<5. Maintenance>
5-3
IM 02M04B01-01EN
5.6 To Clean Nozzle
1. Remove screw and washer assembly.
2. Pass O.D 0.13 mm wire through opening into
nozzle.
3. Replace parts tightening screw securely.
5.7 Controller Identification
When consulting Yokogawa, always submit
controller model and serial numbers found on data
plate.
F0509.ai
Measurement Element
Range and Serial Number
Data plate
5.8 To Remove Measurement
Pointer or Set Point Index
Pry lower end of pointer over stud, and slide up.
Replace in reverse order.
5.9 To Remove Control Unit
CAUTION
Before tubing is disconnected for removal of
control unit, carefully note arrangement of
tubing, and identification of tubing at points of
disconnection. A convenient place to disconnect
tubing is at junction of gray and black tubing.
1. Remove set point index and measurement
pointer.
2. Remove the two mounting screws.
3. Disconnect measurement link (and remote set
link, if present). Note hole that link is in.
2
3
Link inside control unit
(see note below).
F0511.ai
4. If controller has derivative assembly, it will be
helpful to remove this assembly. Remove the
two small Phillips head mounting screws.
5. Carefully lift up control unit. Break tubing
connections where required; see caution note
above.
6. Replace parts in reverse order of removal. It is
essential that tubing be reinserted into case as
close as possible to its original arrangement.
Tubing must not be pinched.
