INFICON MDC-360C Thin Film Deposition Controller - Manual (Page 111)

MDC-360C DEPOSITION CONTROLLER
CONTROLLER INSTALLATION 8-1
8. CONTROLLER INSTALLATION
8.1 MOUNTING
The MDC-360C is intended for rack mounting. For maximum operating ease it
should be mounted at approximately eye level. If the MDC-360C is mounted in a
rack containing other heat generating equipment, care should be taken that there is
adequate ventilation to assure that the ambient temperature does not exceed the
MDC-360C’s ambient temperature rating.
8.2 PROPER GROUNDING
The MDC-360C was designed for maximum noise immunity and in most cases
will require no special grounding precautions. In the event that noise sensitivity is
noted in unusually noisy environments, more attention to proper grounding may
be required. It is important that the rack in which the MDC-360C is mounted is
tightly grounded to the vacuum station. This grounding is best accomplished by a
multipoint mechanical connection through the structure itself or through
grounding straps. Grounding straps should be as wide as practicable preferably a
1 inch wide copper sheet or braid.
A small diameter copper conductor does not create an effective ground.
Although the D.C. resistance measured with such a connection may be low, the
inductance can be high allowing rapidly changing currents to create large
potential differences over the length of the ground wire. Multiple current paths
significantly reduce the inductance, and since the inductance of a conductor is
inversely proportional to its radius, wide straps will have the lowest inductance.
In particularly noisy environments it is desirable to ground the MDC-360C to the
rack frame, or other good ground, by means of a grounding strap connected to the
grounding lug provided on the rear panel (See Figure 8-11).
8.3 EXTERNAL CONNECTIONS
Most external connections are made through the rear panel (See Figure 8-3). The
Remote Power Handset connector and a temporary RS-232 connection are,
however, located on the front panel (Figure 8-2).
8.3.1 POWER
WARNING: To avoid electrical shock, always connect the power cord to an
AC outlet which has a proper protective ground.
The power receptacle is an internationally approved type. A fuse, voltage
selection board and RFI filter are part of the power receptacle assembly. The
power plug must be removed to change the fuse or the voltage selection board
position.