INFICON TM-400 Thin Film Deposition Monitor - Manual (Page 13)

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TM-350/400 Operating Manual
Chapter 1
Safety Precaution and Preparation for Use
1.1 Input Power Requirements
The TM Series Thickness Monitor can be set to operate one of the following line
voltages: 100, 120, 200, or 240 V(ac) at line frequency of 50 or 60 Hz. Maximum
power consumption is 25 watts. See
section 4.2.6 on page 4-2 for instruction on
how to select the line voltage.
1.2 Power Entry Module
The AC (alternating current) power entry module, located in the rear panel of the
TM, provides connection to the power source and a protective ground. It also holds
the fuses and the voltage selection wheel.
1.3 Power Cord
WARNING - Risk Of Electric Shock
To avoid electrical shock, always connect the power cord
to an AC outlet which has a proper protective ground.
The TM Series Thickness Monitor comes with a detachable, three-wire power cord
for connection to a power source with protective ground. The TM chassis is
connected to the power ground to protect against electrical shock. Always connect
to an AC outlet which has a properly connected protective ground. If necessary, or
when in doubt, consult a certified electrician.
1.4 Grounding
A grounding lug is located on the rear panel, near the power entry module. Use
heavy ground wire, wire braid, or copper strap of #12 AWG or larger to connect this
grounding lug directly to a facility protective earth ground to provide additional
protection against electrical shock. See
Figure 4-3 on page 4-10 .