American Magnetics 286 Multi-Sensor Liquid Level Instrument (CE-Marked) - Manual (Page 28)

14
Installation
Valve installation
2.6 Installing the Optional Solenoid-operated Fill Valves
Install each solenoid-operated fill valve by connecting the valve power
cable to the AC controller output receptacle on the rear panel of the
instrument (refer to the rear panel layout illustrated on page 4). The
standard AMI supplied valve has a 9/32 inch orifice and the input and
output are tapped for 3/8 NPT. Setting the FILL function to AUTO should
be avoided until the channels have been assigned and the setpoints have
been specified. See the Operation section for details on assigning channels,
specifying setpoints, and selecting the fill modes for the AC output
receptacles.
Note
When using the pre-cool mode, AC output 1 must be connected to the
fill valve and AC output 2 must be connected to the vent valve.
Caution
When using a solenoid-operated control valve with the Model 286,
ensure the valve is configured for the operating voltage and line
frequency of the Model 286. Failure to do so will result in faulty
operation and may also result in valve damage.
Warning
Before touching any of the controller output receptacle terminals or
touching the wiring connected to these terminals, remove power to
the instrument by unplugging it or turning the power switch to the
off position.
The controller output receptacle supplies hazardous AC line voltage
potentials. It is for use with equipment which has no live parts
which are accessible. Conductors connected to its terminals must be
insulated from user contact by reinforced or double insulation
capable of withstanding 4250 V (impulse) for a 240 VAC Category II
installation, or 2550 V (impulse) for a 120 VAC Category II
installation.
This instrument is designed for operation from a single-phase power
source for maximum safety. The controller output receptacle
circuitry only switches the “line” (“hot”) connection to the AC mains.
If two-phase power is applied, any equipment connected to the
controller output receptacle conducts hazardous AC voltage even
when the controller output receptacle is not energized.