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With 526 XXX3 models, an optional remote alarm provides an audible and visual warning that a changeover 
is about to occur.  Pressing a button on the front of the remote alarm silences the audible alarm.  The LED’s 
on the remote alarm indicate the status of the left and right banks.

INTENDED USE OF PRODUCT

The brass switchover system (526 series) is intended for use in high purity, non-corrosive, non-toxic gas 
ap pli ca tions.  Please note the safety information shown in the later sections.

USER RESPONSIBILITY

This equipment will perform in conformity with the description contained in this manual and accompanying 
labels and/or inserts when installed, operated, maintained, and repaired in accordance with the instructions 
provided.  This equipment must be checked periodically.  Improperly working equipment should not be used.  
Parts that are broken, missing, worn, distorted or contaminated, should be replaced immediately. CONCOA 
rec om mends that a telephone or written request for service advice be made to  CONCOA Customer Service 
in Virginia Beach, Virginia. 
PHONE:  1-800-225-0473, FAX:  1-757-422-3125, or E-MAIL: [email protected].

This equipment or any of its parts should not be altered without prior written approval by CONCOA.  The 
user of this equipment shall have the sole responsibility for any malfunction that results from improper use, 
faulty main te nance, damage, improper repair, or alteration by anyone other than CONCOA or a service 
facility des ig nat ed by CONCOA.

CUSTOMER ASSISTANCE

In the event of equipment failure, call CONCOA Customer Service.  Please be pre pared to provide the model 
number and serial number of the equipment involved, in addition to some details regarding its ap pli ca tion.  
This would include inlet and outlet pressures, fl ow rate, environmental con di tions, and gas service.

Things to consider before removing the system from the box….

1.  Know the properties and special handling requirements of the gas being used.  Many specialty 

gases are quite dangerous (fl ammable, toxic, corrosive, asphyxiant, or oxidizers).  Equipment 
failure or misuse may lead to problems such as a release of gas through the relief valve or regulator 
diaphragm.  Proper safety measures should be established to handle these and other component 
failures.

2.  Be sure that the assembly purchased is suitable for the gas and type of service intended.  The 

regulator label provides the following information:
a.   Model number
b.   Serial number
c.    Maximum inlet pressure

MODEL NUMBER

OUTLET PRESSURE (with Line Regulator)

526 XX1X

0-15 PSIG

0-1 BAR

526 XX2X

0-50 PSIG

0-3.5 BAR

526 XX3X

0-100 PSIG

0-7 BAR

526 XX4X

0-250 PSIG

0-17 BAR

526 XX7X

0-150 PSIG

0-10 BAR

Summary of Contents for 526 **1 Series

Page 1: ...n High Purity Applications INSTALLATION AND OPERATION INSTRUCTIONS Before Installing or Operating Read and Comply with These Instructions Controls Corporation of America 1501 Harpers Road Virginia Beach VA 23454 To Order Call 1 800 225 0473 or 757 422 8330 Fax 757 422 3125 www concoa com April 2012 Supercedes August 2005 ...

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Page 3: ...chover system If the system includes the optional remote alarm refer to ADI 5106 or ADI 8824 for installation and operation instructions The standard switchover system will maintain a variable line pressure within the values shown in the table below MODEL NUMBER OUTLET PRESSURE without Line Regulator 526 2X0X 35 95 PSIG 2 4 6 5 BAR 526 3X0X 65 135 PSIG 4 5 9 3 BAR 526 4X0X 160 235 PSIG 11 16 2 BAR...

Page 4: ...COA The user of this equipment shall have the sole responsibility for any malfunction that results from improper use faulty maintenance damage improper repair or alteration by anyone other than CONCOA or a service facility designated by CONCOA CUSTOMER ASSISTANCE In the event of equipment failure call CONCOACustomer Service Please be prepared to provide the model number and serial number of the eq...

Page 5: ...on their use such as flow rate and temperature requirements Store cylinders with valve caps screwed on and cylinders chained to a supporting wall or column Handle cylinders carefully and only with valve caps screwed on The cap will reduce the chance that the cylinder valve will break off if the cylinder is accidentally dropped or falls over The cap also protects the cylinder valve from damage to s...

Page 6: ... Information on the properties manufacture transportation storage handling and use of hydrogen 12 C G A Pamphlet G 6 Carbon Dioxide Information on the properties manufacture transportation storage handling and use of carbon dioxide 13 C G A Pamphlet G 6 1 Standard for Low Pressure Carbon Dioxide Systems at Consumer Sites 14 C G A Pamphlet P 1 Safe Handling of Compressed Gases in Containers 15 C G ...

Page 7: ...f valve is to protect the autoswitch system and its components only If there is pressure sensitive equipment downstream of the autoswitch system it is recommended that a relief valve 534 Series be installed in the line to protect this equipment 7 Purge devices These devices are optional Purge devices are used to remove toxic corrosive or flammable gases from the customer s system to a safe dischar...

Page 8: ...the threads to make a gas tight seal On stainless steel connections the thread sealant helps prevent the connections from galling together when tightening or loosening CONCOA uses PTFE tape on all of its regulator NPT connections Follow these rules when using PTFE tape Figure 3 Installation Bracket Inspect the NPT threads and if necessary clean the fitting to remove any dirt or thread sealant that...

Page 9: ...d of the pigtail The female NPT pigtail end will connect to the user s system If configured with a CGAconnection or international inlet connection the connection will be specific to the particular cylinder of gas to be used Some connections do require the use of a gasket Please note that the material of the gasket must also be compatible with the type of gas being used Be familiar with the type of...

Page 10: ... pressurize when the cylinder valve is opened 4 Keep the hand wheel or wrench on the open cylinder valve at all times to allow prompt emergency shut off 5 Inspect all connections for leaks and fix any leaks A leak detection solution may be applied to the connections if compatible with the application which indicates leaks by bubbling To further check for leaks or if the leak detection solution can...

Page 11: ...or on the primary side allows the regulator main valve to remain open Second when the cylinder is changed gas will begin to flow from the new cylinder stopping flow from the existing cylinder This means the existing cylinder may be partially empty After several cycles it is possible that the reserve cylinder may empty shortly after a switchover occurs Always remember to rotate the knob on the prio...

Page 12: ...of gas supply Outlet pressure Approximate gas usage SERVICE A unit that is not functioning properly should not be used It is recommended that all servicing be done by a service facility authorized by CONCOA Contact CONCOA Customer Service in Virginia Beach Virginia for systems still covered by the warranty For items not covered by the warranty contact the nearest CONCOA District Sales Office for a...

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Page 15: ...ne other than CONTROLS CORPORATION OF AMERICA or if the equipment has been subject to abuse misuse negligence or accident CONTROLS CORPORATION OFAMERICA s sole and exclusive obligation and Buyer s sole and exclusive remedy under the above warranties is limited to repairing or replacing free of charge at CONTROLS CORPORATION OFAMERICA s option the equipment or part which is reported to itsAuthorize...

Page 16: ...16 Controls Corporation of America 1501 Harpers Road Virginia Beach VA 23454 To Order Call 1 800 225 0473 or 757 422 8330 Fax 757 422 3125 www concoa com ADI 3166 G Certified ISO 9001 ...

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