Section 3 - Installation; Compressor Installation; Preparing The Compressor Input-Power Cable - HELIX 8200 Operating And Service Instructions

8200 Compressor

Compressor Installation

Preparing the Compressor Input-Power Cable

P/N 8040353

Section 3 - Installation

Installation of your compressor requires no special tools other than those
supplied in the Installation and Scheduled Maintenance Tool Kit.
To supply input power to the 8200 compressor requires the fabrication of a
600-volt power cable that has an SO-4 conductor, 600-volt rating neoprene
jacket and 14-gauge or 2.3 mm
Do not connect the compressor to the power source at this time. All of
the preparation must be completed and all panels reinstalled before elec-
trically connecting the compressor.
Unit must be wired by an authorized electrician in accordance with the
national Electrical Code, ANSI/NFPA 70-1987, as well as the local
codes. This shall include installation of a readily accessible disconnect
device into the fixed wiring supplying power.
An insulated earthing conductor that is identical in size, insulation mate-
rial and thickness to the earth and unearth branch circuit supply conduc-
tors, except that it is green with or without one or more yellow stripes is
to be installed as part of the branch circuit which supplies the unit or sys-
tem. The earthing conductor described is to be connected to the earth at
the service equipment, or supplied by a separately derived system at the
supply transformer or generator.
1. Prepare the input power cable by terminating each of the four
conductors with a #10 ring terminal. Follow the terminal
manufacturer's instructions to insure proper crimping.
2. Disassemble the electrical terminal enclosure cover, mounted on
the compressor rear panel, as shown in Figure 3-1. Remove the two
screws securing the cover and lift it off.
3. If necessary, back off strain relief screws.
2
wire. Proceed as follows:
WARNING
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C TI CRYOGENICS
HELIX TECHNOLOGY CORPORATION
3-1