CKD FP Series Manual page 11

NS-QFS
Series
Piping
CAUTION
Always pipe before starting wiring, mount the booster.
Align the fluid flow direction to the direction indicated
on the product when connecting the pipes.
Do not install the regulator/solenoid valve, etc., immediately
before this product. Generated drift may cause errors.
Before installing the piping, clean out the pipes using an air
blower to remove all foreign matter and cutting chips from
the pipes. The rectifier or sensor chip could be damaged if
a large amount of foreign matter, cutting chips, etc., enters.
Make sure that the leakage detection solution does
not enter the inside of this product when inspecting
the pipe for leaks.
This product is exclusively for nitrogen gas
extraction unit system type NSU. When piping,
provide modular connection with our products.
Mounting
CAUTION
The LCD display flow rate meter uses a liquid crystal display.
This may be difficult to read depending on the angle.
Wiring
DANGER
Use power supply voltage and output within the specified
voltage.If voltage exceeding the specified voltage is applied, the
sensor could malfunction or be damaged, or electrical shock or
fire could occur. Do not use any load that exceeds the rated
output. Otherwise, output may result in damage or fire.
Stop the controls and machine devices and turn power
OFF before wiring. Starting operation suddenly could
cause unpredictable and dangerous operation. Conduct
an energized test with controls and machine devices
stopped, and set target switch data.Be sure to discharge
any accumulated electrostatic charge among personnel,
tools, or equipment before and during work.
WARNING
I nstall the product and wiring as far away as possible from
sources of noise such as power distribution wires. Provide
separate countermeasures for surge applied to the power
cable. The display or output could fluctuate.
399
Mounting/Installation/During adjustment
Do not short-circuit the load. Failure to observe this
could result in rupture or burning.
Check wiring insulation.
Check that wires do not come into contact with other
circuits, that no ground faults occur, and that the
insulator between terminals is not defective.
Overcurrent could flow in and damage the sensor.
Check line color when wiring. As incorrect wiring could
result in sensor damage and malfunctions, check wire
color against the instruction manual before wiring.
Use a stabilized DC power supply within the specified
rating, insulated from the AC power supply. A non-isolated
power supply could result in electrical shock. If power is not
stabilized, the peak value could be exceeded. This could
damage the product or impair accuracy.
The power supply is a DC stabilized power supply completely isolated
from the AC primary side. Connect either the + side or - side of the
power to the FG. Connect either the + side or - side of the power to the
F.G. Between the internal power circuit and the product's housing, a
varistor (limit voltage approx. 40 V) is connected to prevent dielectric
breakdown of the sensor. Disconnect wiring first if this testing is
required. Disconnect wiring first if this testing is required. An excessive
potential difference between the power supply and product housing will
burn internal parts. After installing, connecting and wiring the unit,
electrical welding of the device/frame, short-circuit accidents, etc.,
could cause welding current, excessively high voltage caused by
welding, or surge voltage, etc., to run through the wiring, ground wire,
or fluid path connected between the above devices, damaging wires or
devices. Conduct any work such as electrical welding after removing
this device and disconnecting all electric wires connected to the F.G.
Do not use this product at levels exceeding the power supply
voltage. If voltage exceeding this range or AC power is applied,
the controller could rupture or burn.
Check that stress (7N and over) is not directly
applied to lead wire.
During adjustment
CAUTION
If switches are operated when fluid is not stable,
such as pulsating, operation may be unstable.
Avoid setting switches in an unstable area, and
confirm that switch operation is stable before use.