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CHAPTER
6 6 6 6 6
A. Preventative (scheduled) maintenance
Cleaning of painted surfaces and front panel
Cleaning the fans and heat sinks
Cleaning fans
The TE-3000 was designed for minimal care and maximum reliability.
By following a few basic rules of preventative maintenance, the TE-3000
should provide years of trouble free operation.
Additionally, the TE-3000 provides an automatic built-in self test which
examines the operation and performance of the instrument. These diag-
nostic routines assist the user by presenting the results of all tests and a
determination of what is wrong if any test fails. This gives the user a high
level of confidence that the instrument is functioning properly or if not,
exactly where the problem is located.
The TE-3000 requires a minimum amount of maintenance at intervals
that are entirely dependent upon the environment and the degree of
usage. In the typical situation of an average modern laboratory perform-
ing a dozen tests daily, the following items should be performed every six
months. If the bath is located in a dirty environment and/or is heavily
used, the preventative maintenance listed below should be scheduled on a
monthly basis.
The finish of the TE-3000 is a baked-on epoxy enamel in colors of
almond and black. This paint is virtually immune to most solvents,
however, if acetone is rubbed on the painted surfaces, the paint will be
removed. A good quality household cleaner may be used on all painted
surfaces and the front panel. Do not spray the cleaning fluid directly on
any surface, especially the area where the fans and heat sinks are located.
The liquid will harden dust particles and cause an accumulation of dust to
be imbedded into the heat sinks and make removal very difficult. Instead,
a soft cloth should be sprayed with the cleaning solution and the cloth
should be used to transfer the solution to the surface of the instrument.
Dust and dirt will accumulate with time in the small gaps of the air heat
sinks and around the blades of the fans. These deposits will affect the
cooling effectiveness of the thermoelectric cells and will ultimately affect
the ability of the bath to go to cold temperatures. The easiest and most
effective way to clean these heat sinks and fans is by using a compressed
air source and blowing the dust away. This should be accomplished by
moving the upper Bath Vessel Assembly outside or away from any clean
environment, apply the blasts of clean air through the fans on the sides
CANNON
®
TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON
2139 High Tech Road • State College, PA 16803 • USA
MAINTENANCE
®
Instrument Company
31
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