ThermoFisher Scientific 8500 FDMS Series Service manual

Environmental Instruments Division 27 Forge Parkway Franklin, MA [phone] www.thermofisher.com/aqi
Air Quality Instruments 02038 [phone]
[phone] fax
Technical Bulletin
Thermo Scientific Series 8500 FDMS
Chiller Cleaning Procedure
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Bulletin # 8500C - 11132010 Rev 11/2010
The following procedure will assist in proper Series 8500 FDMS Chiller cleaning.

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Equipment needed:
1. Chiller cleanout kit # 59-011572
Prepare the unit:
1. Remove the 47mm filter cartridge and filter by turning cartridge holder counter clockwise.
Orifice fitting
Adapter fitting
Chiller cleanout kit
# 59-011572

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2. Wipe any visible residue off both the cartridge holder (chiller cap), and inside of the chiller
compartment with lint free cloth.
3. Replace the chiller cap (without the 47mm filter holder) and close turning clockwise.
4. Remove the following connections:
4.1. Remove the large panel from the 8500 to access the air lines.
4.2. The green line going to the top dryer connection is your vacuum supply, remove it from the
fitting by pushing against the fitting ring while pulling on the tube.
4.3. Remove connection to the “Chiller Out” and connect to “Orifice Fitting”. (See step 5.2)
4.4. Remove connection to the “Chiller In” and connect “Adapter Fitting”. (See step 5.3)

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5. Connecting the Chiller cleanout kit fittings:
5.1. The two fittings in the chiller cleanout kit (# 59-011572) allow for
controlled flow through the dryer during the heating process.
5.2. Insert the orifice fitting in the lower port. (“Chiller Out”)
5.3. Insert the Adapter fitting in the upper chiller port. (“Chiller In”)
5.4. Insert the vacuum line into the adapter fitting.
Chiller in
(Step 4.4)
Chiller out
(Step 4.3)
Vacuum
(Step 4.2)

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6. Start the Configuration utility:
6.1. Connect a computer to the 8500 via the RS232 connection and start the ‘8500
Configuration Utility’ program.
Chiller in
(Step 5.3)
Chiller out
(Step 5.2)
Vacuum
(Step 5.4)

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6.2. Click on the button labeled ‘Advanced’ at the top.
6.3. In the ‘Clean Mode’ box next to ‘Start’, select the number of minutes (between 1 and
10) to remain at 50C for cleaning. Five minutes is typical.
RS232

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Cleaning the unit:
1. Start the cleaning cycle:
1.1. Press the start button.

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1.2. Check the Status bar at the bottom of the window. It should read as below “In cleaning
mode. Please wait….”
1.3. If you need to end the cycle for any reason, press ‘Stop’.
1.4. After stopping the cycle the status should read ‘Cleaning canceled. Press START to go
back.

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’
1.5. After starting, the Cooler temperature will increase until it reaches 50oC.
1.6. Once at temperature, the Status mode will change to a countdown, indicating the time
remaining at temperature.

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1.7. After the time has expired, the Status will read ‘Cleaning is done’.