CHAPTER 4
TELEVAC
Installation and Operation
Instrument Installation
The MC300 is pre configured for immediate installation and use. The unit should be first
mounted in the desired location and properly secured. In choosing a location, the display
should be clearly visible by an operator and positioned in such a way that the operator
can easily make adjustments to the instrument. All wiring should be neatly dressed and
bundled with special care not to have any wiring adjacent to AC power distribution. After
proper installation of sensors and wiring, the unit can be connected to an AC power
source and put into operation.
IT IS RECOMMENDED THAT POWER IS NOT APPLIED TO THE INSTRUMENT
DURING THE INSTALLATION OF ANY WIRING AND SENSORS.
Sensor Installation
It is desirable that the thermocouple and cold cathode sensor tubes be mounted on the
vacuum system in a VERTICAL POSITION open end extending downward. The 4A
convection sensor
MUST
be installed in the VERTICAL POSITION.
The electronic unit is factory calibrated at time of order. To ensure proper operating
conditions
it is necessary to use factory-manufactured cables
.
Contamination of thermocouples sensor can be caused by the process occurring in the
vacuum vessel, or by pump fluid back streaming and is a critical factor affecting the
measurement of high vacuum.
Depending upon the degree of contamination and the accuracy required, it is
recommended that sensor be periodically replaced and that filters (with line of sight
baffles (P/N 2-2100-50) be used to protect thermocouple sensors.
Phone:(215) 947-2500 fax:(215) 947-7464 e-mail: [email protected] web site:www.televac.com
6-8000-002 REV A
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