7. As shown in Figure 2: Install the return pipe.
8. Put the suction tube and the return tube into the container.
9. Turn on the power switch，Return valve is now in a state vertically
upwards，The pressure regulating knob is at the maximum position at
this time，Water will drain out of the return pipe.
10. Turn the return valve clockwise to horizontal. At this time the
machine starts to pressurize. The pressure gauge pointer shows about
3000psi（at the same time, the motor stops working）.
11. Trigger the spray gun to start spraying，At this time the motor starts
to work，The pointer of the pressure gauge is kept at about 2000 psi.
TIPS
1. Pressure regulating valve：Adjust the pressure regulator clockwise to
pressurize the machine.
2. Backflow valve：Backflow valve vertically upward: the machine is in
the backflow state（Release the pressure state）; The backflow valve is
adjusted to the horizontal in a clockwise direction: the machine is
working（Increase the pressure state）.
3. Question: What kind of oil does the 450 plunger sprayer use?
Answer: Any oil with lubricating effect is fine.
4. When do I need to add oil and how much oil do I need to add?
Answer: Before using the machine each time, you need to add about
5 drops of lubricating oil to the oil filler port.
5. What kind of material can be sprayed by the 450 plunger sprayer？
Answer: non-particle free material with good fluidity.
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