User's Manual

Table Of Contents
120
Equilibrate and pull NaOH through system
The reservoir pressure in the Pump is equilibrated with outside ambient pressure
and NaOH is pulled through the pumping mechanism. This procedure uses the
following volumes in syringes 3 and 1:
Syringe 3 with residual NaOH from the previous section.
Syringe 1 with 5 ml insulin/buffer mixture from previous section.
Syringe 3: NaOH - Residual
1. Verify that the stopcock on syringe 3 is open.
Syringe 1: Insulin - Residual
1. Prime the needle. Close the stopcock.
2. Obtain a vacuum by pulling back on the plunger until it locks. Press the lock
into the plunger groove to be sure it is firmly secured.
3. Enter the side port with the stopcock closed.
4. Open the stopcock.
5. Program and deliver a 4 unit bolus to open the valve in the Pump mechanism.
6. Observe syringe 3. When the level of the NaOH approaches 2 ml, close the
stopcock to prevent air from entering the Pump. Observe syringe 1. At least 1
ml of NaOH must pass into syringe 1 in order to thoroughly clean the Pump
mechanism. If less than 1 ml enters, repeat the bolus from Step 5, some
pumps may require 3 successive boluses to obtain 1 ml.
NOTE: In order to completely dissolve deposits in the Pump
mechanism, it is important to maintain a vacuum with
syringe 1 and deliver the entire bolus.
7. After the bolus, close the stopcock on syringe 1. Remove both syringes. Set
aside syringe 3 for use in removing the NaOH from the Pump fill port in the
next step. Discard syringe 1.