Fisher 4195 KB Series - Proportional Band Adjustment and Set Point Beam Assembly Details; Proportional Band and Set Point Beam Details Diagram; Assembly of Proportional Band Adjustment Components

4195KA, KB, and KC Series
5–7
E-RING
(KEY 27)
RETAINING CLIP
(KEY 26)
PROPORTIONAL
BAND ADJUSTMENT
(KEY 25)
ADJUSTABLE
SET POINT
PIVOT ASSEMBLY
(KEY 17)
SET POINT
BEAM ASSEMBLY
(KEY 23)
SET POINT
BEAM SHOE
(KEY 29)
PLASTIC
WASHER
(KEY 22)
NOZZLE
ASSEMBLY
(KEY 21)
O-RING
SCREW
(KEY 19)
WASHER
(KEY 20)
RELAY
NOZZLE TUBING
ASSEMBLY
(KEY 18)
CAP
PLASTIC
WASHER
EXPLODED VIEW
ASSEMBLED VIEW (CONTROLLER REMOVED FROM CASE)
FLAPPER
RETAINING
CLIP
E-RING
CAP
PROPORTIONAL
BAND
ADJUSTMENT
KNOB
SET POINT BEAM
BIAS SPRING
SHOE
ADJUSTMENT
SCREWS
SET POINT
BEAM ASSEMBLY
SET POINT
BEAM SHOE
LINK 3
RELAY NOZZLE
TUBING ASSEMBLY
W4194 / IL
W4193 / IL
Figure 5–3. Proportional Band Adjustment and Set Point Beam Details
necessary, clean it. Also, inspect the plastic washers
and, if necessary, replace them.
15. Inspect the nozzle assembly O-ring (key 24) and,
if necessary, replace it.
Assembly
16. Apply a suitable lubricant, such as key 318 or
equivalent, to the set point beam assembly; then posi-
tion a plastic washer (key 22) and the proportional
band adjustment knob (key 25) on the set point beam
assembly (key 23) as shown in figure 5–3.
17. Position the retaining clip (key 26) on the three
posts on the proportional band adjustment knob.
18. Place the second plastic washer on the nozzle
assembly. Apply a suitable lubricant, such as key 317
or equivalent, to the nozzle assembly O-ring.