Orion Instruments Atlas - Manual (Page 9)

46-638 Magnetic Liquid Level Indicators 9
1. Locate specific power specification and wiring diagram
supplied with unit.
2. Provide appropriate conduit and wiring to the unit.
3. Apply sufficient operating power.
4. Verify that unit will generate sufficient heat and maintain
proper temperature.
NOTE: Wiring diagrams are supplied with units manufactured with
this option.
1.8.3.2 Units with an adjustable “bulb-type” thermostatic
switch
With an adjustable “bulb-type” thermostatic switch, the
temperature may be preset at the factory, however field
personnel should verify this setting during installation. A
wiring harness, or optional junction box with terminal
strip will be available to accommodate field wiring.
NOTE: For supply connections, use wire with a minimum rating of
+167° F (+75° C) as required by process conditions. Use a
minimum of 14 AWG wire for power and ground field wires.
NOTE: Housing must be grounded via protective ground screw in the
base of the housing.
NOTE: It is the responsibility of the customer to comply with applica-
ble installation codes and practices. Class I, Division 1 loca-
tions may contain explosive gas mixtures. Appropriate
precautions must be taken. Installation should be performed
by qualified personnel.
1. Locate specific power specification and wiring diagram
supplied with unit.
2. Provide appropriate conduit and wiring to the unit.
3. Verify thermostat setting. Adjust, if necessary.
4. Apply sufficient operating power. Circuit breaker should
be a GFI (ground fault interrupter) type with maximum
30 mA ground leakage current trip setting. GFI should
be sized at 125% of rated load.
5. Verify that unit will generate sufficient heat and maintain
proper temperature.
NOTE: Wiring diagrams are supplied with units manufactured with
this option.
Caution: In hazardous areas, do not power the unit until the conduit
is sealed and the enclosure cover is screwed down securely.