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Section 5
The Model 20 has been designed to produce a soft,
pliable slush for surgical procedures. The volume of
slush produced is dictated by the surgical procedure;
however, the full capacity of the removable basin is 6
liters.
The following steps illustrate how to prepare the unit to
produce the slush. All sterilization procedures should
follow hospital standards and local health codes.
Step 1
Plug the power cord into a 115 volt wall receptacle.
Step 2
Place the unit in the "ON" position by pressing the
control switch. A light will illuminate, indicating that the
refrigeration system is operating.
Figure 1
Step 3
Add a heat transfer medium (1200 cc's minimum/1300
cc's maximum) to the insulated evaporator. The heat
transfer medium is dictated by the hospital. The
solution should be a good conductor of heat, but
should not freeze at a temperature above --37.2_C.
Model 20
Operating Procedures
Example 1: 50% by volume solution of alcohol and
water.
Example 2: 50% by volume solution of glycerin and
water.
Example 3: 50% by volume solution of propylene
glycol and water.
Allow the unit to operate for approximately 20 minutes
to pre--cool the heat transfer medium. Note: This time
can be significantly reduced if the heat transfer
medium is pre--cooled in a refrigerator.
Step 4
After the pre--cooling period, drape the unit according
to acceptable sterile techniques. Lay the sterile drape
sheet over the insulated evaporator and over the sides
of the unit. Do not cover the louvers.
Step 5
Using sterile techniques, gently place the sterile
removable basin onto the drape and into the well of the
unit.
9
Figure 2
Figure 3
Operating Procedures
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