Instruction Manual
D103292X012
C1 Controllers and Transmitters
March 2017
35
Figure 18. Reverse/Direct Acting Tubing Connections for Proportional Controllers or Transmitter
RELAY TUBING
(KEY 24)
REVERSING BLOCK
(KEY 37)
DIRECT ACTING
POSITION
PROPORTIONAL TUBING
(KEY 27)
RESET TUBING
(KEY 27)
REVERSE ACTING
POSITION
REVERSING BLOCK
(KEY 37)
DIRECT ACTING
REVERSE ACTING
FLAPPER/SCREW
(KEYS 40 AND 46)
RELAY TUBING
(KEY 24)
RESET VALVE
(KEY 256)
PROPORTIONAL
BAND ASSY
PROPORTIONAL
BAND ASSY
GG15992-1
FLAPPER/SCREW
(KEYS 40 AND 46)
RESET VALVE
(KEY 256)
RESET TUBING
(KEY 27)
PROPORTIONAL
TUBING (KEY 27)
PROPORTIONAL-PLUS-RESET CONTROLLER
PROPORTIONAL TUBING
(KEY 25)
DIRECT ACTING
REVERSE ACTING
REVERSING BLOCK (KEY 37)
NOZZLE (KEY 54)
PROPORTIONAL
BAND ASSY
PROPORTIONAL
BAND ASSY
GE28263-B
PROPORTIONAL-ONLY CONTROLLER OR TRANSMITTER
PROPORTIONAL TUBING
(KEY 25)
BELLOWS
(KEY 52)
BELLOWS
(KEY 52)
REVERSING BLOCK (KEY 37)
NOZZLE (KEY 54)
TO CHANGE ACTION OF THE CONTROLLER, REPOSITION THE PROPORTIONAL TUBING,
REVERSING BLOCK/NOZZLE AND PROPORTIONAL BAND ASSY AS SHOWN ABOVE
RELAY TUBING
(KEY 24)
RELAY TUBING (KEY 24)
BELLOWS
(KEY 52)
DIRECT ACTING
POSITION
REVERSING
ACTING
POSITION
BELLOWS
(KEY 52)
FLAPPER/SCREW
(KEYS 40 AND 46)
FLAPPER/SCREW
(KEYS 40 AND 46)
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.
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