Myron L CTCIITD - Manual (Page 18)

F. RE-SCALE YOUR CTCII CONTROLLER
1. DESCRIPTION
The CTC Series II controller, has been designed for easy field re-
scaleability. To re-scale your 0-5000 µS CTCII to 0-5000 “PPM”
TDS 442™ or visa versa requires the simple slide of a switch.
WARNING: BEFORE STARTING, IF MONITOR/CONTROLLER
IS INSTALLED, ENSURE THE POWER IS OFF. FAILURE TO
DO SO COULD CAUSE DAMAGE TO THE INSTRUMENT, AND
COULD BE HARMFUL OR FATAL TO PERSONNEL. ONLY
QUALIFIED PERSONNEL SHOULD INSTALL OR SERVICE
ELECTRICAL EQUIPMENT.
Physical
NOTE: When opening instrument, remove front panel with care. If
the front panel has already been removed from the enclosure skip
to #3.
1. Using a Phillips Head screwdriver remove the four (4)
screws on the clear cover.
2. Remove clear cover.
3. The front panel is held in place with hook & loop strips
on each side. By carefully lifting at the slot on the top,
the front panel will pull toward you. Do not pull more than
about 8 inches/20CM.
DO NOT pull on control knob(s).
4. Rotate the front panel down so that the back side is
facing you. The Circuit Board is mounted to the back of
the front panel.
5. Locate the switch next to the transformer. See figure
II.F.1.
6. Slide knob toward the desired scale - TDS/ppm or
COND/µM(µS).
7. Recalibrate, see CALIBRATION PROCEDURES, section
V.B.
8. Install (remove) Parts Per Million - TDS label (supplied
inside).
9. Reassemble front panel.
! CAUTION - READ FOLLOWING CAREFULLY
Main CB Assembly
Figure II.F.1
SET POINT
HYSTERESIS
RIGHT INC
LEFT DEC
115/230 VAC
SELECT SWITCH
100mA Slow Blow (T.10A)
115 & 230 VAC (V~)
SCALE SELECT
ELECTRONIC
CALIBRATION
MAIN
CALIBRATION
CONTROL
DISPLAY
CALIBRATION
CONTROL
(FACTORY SET)
OPTIONAL
LIMIT
TIMER
CONTROL
MODULE
OPTIONAL
4-20 mA
OUTPUT
MODULE
DIS
CAL
TDS COND EC
CTCII
DISPLAY
TRANSFORMER
Yel
CAP CAP
C4AM
LTM
HYST
Flow Switch
Jumper -
Remove if
flow switch
installed.
SWITCH
FUSE
RELAY RELAY
BLEED FEED
FEED
PUMP
BLEED
VALVE POWER FLOW
SWITCH SENSOR 0-10VDC
FS BK WTRD GN NU R- R+ PWR C GD PWR C GD PWR C GD
Wickman Fuse 5 Amp
(#3741500041 or equiv)
115 VAC(V~)
14