Maintenance
03-914642-00:6
7-7
5. Trace the valve wires to the rear panel and unplug the connector. Cut off the
old connector, then remove the valve (15) from its mount.
6. Install the new valve in the reverse order. Run the valve wires through the
back panel then attach the connector. Reinstall the probe, upper soil valve,
and cover. Reinstall the power cord and turn the power back on.
Note:
In Figure 7-3 when removing Angar valve you must remove metal plate
under mount plate (13). Remove insulated divider then remove three
socket head screws on top of mount plate.
7.10
Sample Stir Motor Speed Adjustment
The speed of the sample stir motor may be increased or decreased by the
adjustment of a pot. A small jeweler's screwdriver (1/16" flat blade or Phillips) is
required.
1. Locate the pot access hole, on the rear panel of the Archon on the upper left
side. The hole is below the 9-pin “D” connector labeled “Remote RS-232.”
2. Start a manual sample. Be certain the stir motor is turned “ON” in the
method.
3. Insert the screwdriver into the hole and rotate the pot, CW will increase the
speed and CCW will decrease the speed. Observe the response on the stir
motor magnet.
C A U T IO N
Only slight pressure is necessary. Do not push hard
with the screwdriver as damage may occur.
4. Once the speed is adjusted, stop the run.
Figure 7-5
Stir Motor
Adjustment Hole
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