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UM91-HF 

3) 

To install replacement parts:

 

 

a. 

Order repair kits; see the assembly drawing for part numbers.

 

b.

 

Shut off supply air. Back out the adjusting screw. 

c. 

Remove four corner bolts from bottom of unit and four screws on the top. Remove all parts.

 

d. 

Replace all parts that show excessive wear.

 

e. 

Clean all parts and replace in the reverse order.

 

 

CUSTOMER/PRODUCT SUPPORT 

For support and the location of your local Siemens representative, refer to the table below for the URL of the Process 
Instrumentation (PI) portion of the Siemens public Internet site. Once at the site, click 

Support

 in the right column and then 

Product Support

. Next select the type of support desired: sales, technical (see the table below), documentation, or software. 

 

Online Support Request 

http://www.siemens.com/automation/support-request

Technical Support 

1-800-333-7421; 8 a.m. to 4:45 p.m. eastern time, Monday through Friday (except 
holidays) 

Customer Service & Returns 

1-800-365-8766 (warranty and non-warranty) 

Public Internet Site 

http://www.usa.siemens.com/pi

Technical Publications 
in PDF 

Click the above link to go to the Siemens Internet site and then click 

Process 

Instrumentation

. In the column to the right, click 

Support

 > 

Manuals

. In the 

column to the left, select the product line (e.g. Pressure or Temperature or 
Controllers) to open navigation and search panes. Note: Navigation may change as 
the site evolves. 

 

Warranty 

The sales contract contains the entire obligation of Siemens. The warranty contained in the contract 
between the parties is the sole warranty of Siemens. Any statements continued herein do not create new 
warranties or modify the existing warranty. 

 
 
 
 
 
 
 
 
 
 
 
 
All product designations may be trademarks or product names of Siemens Industry, Inc. or other supplier companies whose use by third 
parties for their own purposes could violate the rights of the owners. 
 
Siemens Industry, 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 Industry, 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. 

 

„

 

 

4

Summary of Contents for 91-HF

Page 1: ...sumption Less than 5 SCFM 0 17 m3 hr Effect of Supply Pressure Variation Less than 0 2 psig 1 4 kPa for 25 psi 170 kPa change Ambient Temp Limits 0 to 160 F 18 to 71 C Weight 1 6 lb 725 g MATERIALS OF CONSTRUCTION Body Diecast Aluminum Alloy Irridite and Baked Epoxy Finish Filter 3 Micron Phenolic Impregnated Cellulose Diaphragm Nitrile Elastomer and Nylon Fabric Valve Seat Plug Nitrile Elastomer ...

Page 2: ... an appropriate certificate Non approved instruments are suitable for use with instrument air only Optional features and modifications such as tapped exhaust do not imply suitability for use with hazardous gases except as listed on an approval certificate CAUTION Synthetic compressor lubricants in the instrument air may cause deterioration of some components resulting in instrument failure See mat...

Page 3: ...accumulated liquid 2 To clean the filter element a Shut off supply air WARNING Components can be ejected with great force if the instrument is disassembled while pressure is applied To avoid the risk of death or serious injury always turn off and vent supply pressure and any downstream pressure source when disassembling the instrument b Drain condensate c Remove four corner bolts from the bottom o...

Page 4: ...to the Siemens Internet site and then click Process Instrumentation In the column to the right click Support Manuals In the column to the left select the product line e g Pressure or Temperature or Controllers to open navigation and search panes Note Navigation may change as the site evolves Warranty The sales contract contains the entire obligation of Siemens The warranty contained in the contrac...

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