2 replacing the controller relay, 3 replacing the amplifier assembly, Replacing the controller relay -2 – Yokogawa PK200 User Manual

Page 24: Replacing the amplifier assembly -2

Advertising
background image

IM 21B03D01-01E

6-2

6. MAINTENANCE

Screen filter

F0604.EPS

Figure 6.4 Removing the Screen Filter (IN Side)

6.3.2 Replacing the Controller Relay

(1) Set the air supply pressure to zero.

(2) Remove the controller relay from the bottom of the

converter.
Unscrew the two mounting screws on the lower
front face of the converter main body (see Figure
6.5) using a Phillips screwdriver. The relay can be
removed downward.

(3) When installing a new relay, attach the relay to the

bottom of the converter, then fasten the relay using
the two mounting screws at the front face of the
converter.

Control relay

F0605.EPS

Figure 6.5 Removing the Control Relay

6.3.3 Replacing the Amplifier Assembly

An amplifier for replacement comes with a tube and
four set screws.

Removing the Amplifier

(1) Turn off the power and set the air supply pressure

to zero.

(2) Turn the amplifier cover counterclockwise to

remove it.

(3) Adjust the zero adjustment control to the position

indicated in Figure 6.6.

F0606.EPS

Closeup of zero adjustment

Zero adjustment screw

Zero adjustment

Figure 6.6 Zero Adjustment

(4) Remove the silicon tube (a) from the pressure

sensor on the amplifier.

(5) Remove the four set screws (b) for fixing wires on

the amplifier and then disconnect the wires.

(6) Remove the four set screws (c) for fixing the

amplifier.

F0607.EPS

(a)

(a)

(c)

(b)

(b)

(b)

(b)

(c)

(c)

(c)

Figure 6.7 Pressure Sensor and Amplifier Set Screws

Advertising