Agilent 708-DS Dissolution Apparatus
Training Manual
Revision A September 2010
P/N: xx-xxxx
3.1.1. RPM / Wobble
To measure and record the RPM and Wobble, the All Position Spin
feature is enabled. This allows for the spindles to rotate while the drive
unit is in a raised position. Press Menu > Instrument from the Main
screen. To enable this function, place a check in the All Position Spin
box.
Figure 3-1. RPM and Wobble Measurement on a 708-DS
Raise the shaft to an appropriate level by pulling up on the shaft locking
collar of the vessel position to be measured. If necessary, the evaporation
covers may be lifted out of the way. To do this, raise the DDM alignment
shaft until the o-ring is inside the drive unit. This keeps the covers from
interfering with the RPM / Wobble measurement.
Place the QA II Station RPM / Wobble gauge (with the Ease Align adapter
attached) on the vessel rim. It is necessary to orient the gauge so that the
corner cutouts of the Ease Align adapter are positioned where the vessel
rim clips are. Attach the RPM clip to the shaft in front of the RPM sensor.
Place the pointer of the wobble gauge on the lower rim of the basket or
just above the paddle blade depending on the apparatus installed.
Activate the spindles at the desired RPM and record the values.
Spindle rotation may be initiated in a variety of ways including:
From the Main screen, press the RPM hotspot, enter the desired
spindle speed and press Ok.
From the Main screen, press Menu > Diagnostics. Touch
anywhere inside the RPM box, enter the desired spindle speed,
press Ok, and then press Run.
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