months

from date of purchase. OMEGA’s Warranty adds an additional one (1) month grace

period to the normal 

one (1) year product warranty

to cover handling and shipping time. This

ensures that OMEGA’s customers receive maximum coverage on each product. 

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits, 
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of 
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components which wear are not warranted, including but not 
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA
neither assumes responsibility for any omissions or errors nor assumes liability for any damages
that result from the use of its products in accordance with information provided by OMEGA, either
verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and
free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND
WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES
INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUR-
POSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth
herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on
contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the
purchase price of the component upon which liability is based. In no event shall OMEGA be liable
for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/ DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.

RETURN REQUESTS / INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on
any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit. 

FOR 

WARRANTY

RETURNS, please have the 

following information available BEFORE 
contacting OMEGA:
1. Purchase Order number under which the product

was PURCHASED,

2. Model and serial number of the product under

warranty, and

3. Repair instructions and/or specific problems 

relative to the product.

FOR 

NON-WARRANTY

REPAIRS, consult OMEGA

for current repair charges. Have the following
information available BEFORE contacting OMEGA:
1.  Purchase Order number to cover the COST 

of the repair,

2. Model and serial number of the product, and
3. Repair instructions and/or specific problems 

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords
our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.

© Copyright 1999 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC.

MADE IN

Summary of Contents for PSW490B

Page 1: ...www omega com e mail info omega com omega comTM User sGuide DSW490B and DSW790B Pressure Control Switches ...

Page 2: ...es TEL 33 0 130 621400 FAX 33 0 130 699120 Toll Free in France 0800 4 06342 e mail france omega com Germany Austria Daimlerstrasse 26 D 75392 Deckenpfronn Germany TEL 49 0 7056 3017 FAX 49 0 7056 8540 Toll Free in Germany 0800 TC OMEGASM e mail germany omega com United Kingdom One Omega Drive River Bend Technology Centre ISO 9002 Certified Northbank Irlam Manchester M44 5EX United Kingdom TEL 44 0...

Page 3: ...It is recommended that Teflon tape or other sealant be used on conduit bushing or plug threads to ensure integrity of the enclosure INSTALLATION AND MAINTENANCE OF THE DSW490B AND DSW490B SERIES OMEGA SNAP ACTION SWITCHES FOR DIFFERENTIAL PRESSURE CONTROL DSW490 series standard one 3 4 NPT conduit hole right side DSW790 series standard two 3 4 NPT conduit holes with one permanent plug NEMA 7 9 enc...

Page 4: ...e low side pressure at 300 psi Raise the high side pressure to 450 psi to obtain 150 psi differential Turn the adjustment nut until the switch changes mode at 150 psi differential When the setpoint has been achieved raise and lower the high side pressure to ensure that the differential setpoint is correct After installation of the control replace cover to insure electrical safety and to protect in...

Page 5: ...EMALE 3 4 NPT 2 PLACES B A 1 4 NPT FEMALE C A U T I O N T O PREVENT IGNITION OF H A ZA R D O U S ATMOSPHERE TURN OFF P O W E R B E FORE OPENING CLOS E T I G H T L Y BEFORE OPERATIN G C A U T I O N C O U P E R LE COU R AN T A V A N T D O U V R I R B I E N F E R M E R AV A N T D E M E T T R E E N S E R V IC E B A C H D E F G 0 28 THRU 3 PLACES 3 4 NPT 2 PLACES 1 4 NPT LOW PRESSURE INLET 1 4 NPT HIGH...

Page 6: ......

Page 7: ...hall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any...

Page 8: ...icators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial pH Conductivity Equipment DATA ACQUISITION Data Acquisition Engineering Software Communications Based Acquisition Systems Plug in Cards for Apple IBM Compatibles Datalogging Systems Recorders Printers Plott...

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