Shellab SWBR27-2 - Manual (Page 10)

Reciprocating Water Bath 10
OPERATION
Warning: These baths are not intended for use as acid baths. Use as an acid bath will cause severe
damage to bath components and void your warranty. Do not use deionized water, tap water,
or chemicals. USE DISTILLED WATER ONLY.
Turning On the Unit
To turn on the unit, perform the following steps:
1. Check power supply against unit serial plate; they must match.
2. Plug service cord into the electrical outlet. If supplied with a detachable cordset, plug the female end
into the unit inlet and the male plug into the power supply. Verify that units requiring a fuse have the
fuse installed in the power inlet.
3. Fill bath to your required depth with DISTILLED WATER. DO NOT USE TAP WATER, DEIONIZED
WATER, OR CHEMICALS. Normal depth is 5 ½ inches (14 cm), but depth must be at least 2 inches
(5 cm) over the bottom of the rack. Check water level frequently, add water to appropriate levels if
needed. At higher operating temperatures, or under circumstances where a cover cannot be used, it
will be necessary to check the water level more frequently.
4. Push the Main power switch to the ON position and turn the Over Temperature Safety Thermostat to
its maximum position, clockwise.
Bath Cover
Using the bath cover supplied with your accessories will accelerate heat-up time and reduce evaporation.
The cover must be used to reach set points above 60

C. The bath cover is not designed to be airtight and
create a pressurized environment.
There is a half-inch, plugged hole at the edge of the cover. This plug can be removed and a thermometer
can be inserted using the small thermometer clip when calibrating with the cover on. The larger clip is for
calibrating without the cover. See Figure 2 for placement of these clips.
Setting Main Temperature Control
To enter set point mode on the control, push and release either the UP or DOWN arrow pad one time and
the digital display will start to blink from bright to dim. While blinking, the digital display shows the set
point that can be changed using the UP or DOWN arrow pads. If the arrow pads are not pressed for five
(5) seconds, the display will stop blinking and will revert to reading the actual temperature in the bath.
Allow at least two (2) hours for the temperature to stabilize.
Warning: If the tank boils dry while containing plastic ware, the plastic will melt. If you intend to use
test tube racks, remember that plastic coated wire racks may wear and expose metal that
can cause damage. Preferably, use all plastic racks.
Note: The heating element of this bath does not contact the tank bottom and will not burn out if the tank
is allowed to run dry. However, a tank going dry may strain interior surfaces so this should not be
allowed to occur.
Section
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