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Mains power connection
Draining the bath
CAUTION
CAUTION
Procedure
Revision 1.1b—November, 1998; CANNON
Attach the MAINS power cord to the connection on the Control Chassis.
Make certain that the instrument power switch on the Control Chassis is
in the OFF position, then plug the power cord into a wall outlet with
electrical specifications matching those on the label on the Control
Chassis rear panel. Use only the supplied, approved appliance cord for
the TE-1500 power connection.
Remove power from the TE-1500 before attempting to remove bath fluid.
Only remove bath fluid if the bath fluid temperature is within 10°C of
ambient.
Use a siphon, inserted through
one of the holes for viscom-
eters, to remove fluid from the
bath. Never attempt to open
the metal bath enclosure.
Bath fluid for the TE-1500 will
need to be replaced periodi-
cally. Depending on the grade
of alcohol being used as a bath
liquid, the frequency of re-
placement may vary greatly.
Contaminants contained in
solution with the alcohol will
remain as sediment in the bath
after the alcohol evaporates. All
sediment should be removed
when replacing bath fluid. If the bath is always maintained at a cold
temperature and the holes at the top are always covered, the rate of
evaporation of the alcohol will be reduced.
The bath liquid in the TE-1500 should be removed by siphoning action.
A general purpose siphon (see Figure 6) is available wherever kerosene
heaters are sold. This simple plastic device has an integral squeeze pump
to start the siphoning with a long, straight input hose and a flexible
output hose.
An alternate method is a vacuum system with a container trap for con-
tainment of the bath fluid. The continuous vacuum in such a system
provides an easy means to remove any solid dirt particles and completely
empty the bath.
Using a siphon or vacuum hose placed into one of the two instrument
holes at the top, transfer all of the bath liquid into another container
(Metal waste receivers, if used, should be grounded). Briefly turn on bath
power and energize the Reciprocating Pump by depressing the circular
®
TE-1500 Thermoelectric Constant Temperature Bath
CANNON
2139 High Tech Road • State College, PA 16803 • USA
Figure 6: Removing fluid to a
grounded metal waste receiver with
a siphon
®
Instrument Company
13
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