C1 Controllers and Transmitters
Instruction Manual
September 2009
31
adjustment knob (key 73) as a unit. Snap the lock
spring (key 72) onto the indicator scale.
12. Install the spring adjustor (key 65, figure 18)
with washers (key 64, figure 18) on either side of the
bias spring (key 70, figure 18). Tighten down the
spring adjustor until it stops against the gain
adjustment bar (key 63).
13. Turn the proportional band adjustment knob
to 10. If it cannot be turned to 10 loosen the spring
adjustor (key 65).
14. Secure the bellows (key 52) with the bellows
screws (key 53), making sure that the nozzle
(key 54) is centered on the flapper (key 40).
15. Unscrew the supply and output gauges
(figure 21 or 22, key 2) and install new gauges with
correct ranges.
16. Replace the subassembly in the case and
secure with machine screws (figure 21 or 22,
key 41). Re
−
install the Bourdon tube if it was
removed; refer to the Replacing the Bourdon Tube
section. Reconnect all tubing.
17. Check all tubing connections and the bellows
machine screws for leaks; tighten as necessary.
Perform the appropriate calibration procedures.
Parts Ordering
Whenever corresponding with your Emerson
Process Management sales office about this
equipment, mention the serial number of the unit.
The serial number can be found on the nameplate
(key 22, figure 21). When ordering replacement
parts, also state the complete 11
−
character part
number of each part required as found in the
following parts list.
WARNING
Use only genuine Fisher replacement
parts. Components that are not
supplied by Emerson Process
Management should not, under any
circumstances, be used in any Fisher
instrument. Use of components not
supplied by Emerson Process
Management may void your warranty,
might adversely affect the
performance of the instrument, and
could cause personal injury or
property damage.
WARNING
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use, or maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end
−
user.
Parts Kits
Description
Part Number
Controller Repair Kits
Kit includes Gasket, Relay Gasket, Bellows Frame
Gasket, and keys 16, 20, 21, 31, 37, 38, 40, 46, 49,
50, 54, 62, 75, 76, and 77
Note
Keys 71K, 71L, and 71M may also be
necessary for repair of C1B and C1D
controllers. Refer to the Common Parts
section for part numbers.
Standard Temperature
RC100X00L12
High Temperature
RC100X00H12
Relay Replacement Kits
Kit includes keys 19 and 29, the replacement relay, and
2 Machine Screws
Standard Temperature
RRELAYX0L22
High Temperature
RRELAYX0H22
Case Assembly Seal Kit
Kit includes 3 Manifold Seals, 1 Manifold Cover,
and 10 Mounting Screws
RC100X00012
Parts List
Common Parts (Figures 21, 22, 23,
and 24)
Key
Description
Part Number
Note
Part numbers are shown for recommended
spares only. For part numbers not shown,
contact your Emerson Process Management
sales office.
1
Case and Cover Assembly, aluminum
