Eppendorf 3100 Digital Water Bath Shake - Manual (Page 19)

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Innova 3100  M1231-0050 Operating manual
Figure 6: Hose Connections
The overflow tube is the farthest left of the three tubes that project down from
the back of the bath. The other two tubes are used only when the cooling coil
option is installed.

NOTE:
To minimize the development of rust inside the waterbath:
• If you are using tap water in the bath, make sure the water has a low
iron content.
• If you are using distilled water, mix it with a small amount of tap
water and/or add dissolved salts. Any ultra-pure (distilled, de-ionized
or reverse osmosis) water tends to leach the iron from the stainless
steel, encouraging oxidation.
If the cooling coil option is factory-installed in your unit, an additional 16-
foot reinforced rubber hose is provided, with corresponding clamps, for
connection to the coolant or water supply. To install the hose:
1. Cut the hose into two pieces to suit a water supply and drain length
requirement.
2. Attach each of the two hoses to the cooling coil connection tubes with
clamps, allowing 1/8 - 3/16 inch of hose to extend beyond the clamps.
3. One line must go to an open drain or return to a coolant supply; the other
line must be connected to a water or coolant supply.