Iuser Connections; Electrical Power Connections; Calibration Gases - Teledyne 7120 Operating Instructions Manual

2 Installation
surface. When installed as a system with enclosure (non-panel or rack mounted)
a waterproof mastic should be liberally applied to the under surfaces of all
supporting legs of the cubicle system before placing it in position and bolting it
in place. Do allow enough space in front of the enclosure to swing the door open
(a 16 1/4 radius as shown on Fig. 2-1).
Figure 2-1: Required Front Door Clearance
2.2.1 User Connections
All user connections are made via cables which enter the
explosion-proof housing through ports on its side. No conduit fittings are
supplied. The installer must provide two 3/4" NPT and two 1" NPT adapters
and the appropriate sealing conduit.

2.2.2 Electrical Power Connections

The standard power requires a supply of 100-125VAC, single-phase
power. Power connections are made inside the alalyzer at the properly labeled
strip terminal. Refer to the input-output diagram for more information. The
electrical power service must include a high-quality ground wire. A high-
quality ground wire is a wire that has zero potential difference when measured
to the power line neutral. 220 or 240 VAC, 50/60 Hz power is optional. Check
the analyzer input-output diagram, power schematic, outline, and wiring dia-
grams for incoming power specifications and connecting points.
Warning: Primary power to the system should not be supplied until
all customer wiring is inspected properly by start-up personnel.

2.2.3 Calibration Gases

The system may require a supply of clean, oil and particulate free air for use
as zero gas.
2-2
Teledyne Analytical Instruments
Model 7120