Display And Indicators Fail To Illuminate; Hard-To-Release Sample Holder; Substantial Difference Between Adsorption And Desorption Result; Lodged Flowmeter Float - Micromeritics FlowSorb III 2305 Operator's Manual

FlowSorb III

Display and Indicators Fail to Illuminate

Verify that the electrical outlet is energized and power is available by plugging in
another appliance. Unplug the FlowSorb and examine the fuse and the voltage se-
lector circuit board; replace the fuse if necessary. If the problem persists, again
unplug the instrument and remove the back panel. Examine all connectors to be
sure that they are firmly engaged. Check for broken wires, especially in the
lower areas of the instrument near the power entrance, power switch, and power
transformer.

Hard-to-Release Sample Holder

O-ring, sliding seals as utilized on the connecting ends of the sample holder tend
to make insertion and removal somewhat difficult if they become dry. A very
small amount of stopcock grease applied to the two external O-rings will restore
free movement. Only a minute quantity of grease is required; avoid application of
excessive amounts.

Substantial Difference Between Adsorption and Desorption Result

Generally there will be little difference between indicated adsorption and desorp-
tion data (surface area in the case of single-point analysis and gas volume in mul-
tipoint testing). Substantial and persistent differences can be indicative of a leak
somewhere in the system.

Lodged Flowmeter Float

Fine particles that escape filter entrapment, as well as accumulated vapor deposi-
tion can cause the ball float to become lodged in the glass tube of the flowmeter.
Contact your local Micromeritics service representative if this occurs.
Aug 00
Troubleshooting
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