4
1)
Install the hose union and material hose (separately available) to
the material discharge port (Rc3/4) of the pump. Tighten the hose
union with a spanner so as not to make the material hose loose. In
this case, wind the seal tape that is available on the market
around the male screw of the hose and then screw it.
2)
Install a valve between the end of the hose and the piping. (Fig. 4)
3)
Be sure to install a relief valve so that leak may not be caused to
the piping or damage may not be given to the hose connecting
portion by the liquid pressure increased by temperature changes
in the piping. The relief valve should be installed near the pump.
3.5 Air Connection
1)
Install the air regulator (separately available) at the air supply port of the pump. The dedicated air
regulator is available as the standard product. Please use it.
2)
Connect the air hose from the compressor to the IN side of the air regulator.
CAUTION
- Be sure to install the air regulator at the air supply port for the safe use of the pump.
(The air regulator consists of a reducing valve and a pressure gauge.)
<NOTE>
- When air is supplied to the air hose, the pump is in operation.
Before connecting the air hose, be sure to turn the knob of the air regulator counterclockwise to reset
the pointer of the pressure gauge to “0”.
- Using the air regulator permits adjusting the supply air pressure to the pump and reducing the
wasteful motion of the pump, with the result that the operability is improved and the pump life is
extended.
Regarding the method of adjusting the air pressure with the air regulator, the pressure is increased
by turning the knob clockwise (the pointer of the pressure gauge gradually raises from “0”) and
reduced by turning it counterclockwise (the pointer of the pressure gauge goes back to “0”).
In the normal operating status, the pointer of the pressure gauge should be at 0.3 - 0.5 MPa.
3.6 Connecting the ground wire
WARNING
- Make ground connection when working with flammable material or in explosive atmosphere.
Rapid pumping of material can result in static electrical charge. Also, be sure to provide proper
ventilation where a flammable atmosphere may exist.
1) When installing the pump, be sure to connect the ground
wire at the specified position.
2) Also connect ground wires to peripheral equipment and piping.
3) Use 2.0mm
2
minimum ground wire.
Pump
Piping
Valve
Material
hose
Air hose Air regulator
Fig. 4
Position for connecting the ground wire
