JUKI FX-3R MAINTENANCE GUIDE.pdf - 第109页

FX-3R Maintenance Guide 9-4 9-3. Replacing the Digital Pressu re Switch (Negative Pressure) 1) Make sure that the vacuum pump is not functioning. 2) Remo ve the screws (2 locations) to open the cover SB_A (open/close cov…

FX-3R Maintenance Guide

9-3

9-2. Replacing the Filter Element

1) Turn the filter element main unit 45( clockwise or counterclockwise to pull it out downward while

lowering the slide part.

2) When replacing the filter element B on the air filter side, turn the resin part fixing the filter

element B counterclockwise to detach it.

3) When replacing the filter element on the micromist separator side, turn the filter element

counterclockwise to detach it.

4) Reassemble the components in the reverse order of disassembly.

CAUTION Before replacing the filter element, always close the knob of the finger valve.

The filter element must be replaced when it has been used for two years or when

pressure drop reaches 0.1 MPa (1kgf/cm

Air filter Micromist separator

PF901006000

Filter element

PF901010000

Filter element

Resin part

Slide part

Figure 9-2-1 Filter Element

Rev. 1.00

FX-3R Maintenance Guide

9-4

9-3. Replacing the Digital Pressure Switch (Negative Pressure)

1) Make sure that the vacuum pump is not functioning.

2) Remove the screws (2 locations) to open the cover SB_A (open/close cover).

3) Disconnect φ6-air tube and connector from the digital pressure switch.

4) Detach the digital pressure switch with the fixing

resin on the back of the bank pressure bracket C

kept pushed.

5) When mounting a new vacuum meter,

reassemble the components in the reverse order

of disassembly.

Cover SB_A

Figure 9-3-1 Cover SB_A (Front Side)

40047090

PRESSURE SWITCH

Resin fixing part

Bank switch bracket C

Figure 9-3-2 Digital Pressure Switch

9-3-1. Adjusting the Digital Pressure Switch (Negative Pressure)

After the digital pressure switch has been replaced, make the setting as shown below.

Threshold value of pressure switch: −60.0kPa

Hysteresis: 0.50kPa

Display color mode: Green when the pressure switch is turned OFF.

Operation mode: Hysteresis mode

Pressure switch output form: Normally open

(Turned ON when the value is the threshold value or more.)

Response time: 2.5ms or less

Auto preset setting: Manual setting

Follow the steps to make the setting.

Rev. 1.00

FX-3R Maintenance Guide

9-5

[U] button [V] button

[LED] panel

[SET] button

Figure 9-3-1-1 Digital Pressure Switch

1) Setting the display mode and hysteresis mode

c Keep the

button pressed for 2 sec. or longer. The display will become . (The

operation enters the display color setting mode.)

d Press the

or button to display . After that, press the button.

(When the switch is turned ON, this is displayed in green.)

e Press the

or button to display . After that, press the button. (The

operation enters the hysteresis setting mode.)

f Press the

or button to display . After that, press the button. (The

normally open operation is set.)

g Press the

or button to display . After that, press the button. (The

response time is set at 2.5 ms or less.)

h Press the

or button to display . After that, press the button. (The

manual set mode is set.)

i The numeric value is displayed in this step, and then the operation is returned to the

measurement mode.

2) Setting a detection level (threshold value and hysteresis)

c In the measurement mode, press the

button. and current threshold value are

displayed alternately.

d Press the

or button. The numeric value at the least significant digit starts flashing.

Subsequently, press the

or button to increase or decrease the numeric value.

e When pressing the

button, the flashing digit moves left.

f Perform operation steps d and e to display

. Keep the button pressed for 2

sec. or longer. (The threshold value is then set to “−60.0kPa”.)

and current set value are displayed alternately. Press the button.

and current hysteresis value are displayed alternately.

i Press the

or button. The numeric value at the least significant digit starts flashing.

Subsequently, press the

or button to increase or decrease the numeric value.

j When pressing the

button, the flashing digit moves left.

k Perform operation steps h and j to display

. Keep the button pressed for 2

sec. or longer. (The hysteresis value is then set to “0.50kPa”.)

l The operation is then returned to the measurement mode. The settings are then completed.

Rev. 1.00