Labconco Biological Safety Cabinets 34269 Series - Manual (Page 23)

Chapter 3: Getting Started
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Original instructions
Circulator Installation (optional)
In order to successfully install a user-supplied circulator on a Cell Logic
Biosafety Cabinet with Temp-Zone package please follow the steps below
and refer to Figure 3-5:
Note: The work surface is heavy and two Easy-Clean™ Prop Rods are
provided to pivot and support the Temp-Zone work area and the work
surface.
1. The Temp-Zone work area has supply and return lines for the user-
supplied circulator. Refer to Figure 3-5 and locate the two quick
connect elbows on the left side of the cabinet behind the left side
panel.
2. Find a suitable place next to the cabinet or underneath the cabinet to
place the circulator. Accessory shelves for small circulators are
available from
www.labconco.com . Larger circulators should be
placed on the floor.
3. Pivot the work surface up and use the Easy-Clean Prop Rods to
support the work surface. Then locate the tubing, insulation, and
quick connect fittings shipped with your Cell Logic. The tubing is
3/8" OD (9.5 mm) and tube inserts must be placed inside the tubing to
properly support the tubing inside the quick connect fitting. 20 feet
(6.1 meters) of tubing length is provided for your convenience.
Note: The tube inserts prevent the tubing from collapsing at
connection points and must be used.
4. Plan, route and cut the tubing from the two elbows on the left side of
the cabinet to the circulator.
5. Locate the quick connect fittings (3/8" tube x 1/8 NPT, 3/8" tube x 1/4
NPT, and 3/8" tube x 3/8 NPT) and install the appropriate fittings to the
user-supplied circulator with appropriate pipe sealant or PTFE tape.
6. Place tube inserts in all ends of the cut-to-size tubing.
7. Cut and install the insulation around the cut tubing lengths.
8. Insert cut tubing lengths into the elbows on the cabinet and then
install both tubing lengths into the circulator to complete the water
circulator loop.
9. Read and follow the circulator instructions before operating. The
circulator should have a minimum flow rate of 0.5 GPM (1.9 LPM).
In all cases, the temperature of the circulator will not equal the
temperature of samples on the Temp-Zone. Factors such as the
sample vessels, sample sizes, aluminum tube racks, and length of
tubing connecting the circulator to the Temp-Zone can influence the
sample temperature. Circulator settings to hold heated incubator
sample temperatures may require 0.3-2.0°C higher temperatures than
the desired sample temperature. Furthermore, circulator settings to
maintain chilled refrigerated samples may require 0.3-3.0°C colder
temperatures than the desired sample temperature. Experimentation is
necessary to achieve proper sample temperatures.