Anest Iwata MSU-323 C, Use And Maintenance Instruction Manual, Page: 16 / 32

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6.4 PREWASH AND ADJUSTMENT OF UPPER PACKING
1. Make sure the pump has been properly installed; (see point 5.2)
2. Immerse dip tube (pos. 5 on page 26) in the cleaning liquid (clean solvent or water, according to
the purchased model).
3. Place the ball valve (pos.3-8 on page 27 and 28) in the proper position.
4. Open the recirculation valve (pos. C in pic. 2 on page 14) located on the paint filter.
5. Loosen the upper gaskets adjusting cup (pos. D in pic. 2 on page 14).
6. Gradually open the air pressure regulator up to the minimum pressure required for the straight
and alternate movement of the pump (about 0.5 bar).
7. Adjust the upper gaskets by gradually tightening the adjusting cup (pos. D in pic. 2 on page 14)
until stopping the cleaning liquid outflow, and the pump movement.
NOTE: The failure to observe this point as well as an improper initial adjustment of the
gaskets might reduce their duration.
8. Once the gaskets have been adjusted, increase the air supply pressure (up to about 2 bar) and
let the cleaning liquid flow in the recirculation hose for a few minutes.
9. Close the recirculation valve (pos. C in pic. 2 on page 14), clean the paint hose and the gun by
keeping its trigger pulled.
10. Once you are sure the cleaning has been properly carried out, lift the dip tube from the vessel
containing the cleaning liquid and let the residual liquid flow out of the gun first, and then from
the recirculation hose.
WARNING
THE PUMP MUST BE CLEANED BEFORE USING IT FOR THE FIRST TIME, IF IT IS NOT USED
FOR A LONG TIME AND AFTER ANY COLOUR CHANGE.
6.5 STARTING UP
Before beginning working, start the pump by following the instructions below:
1. Dip the dip tube in the tank with the product to be pumped.
2. Open the two-way valve for paint recirculation (pos. C in pic. 2 on page 14).
3. Lift and gradually turn the pressure reducer knob (3-2 on page 27 and 28). Adjust it at a pressure
slightly higher than 2.0 bar, to enable the pump to release the air.
4. Close the two-way valve for paint recirculation (pos. C in pic. 2 on page 14) and release the air
through the gun, as well.
5. Increase the pressure of the reducer connected to the pump, according to the desired working
pressure.