Beck, R&J Automobile Parts 14-10 Manual De Usuario

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35
 
Figure 13
Handswitch
 
To replace the Handswitch, remove the 
terminal cover, ESR-4 board and ESR-4 bracket.  
Clip the five wires from the old Handswitch.  
Remove the knob and the nut under the knob to 
remove the switch.  Install the new Handswitch as 
shown in Figure 13, above.  Splice the wires color 
for color.  Replace the ESR-4 bracket, board and 
the terminal cover.  Torque bolts to 10 lb-ft.
NOTE:  The AUTO position on the Handswitch 
knob must be straight up when the switch is 
fully clockwise.  Handswitch part number 
20-3300-27.
ESR-4 Board
 
Field service of the ESR-4 board is not 
recommended.  The factory maintains a stock 
of replacement boards for immediate shipment.  
To replace the ESR-4 board, open the terminal 
compartment cover (1/2" bolt heads).  Loosen 
the four captive screws holding the board to its 
mounting pads.  Note the “L” shape mounting 
bracket on the end of the board; to remove, pull the 
mounting bracket away from its mating surface.
 
To install an ESR-4 board, lightly press the 
board connector into its receptacle until the 
mounting bracket is flush with its mounting 
surface.  Tighten the four captive screws and 
close the compartment cover.  Torque the cover 
bolts to 10 Ib-ft.
CPS-2
 
Field repair of the CPS-2 assembly is not 
recommended.  The factory maintains a stock of 
replacement assemblies for immediate shipment.  
If it is necessary to replace the CPS-2, replace 
both the rotor and stator / circuit board assembly.
 
When returning the CPS-2 to the factory 
for service, please include the rotor and stator 
/ circuit board assembly.  Do not separate the 
stator or circuit boards from their mounting plate.  
It is recommended that the rotor be held inside 
the stator with rubber bands and the hex studs 
be reattached to the mounting plate for protection 
during shipment.
 
To remove the CPS-2, remove the top cover 
and run the drive to the 0% position (100% for 
Model 20-3400-04 & -14 if used for 0–15 V dc 
signal).  Note direction of shaft rotation.  Turn the 
Handswitch to STOP and turn off all AC power to 
the drive.  Disconnect the wires from transformer 
and spring clamp terminals.  See Figure 10, page 
29.  Note wire colors and locations.  Pull wires 
through the mounting plate hole.  Loosen the 
rotor coupling and remove the three hex stud nuts 
supporting the CPS-2 assembly.  Support the 
inboard hex stud when removing nuts.  Remove the 
CPS-2 stator / circuit board assembly and rotor.
 
To install the CPS-2, slide the rotor onto 
the control shaft (clamp end toward the limit 
switches).  Leave the clamp loose.  Assemble 
CPS-2 over the rotor and mounting studs, 
transformer out and at approximately 4 o’clock.  
Secure assembly with three hex nuts.  Torque to 
60 Ib-in.  Reconnect wires.
 
To set CPS-2 rotor position, open the terminal 
cover (1/2" bolt heads) and connect a mA / V dc 
multimeter to the feedback terminals.  See wiring 
diagram supplied with drive or Table 11, page 46, 
for correct terminals.  Run drive to 0% position 
(100% for model 20-3400-04 & -14 if used for 
0–15 V dc signal).  Note direction of control shaft 
rotation.  Put Handswitch in STOP.  Insert .031“ 
thickness gauge between rotor clamp and stator.  
See Figure 8, page 29.  Position the rotor so that 
the slot in the rotor is aligned with the wire holes 
and transformer on CPS-2 board.
 
Set 0% rotor position by rotating the rotor 15 
degrees in the direction that the control shaft moves 
when the output shaft moves toward the 100% 
position on increasing signal (CPS-2 models 20-
3400-04 & 14 rotate rotor 15 degrees in direction 
control shaft moves when the output shaft moves 
toward 0% position on decreasing signal).
 
While reading the meter, position the rotor for 
the exact specified 0% output from the CPS-2.  
Tighten the rotor clamp to 5 Ib-in torque and 
remove the thickness gauge.
 
Run the drive and check the CPS-2 output 
signal span.  If it is acceptable, no further 
adjustments are necessary.  If not, refer to page 
27, CPS-2 Calibration Procedure, for further 
instructions.  On units equipped with an ESR-4, 
check input signal calibration.
 
Remove the meter and replace the top cover.  
Tighten the cover bolt just enough to compress 
the O-ring seal.  Close the terminal cover and 
torque bolt to 10 Ib-ft.