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14
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.
NOTE:
If you are using tap water as coolant for the unit, it is preferable that the
supply hose be attached to a supply valve, to minimize water use.
3.3.3
CAUTION!
Be sure to use the following checklist BEFORE making
electrical connections.
1. If you have not already done so, check the voltage selector switch at the
rear of the unit to be sure that it is set to the appropriate voltage.
2. Remove the caution label from the rear of the unit.
3. Set the circuit breaker on the right side of the unit to the OFF position.
ONLY THEN:
4. Connect the power cord to the power cord connection and to a grounded
electrical outlet.
New Brunswick Scientific
Electrical Connections
User's Guide
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