07-19-B3-430 Auto Syringe AS50 Infusion Pump Operator’s Manual Page 53
Additional Functions and
OperationsC hapter 1
Purge Function
The Purge function advances the syringe plunger driver a preset distance. Manually
purge the syringe and IV extension set before mounting the syringe in the pump. Perform
the Purge function after the syringe is mounted on the pump, (before connecting to the
patient) to eliminate slack in the drive mechanism and thus ensure prompt fluid delivery
when the infusion starts.
Precaution: To prevent unintended delivery to the patient, the IV
extension set must be disconnected from the patient while purging.
The “Purge Delivery Table” on page 54 lists the nominal amount of fluid delivered in one
complete Purge cycle, if there were no slack in the drive mechanism. Use this information
for calculating the excess fluid allowance when filling the syringe.
Purge operation is allowed only when the pump is in Standby state.
Purge Procedure
Precaution: To prevent unintended delivery to the patient, the IV
extension set must be disconnected from the patient while purging.
1. After programming the pump, press STOP (if necessary), to put the pump in Standby.
2. Press PURGE. The normal display is temporarily replaced by a display showing the
purge rate in mL/hr, and the message
PURGE READY.
Note: If
START is not pressed within 10 seconds, the purge function is canceled and the
pump reverts to Standby state.
If a steady drip of fluid is observed before the full purge volume is delivered, purg-
ing can be stopped immediately by pressing
STOP.
3. Press START to begin delivering the fixed purge volume.
The accumulating purge volume is displayed while purging is in progress, then the
normal Standby state display resumes, and the text field reads
PURGE COMPLETE for
a few seconds. The purge may be repeated until the required volume is achieved. The
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