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4. How to Operate the Pump
- The supply air pressure to the pump should be 0.7 MPa or less. Do not raise the
pressure over 0.7 MPa in any case.
- Never bring the face close to the exhaust port of the pump that is in operation.
The material is discharged under high pressure, so water may congeal and injury may
be caused by ice.
- If the air supplied to the pump is not shut off after completion of the work or at night,
the hose may be damaged or leak may occur on the valve or gun, thereby causing a
secondary accident. This secondary accident shall be attributable the user's
responsibility.
- If the pump goes to a malfunction or into an operation stop status, do not disassemble
the pump carelessly but refer to the item pertaining to <Troubleshooting and
Corrective Measures> on P 6. Judge the status properly and do not disassemble
any component other than the component that needs to be assembled.
[NOTE]
● After completion of the work or when the pump is not operated for a long time, shut off the
air to stop the supply air to the pump and open the discharge port valve to reduce the
internal pressure of the pump and hose.
● If the oil in the drum can has be exhausted, the pump is operated at a higher speed
without oil and has an adverse effect on its life. Stop the pump operation at once and
replace the drum can with a new one. For replacing the drum can, observe the item
pertaining to <Installing the Drum-Pump> on P 2.
● The distance for pressure feed differs depending on the viscosity, temperature, and
required flow rate of oil. Regarding details, please ask Yamada Corporation or the dealer
for further information.
1) Turn the knob of the air regulator clockwise to supply air into the pump. When the supply
air pressure reaches 0.15 to 0.20 MPa, the pump starts to operate.
pressure is indicated by the pointer of the pressure gauge.
2) When air is supplied, the pump is operated for a while to fill the hose, pipe, and gun with
grease, and then stopped automatically. If the pump is continuously operated without stop,
leak may have occurred in any connecting portion of the hose, pipe or gun. Stop the air
supply and make a check.
3) Oil is discharged by operating the gun lever at the end of the material hose. When the
lever is pulled, the valve is opened and the pump is automatically operated to discharge
oil.When the lever is reset, the valve is closed to stop the oil discharge and the pump is also
stopped.
4) Adjust the supply air pressure according to the application. Usually, the operating
pressure should be 0.3 to 0.5 MPa. In particular, when the pump is used for feeding oil,
the discharge volume differs depending on the piping length and oil viscosity. Adjust the
supply air pressure to your desired level.
5) After completion of the work, be sure to stop the supply air to the pump.
CAUTION
5
The supply air
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