DATREND Systems vPad-IV, Operating Manual

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vPad-IV OPERATORS MANUAL
2-24, will require connection of a
rigid
closed vessel, such as a stoppered erlenmeyer flask, to the Module
output (
Figure 16
). The flask is then pressurized or evacuated through a separate line to an external air
pump or other source of compressed air. As shown in
Figure 16
, best results will be obtained when the
applied air pressure is regulated with a suitable control valve or equivalent apparatus.
3.5.3 Channel Status
Start the vPad-IV app if it is not already running. When app startup is complete, check the channel status
icons which are displayed on the lefthand side of the tablet screen. Channels that are ready to run a test will
show the icon ("setup and run"). Channels which are available but not ready show the icon
("alert"). Alert status usually means the channel requires priming ; see below for further instructions.
3.5.4 Priming
CAUTION: use only distilled water or clean drinking water with vPad-IV.
Refer to Section 3.5.1 for further instructions and warnings.
Connect input and output tubing provided with vPad-IV to the Module (see
Figure 15
). Fill the syringe
included in the tubing kit with distilled water or clean domestic (i.e. "tap") water. Connect the syringe to the
stopcock of the input tubing, set the stopcock to the syringe port and then slowly inject at least
20 ml of
water to purge all air from the unit. Observe the output tubing while priming and stop injecting when both
input and output tubes appear completely filled.
The vPad-IV app can assist with priming to ensure that trapped air is purged from the internal system. Run
the app, and following startup, select a Module to be primed by pressing the corresponding "alert" icon
on the left.
Figure 16
Setup/Chapter 3
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