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SD73 

WARRANTY 

 
(a) Seller warrants that on the date of shipment the goods are of the kind and quality described herein and 
are free of non-conformities in workmanship and material.  This warranty does not apply to goods 
delivered by Seller but manufactured by others.   
 
(b) Buyer's exclusive remedy for a nonconformity in any item of the goods shall be the repair or the 
replacement (at Seller's option) of the item and any affected part of the goods.  Seller’s obligation to repair 
or replace shall be in effect for a period of one (1) year from initial operation of the goods but not more 
than eighteen (18) months from Seller’s shipment of the goods, provided Buyer has sent written notice 
within that period of time to Seller that the goods do not conform to the above warranty.  Repaired and 
replacement parts shall be warranted for the remainder of the original period of notification set forth above, 
but in no event less than 12 months from repair or replacement.  At its expense, Buyer shall remove and 
ship to Seller any such nonconforming items and shall reinstall the repaired or replaced parts.  Buyer shall 
grant Seller access to the goods at all reasonable times in order for Seller to determine any nonconformity 
in the goods.  Seller shall have the right of disposal of items replaced by it.  If Seller is unable or unwilling 
to repair or replace, or if repair or replacement does not remedy the nonconformity, Seller and Buyer shall 
negotiate an equitable adjustment in the contract price, which may include a full refund of the contract 
price for the nonconforming goods. 

 

(c) SELLER HEREBY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, EXCEPT THAT 

OF TITLE.  SPECIFICALLY, IT DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY, 

FITNESS FOR A PARTICULAR PURPOSE, COURSE OF DEALING AND USAGE OF TRADE.   

(d) Buyer and successors of Buyer are limited to the remedies specified in this article and shall have no 
others for a nonconformity in the goods.  Buyer agrees that these remedies provide Buyer and its successors 
with a minimum adequate remedy and are their exclusive remedies, whether Buyer's or its successors’ 
remedies are based on contract, warranty, tort (including negligence), strict liability, indemnity, or any 
other legal theory, and whether arising out of warranties, representations, instructions, installations, or non-
conformities from any cause.  
 
(e) Note:  The above does not apply to any software which may be furnished by Seller.  In such cases, the 
attached Software License Addendum applies. 
 
 
For warranty and non-warranty service, see the Customer/Product Support section of this manual. 
 
 
 
 
 
 
 
 
 

All product designations may be trademarks or product names of Siemens Energy & Automation, Inc. or other supplier 
companies whose use by third parties for their own purposes could violate the rights of the owners. 
 
Siemens Energy & Automation, Inc. assumes no liability for errors or omissions in this document or for the application and use 
of information in this document.  The information herein is subject to change without notice. 
 
Procedures in this document have been reviewed for compliance with applicable approval agency requirements and are 
considered sound practice. Neither Siemens Energy & Automation, Inc. nor these agencies are responsible for product uses not 
included in the approval certification(s) or for repairs or modifications made by the user. 

 

 

9

Summary of Contents for 73N

Page 1: ...and larger ports in the fast response positioner greater filling and exhausting capacities result This permits a quicker response to a change in control conditions plus increased speed of valve operation Tapped Exhaust The Model 73N Positioner can be ordered with a tapped exhaust port This feature permits piping of the pilot exhaust to a safe atmosphere on applications where noxious gases are used...

Page 2: ...tions are 1 4 NPT 2 The piping recommended for the positioner is 1 4 O D tubing for the INSTRUMENT input connection and 3 8 O D tubing for the supply connection However any scale free piping may be used 3 Blow out all piping before connections are made to prevent dirt chips etc from entering the positioner 4 Use pipe sealant sparingly and then only on the male threads A non hardening sealant is st...

Page 3: ...in failure of the positioner The following materials are in contact with supply air Aluminum Brass Stainless Steel Neoprene and Buna N The requirements for a quality air supply can be found in the Instrument Society of America s Quality Standard for Instrument Air ISA S7 3 Basically this standard calls for the following Particle Size Maximum particle size in the air stream should be no larger than...

Page 4: ...e cases valve shut off or opening may be required at a specific instrument pressure To zero the positioner at this point set the instrument pressure at the specific pressure and turn the zero adjustment screw until the valve reaches the required position A slight change of the instrument pressure should start to move the valve The valve stroke for a given span may also be suppressed or shifted to ...

Page 5: ...12 3612 4024 2 1 2 6412 4812 4012 4824 4024 2 3 4 6412 4812 4412 4824 4824 3 6412 4812 4824 3 1 2 5612 4 6412 Special Notes 1 All range springs are identified as Part No P N 12395 ______ from table 2 Input pressure span pressure max input minus pressure min input e g 3 15 psig range 12 psig span Spring Selection 1 Find valve stroke nearest desired valve stroke 2 Find instrument input pressure span...

Page 6: ...plunger 5 Use a non abrasive solvent to clean the plunger 6 Replace the plunger 7 Replace and tighten the retaining nut 8 Replace the top cover DISASSEMBLY Refer to parts list 1 Loosen the six socket head mounting screws holding the positioner to the actuator 2 Remove the positioner 3 Remove the two body screws holding the diaphragm stack assembly to the positioner body located on the underside of...

Page 7: ...SD73 Figure 4 Schematic Direct Acting Figure 5 Schematic Reverse Acting 7 ...

Page 8: ...et site see the table has current revisions of technical literature in Portable Document Format for downloading To send an instrument to Siemens for warranty or non warranty service call Repair Service and request a Return Material Authorization RMA IMPORTANT An instrument must be thoroughly cleaned decontaminated to remove any process materials hazardous materials or blood borne pathogens prior t...

Page 9: ...s c SELLER HEREBY DISCLAIMS ALL OTHER WARRANTIES EXPRESS OR IMPLIED EXCEPT THAT OF TITLE SPECIFICALLY IT DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE COURSE OF DEALING AND USAGE OF TRADE d Buyer and successors of Buyer are limited to the remedies specified in this article and shall have no others for a nonconformity in the goods Buyer agrees that these remed...

Page 10: ...ng No 10636PL 3 91 Supersedes 8 88 IMPORTANT Service Parts Kits are available for servicing the instrument Contact Siemens for available kits refer to the Product Support section of this instruction Some parts in this Parts List may not be available for separate purchase 10 ...

Page 11: ...awing No 10976PL 3 91 Supersedes 5 86 IMPORTANT Service Parts Kits are available for servicing the instrument Contact Siemens for available kits refer to the Product Support section of this instruction Some parts in this Parts List may not be available for separate purchase 11 ...

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