© Arun Microelectronics Ltd 2020. All rights reserved
Page 9
4.
Installation
Checks on receipt of the instrument
On receipt of the instrument remove all packing material and check that all items on the shipping list have been received.
Report any damage or shortages to the Company or the Distributor who supplied the instrument. The packing material has
been specifically designed to protect the instrument and should be retained for possible future use.
4.1.
Instrument installation
Mounting
The instrument is suitable for mounting in a standard 19
″
rack and occupies 1U (1.75
″
, 44.45 mm) of the rack. The
mounting holes in the front panel are intended for retaining the instrument in the rack and will not support its weight.
Additional support is required toward the rear and various arrangements are provided by rack manufacturers for this
purpose.
Cleaning
If the instrument requires cleaning, wipe it down with a cloth slightly dampened with water or a mild detergent.
Ventilation
The instrument is forced air ventilated through grilles on the sides and a vent in the rear panel. Mount it in a location where
there is an adequate supply of air as close as possible to cool room ambient temperature. The instrument is tolerant of
and is compensated for operation at elevated ambient temperatures up to 40°C. Long term accuracy and reliability will be
enhanced by operation at the lowest possible temperature, within the operating temperature range. If there are other
instruments in the rack which generate significant amounts of waste heat, try to ensure that this is deflected away from this
instrument.
Line Power Connection
The NGC3 operates from a 100 to 240 volts nominal AC power source having a line frequency of 48 to 65 Hz. Use a three-
wire power cord to connect to a properly grounded wall outlet.
Line Fuse
There is a line fuse (Rating: 2.0 A, 250 V, (T)) located on the inside of the instrument on the rear of the power inlet
connector.
High voltages are present within the instrument when operating and for some seconds
after switching off. Remove the mains lead before removing the cover for any reason.
The top cover is connected to the enclosure with a wire to ensure earth continuity. Do
not remove this wire, ensure it is intact before replacing the lid, taking care to avoid
pinching the wire between the lid and enclosure base.
Grounding
The instrument earth stud (right side when viewing the rear panel, and identified by the
symbol) must be connected directly to the vacuum system earth distribution point with
a low-impedance strap/cable (
≥
4mm
2
or
≤
12 AWG). There must be no ferrite
components installed on it.
Summary of Contents for NGC3
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