TE Technology TCA - Manual (Page 22)

TE
TECHNOLOGY, INC.
22/22
http://www.tetech.com email: [email protected]
Operation
Review the TCA product specification sheet and verify that the input voltage to
the TCA is appropriate. Verify that the power supply used with the TCA can
provide sufficient current. Use direct current only; do not use alternating current
unless otherwise specified by the TCA.
Be sure to follow the instruction manuals for the power supply and any
temperature controller used with the TCA.
Check for proper electrical connections. If you notice discoloration or abnormally
high operating temperatures on the wires and/or connectors, de-energize the
TCA and rectify the fault before re-energizing the TCA.
If using a temperature controller that provides pulse-width modulated output to
the thermoelectric (Peltier) modules, the pulse-width modulation frequency
should be between 300 Hz and 3,000 Hz.
Use analog output to power the TCA fans; do not use pulse-width modulated
output unless otherwise specified by the TCA specification sheet.
The actual TCA performance may vary by +/-10% from that shown in the TCA
specification sheet. Furthermore, specifications are based on the assumption of
unrestricted airflow to the fans and from the heat sink and cold sink (as
applicable to the TCA). It is further assumed that the TCA operates in standard
air and barometric pressure (101 kPa). Consult TE Technology, Inc. if the TCA is
to operate with some known airflow restriction and/or the TCA is to operate in a
non-standard gas and/or pressure.
While in operation, look for any non-operating fans or unexpected changes in fan
speed. If non-operating fans or unexpected fan speed changes are found, de-
energize the TCA and inspect for improper electrical connections, failed or failing
fans, or unexpected air restrictions. Do not re-energize the TCA until the fault has
been rectified.
If you are using a custom TCA where fan(s) are not provided as part of the
assembly, be sure that the method you have chosen for dissipating waste heat is
adequate and operating correctly.
Review the frequently asked questions (FAQ & Technical information) and other
related documents posted at
http://www.tetech.com .
Consult TE Technology if additional clarifications are needed.