Emerson Fisher C1 Instruction Manual page 35

Instruction Manual
D103292X012
Figure 18. Reverse/Direct Acting Tubing Connections for Proportional Controllers or Transmitter
PROPORTIONAL TUBING
RELAY TUBING
(KEY 24)
FLAPPER/SCREW
(KEYS 40 AND 46)
REVERSING
ACTING
POSITION
GE28263-B
RESET VALVE
(KEY 256)
RELAY TUBING
(KEY 24)
FLAPPER/SCREW
(KEYS 40 AND 46)
REVERSE ACTING
POSITION
REVERSING BLOCK
(KEY 37)
GG15992-1
3. Locate the two bellows (key 52), the proportional band assembly (see figure 18), and the reversing block (key 37).
4. Disconnect the tubing (refer to figure 18):
a. For a proportional-only controller or for a transmitter, disconnect the proportional tubing (key 25) from the
mounting base and reconnect them on the opposite side.
b. For a proportional-plus-reset controller, disconnect the proportional tubing (key 27) and reset tubing (key 27)
from the mounting base and reconnect them on the opposite side.
5. Invert the proportional band assembly (refer to figure 17):
a. Turn the proportional band adjustment knob (key 73) to 10.
(KEY 25)
PROPORTIONAL
BAND ASSY
BELLOWS
(KEY 52)
REVERSING BLOCK (KEY 37)
NOZZLE (KEY 54)
REVERSE ACTING
TO CHANGE ACTION OF THE CONTROLLER, REPOSITION THE PROPORTIONAL TUBING,
REVERSING BLOCK/NOZZLE AND PROPORTIONAL BAND ASSY AS SHOWN ABOVE
PROPORTIONAL-ONLY CONTROLLER OR TRANSMITTER
RESET TUBING
(KEY 27)
PROPORTIONAL TUBING
(KEY 27)
PROPORTIONAL
BAND ASSY
BELLOWS
(KEY 52)
REVERSE ACTING
PROPORTIONAL-PLUS-RESET CONTROLLER
PROPORTIONAL TUBING
RELAY TUBING (KEY 24)
REVERSING BLOCK (KEY 37)
NOZZLE (KEY 54)
DIRECT ACTING
POSITION
FLAPPER/SCREW
(KEYS 40 AND 46)
RESET VALVE
(KEY 256)
RELAY TUBING
(KEY 24)
REVERSING BLOCK
(KEY 37)
DIRECT ACTING
POSITION
FLAPPER/SCREW
(KEYS 40 AND 46)
C1 Controllers and Transmitters
(KEY 25)
BELLOWS
(KEY 52)
PROPORTIONAL
BAND ASSY
DIRECT ACTING
RESET TUBING
(KEY 27)
PROPORTIONAL
TUBING (KEY 27)
BELLOWS
(KEY 52)
PROPORTIONAL
BAND ASSY
DIRECT ACTING
March 2017
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