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Purpose: To replace the Inorganic Carbon Remover (ICR) Power Control Board in Sievers* On-Line TOC
Analyzers and the Sievers External ICR unit.
Scope: This procedure describes how to remove and replace the ICR Power Supply Board in the following instruments: 900/5310C On-Line TOC Analyzers and the External 900 ICR Unit for a Sievers 900
Laboratory or Portable Analyzer.
Safety: Personnel skilled in the maintenance of electromechanical instruments should perform this procedure.
ICR Power Supply Board Replacement Kit (Including the ICR Power Supply board and short Phillips-head #1 screwdriver)
Long #2 Phillips-head (crosshead) screwdriver
Needle-nose (long-nose) pliers
Electrostatic discharge (ESD) protection
Sievers External ICR unit (Only) :
The ¼ ” open-end wrench (from the Analyzer Accessories Kit)
Allen (hex) keys, 7/64 ” and 3/32 ” (from the ICR Accessories Kit)
A 5/16 ” open-end wrench
A.
Replace the ICR Power Supply board on a 900 On-Line TOC Analyzer or a 5310C On-Line TOC Analyzer.
OR
B.
Replace the ICR Power Supply board on an External 900 ICR Unit.
 Disconnect the ICR from the Analyzer
 Remove the Old ICR Power Supply Board
 Install the New ICR Power Supply Board
 Reconnect the ICR to the Analyzer
GE Analytical Instruments, Inc.  2011J Page 1 of 11 DIN 43050-01 Rev. A
KIT, ICR POWER SUPPLY REPL

Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
1.
Save the system settings to the USB port on the Analyzer ( Maintenance Tab >
Advanced > USB I/O > Save System
Settings ). note: For more information, refer to the
O peration and Maintenance Manual for the Analyzer.
Turn off power to the Analyzer using the main power switch located on the right side of the Analyzer, and then shut off power at the mains.
2.
Ensure that you are using ESD protection while working inside the Analyzer
Note: typically, you can use an ESD wrist strap containing an alligator clip or conductive adhesive for easy contact to any electrical ground.
3.
Open the door to the Analyzer, and then remove the electronics area cover by removing the two Phillips-head
(crosshead) screws.
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Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
4.
Locate the current ICR power supply board in the front, top-right corner of the
Analyzer.
5.
Disconnect the push connector located at the front of the board.
Note: You can use needle-nose pliers to pull out the top of the connector, if needed.
6.
Disconnect the push connector located at the rear of the board.
Note: You can use needle-nose pliers to pull out the top of the connector, if needed.
GE Analytical Instruments, Inc.  2011J Page 3 of 11 DIN 43050-01 Rev. A
KIT, ICR POWER SUPPLY REPL

Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
7.
Remove the current ICR Power Supply board.
Use the short Phillips-head (crosshead) screwdriver (included in the ICR Power
Supply board Kit) to remove the following two screws on the board:
 Front, right corner
 Rear, left corner
Set aside the two screws for use in the next step.
8.
Remove the new ICR Power Supply board from its packaging.
9.
Using the short Phillips-head (crosshead) screwdriver (included in ICR Power Supply
Board Kit), attach the board to the
Analyzer with the two screws saved from the previous step.
10.
Plug the front and rear push connectors into the new ICR Power Control board.
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Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
Note: the 900 degasser module is shown in all the following photos, for example use only. however, the installation steps for the 5310C and 900 Muni applications are still the same.
1.
If the Analyzer is taking measurements, press the Stop Analysis button.
2.
Insert a USB flash memory drive into the port labeled USB on the side of the Analyzer and back up the current Analyzer settings
( Maintenance > Advanced > USB I/O > Save
System ).
For more information, see the section called
“Saving System Settings” in the Analyzer’s
Operation and Maintenance Manual .
3.
Remove the USB flash memory drive from the
USB port and store it in a safe place.
4.
Empty the reagent syringes (Maintenance >
Advanced > Empty Syringes).
5.
Turn off power to the Analyzer. Also shut off the circuit breaker for the Analyzer.
6.
Turn off the power on the ICR, and unplug the
ICR power cord from its power source.
Analyzer Power Switch
Remove the power cord from the ICR.
7.
Disable the flow of water to the Analyzer.
ICR Power Switch and
Power Cord Connection
GE Analytical Instruments, Inc.  2011J Page 5 of 11 DIN 43050-01 Rev. A
KIT, ICR POWER SUPPLY REPL

Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
8.
Remove the External ICR unit from the
Analyzer.
Using the 1/4" open-end wrench (from the
Analyzer Accessories Kit), loosen the two
Valco fittings that connect to the From ICR and To ICR ports on the back of the
Analyzer.
9.
Remove the communication cable from the
ICR Communication Cable port on the ICR.
ICR Communications
Cable Port
10.
If your Analyzer and ICR unit are assembled together, loosen the two set screws that connect the ICR bracket to the Analyzer bracket, and then pull the ICR away from the Analyzer.
Set the screws aside for re-use in later steps.
11.
Using a 5/16" open-end wrench, loosen the brass nut on the chemical trap and remove the air inlet tubing.
GE Analytical Instruments, Inc.  2011J Page 6 of 11 DIN 43050-01 Rev. A
KIT, ICR POWER SUPPLY REPL

Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
1.
Ensure that you using ESD protection while working inside the Analyzer
Note: typically, you can use an ESD wrist strap containing an alligator clip or conductive adhesive for easy contact to any electrical ground.
2.
Remove the four small Phillips-head screws on the outside of the ICR cover, and lift the cover off the unit (with the chemical trap still attached).
3.
Temporarily remove the degasser to allow room to work on the ICR Power Control board:
A.
Unscrew and remove the PEEK nut
(with restrictor tubing connected), from the top hole of the degasser.
B.
Using the Allen keys (from the ICR
Accessories Kit), remove the two socket cap screws from the degasser bracket.
Set these aside to use in later steps.
C.
Lift the degasser out of the bracket, with the tubing assemblies still attached.
Caution: Do NOT stretch or bend the tubing.
D.
Carefully set the degasser just outside of the ICR case.
4.
Locate the ICR Power Supply board.
A.
B.
ICR Power Supply Board
D.
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Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
5.
Disconnect the push connector located on the left end of the board.
6.
Disconnect the push connector located on the right end of the board.
Note: You can use needle-nose pliers to pull out the top of the connector, if needed.
7.
Remove the current ICR Power Control board. Use the long #2 Phillips-head
(crosshead) screwdriver to remove the two screws (located on opposite corners) on the board.
Set aside the two screws for use in the next step.
1.
Remove the new ICR Power Control board from its packaging.
2.
Using the long #2 Phillips-head (crosshead) screwdriver, attach the board to the ICR casing with the two screws saved from the previous step.
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Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
3.
Re-insert the push connector located on the left end of the board.
4.
Re-insert the push connector located on the right end of the board.
5.
Replace the degasser on top of the bracket, lining up the holes in the degasser with the holes in the bracket.
6.
Using the Allen keys (from the ICR
Accessories Kit), and the socket cap screws set aside in a previous step, re-secure the degasser to the bracket.
Caution: Do NOT stretch or bend the tubing.
7.
Re-insert the restrictor tubing with PEEK nut into the top hole on the end of the degasser, and turn the PEEK nut as tight as possible.
8.
Replace the ICR cover onto to the standalone unit, and secure with the four small Phillips-head screws you set aside previously.
Note: Be careful not to pinch any tubing as you slide the cover onto the ICR unit.
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Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
1.
Re-insert the air inlet tubing into the end of the chemical trap, using a 5/16" open-end wrench to tighten the brass nut.
2.
If your Analyzer and ICR unit were originally installed with a connection assembly, reinstall the ICR bracket to the Analyzer bracket, and secure with the two set screws you saved from a previous step.
3.
Reconnect the communication cable from the Analyzer to the ICR Communications port on the ICR.
ICR Communications
Cable Port
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Replacing the ICR Power Supply for 900/5310 C On-Line TOC Analyzers and the External ICR Unit
4.
Attach the tubing from the ICR port labeled
Outlet to the Analyzer port labeled From
ICR .
5.
Tighten the Valco fitting with a 1/4" openend wrench (from Analyzer Accessories Kit)
1/8 turn past finger-tight. Do NOT overtighten the fitting.
6.
Attach the tubing from the ICR port labeled
Inlet to Analyzer to the port on the Analyzer labeled To ICR .
7.
Tighten the Valco fitting with a 1/4" openend wrench 1/8 turn past finger-tight. Do
NOT over-tighten the fitting.
8.
Re-attach the ICR power cord to the unit.
9.
Turn on the circuit breaker for the Analyzer, and turn on the power to the Analyzer.
10.
Re-establish the flow of water to the
Analyzer.
*Sievers is a trademark of General Electric Company and may be registered in one or more countries.
GE Analytical Instruments, Inc.  2011J Page 11 of 11 DIN 43050-01 Rev. A
KIT, ICR POWER SUPPLY REPL