Thermo Scientific RO-20, Руководство по эксплуатации

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Ro-20 RB-XXX-XXXXXX E 4-5
Löw 08.10.2008
To complete disassembly of the chamber:
1. Remove the three nuts and screws holding the metal cup in place.
2. Lift out the cup and the insulating disk. The three nylon shoulder washers may be
pushed out if desired.
3. Unscrew the guarded feedthrough to finish the disassembly.
To remove the battery board and bracket assembly:
1. Remove the batteries (AA cells and 12V cells) and remove the desiccant package.
2. Unplug the two main board connections and unsolder the two wires from the chamber
bias supply.
3. Remove the four screws holding the chassis to the board spacers and lift it off.
To separate the main board from the cover:
1. Unplug the cable between the board and the cover.
2. Remove the Knob from the Function Switch and remove the nut from the switch
bushing.
3. Remove the two screws from the long standoffs at the front of the board and pull the
cover and the board apart. The light switch pins will slip out of the connector.
To remove the meter:
1. Unsolder the wires from it.
2. Remove the two nuts and washers and remove the two long hexagon shaped spacers at
the front.
3. Remove the meter retainer and lift out the meter.
4. The slide, the slide holder and the feet may be removed from the can by removing the
four nuts and screws which hold them.
4.1.6 Reassembly
In general, for reassembly, reverse the procedure used in disassembly.
The aluminized Mylar face on the bottom of the can is one mil (.001 in., 25 microns) thick. It
is glued to the can using electrically conductive adhesive. If only one side of the Mylar is
coated with aluminum, that side must be positioned against the can.