Culligan Mark 100 User manual

CULLIGAN®
MARK 100
AUTOMATIC
WATER CONDITIONER
MODELS FROM 2000
©2000CulliganInternationalCompany
Cat. No. 01-8822-22
Rev. A 04-25-00
DCO#992590
Service
Manual
Printed in USA

WARNING-Priortoservicingequipment,disconnectpower
supplytoprevent electricalshock.
IF THIS EQUIPMENT IS TO BE USED IN THE TREATMENT
OF DRINKING WATER, THE WATER MUST BE MICROBIO-
LOGICALLY SAFE.
Attention Culligan Customer:
The installation, service and maintenance of this equipment should be
rendered by a qualified and trained service technician.Your local indepen-
dently operated Culligan dealer employs trained service and maintenance
personnel who are experienced in the installation, function and repair of
Culligan equipment. This publication is written specifically for these indi-
viduals and is intended for their use.
We encourage Culligan users to learn about Culligan products, but we
believe that product knowledge is best obtained by consulting with your
Culligan dealer. Untrained individuals who use this manual assume the
risk of any resulting property damage or personal injury.
WARNING-Ifincorrectlyinstalled,operatedormaintained,this
productcancausesevereinjury. Thosewho install,operate,or
maintainthisproductshouldbe trainedinitsproper use,warnedofits
dangers,andshouldreadtheentiremanualbeforeattemptingto
install,operateormaintainthis product.

Table of Contents Page
Introduction ............................................................... 2
Specifications ........................................................... 3
Familiarization........................................................... 4
Programming............................................................10
ManualCycling ........................................................12
ServiceCheck ..........................................................13
BoradDiagnostics....................................................14
PartsReplacementGuide ........................................15
TroubleshootingGuide..............................................19
WiringDiagram ........................................................23
DimensionCharts/RefillRates ..................................24
FlowRate and DrainLine Charts ..............................26
FlowCharts..............................................................28
Service
Manual
CULLIGAN®
MARK 100
AUTOMATIC
WATER CONDITIONER
MODELS FROM 2000

2CULLIGAN®MARK100 WATERSOFTENER
Introduction
SAFEPRACTICES
Throughout this manual there are paragraphs set off by special headings.
NOTICE: Notice is used to emphasize installation, operation or maintenance information which is important, but
does not present any hazard.
Example: NOTICE: The nipple must extend no more than 1 inch above the cover plate.
CAUTION: Caution is used when failure to follow directions could result in damage to equipment or
property. Example:
CAUTION:Disassembly while under waterpressure can result inflooding.
WARNING: Warning is used to indicate a hazard which could cause injury or death if ignored. Example:
WARNING! ELECTRICALSHOCKHAZARD!UNPLUGTHEUNITBEFORE
REMOVINGTHECOVERORACCESSINGANYINTERNALCONTROLPARTS.
SERIAL NUMBERS
The control valve serial number is located on the back of the timer case.
The media tank serial number is located on the top surface of the tank.
NOTICE: Do not remove or destroy the serial number. It must be referenced on request for warranty repair or
replacement.
This publication is based on information available when approved for printing. Continuing design refinement
could cause changes that may not be included in this publication.
* Verified using hardness surrogate perANSI/NSF Standard 44.
The Culligan®Mark 100 water softeners are tested and validated by WQAagainstANSI/NSF
Standard 44 for the effective reduction of calcium and magnesium, along with Barium and
Radium226/228*.

SPECIFICATIONS 3
Specifications
Culligan®Mark100WaterConditionerswithTimeClock,Aqua-Sensor®DeviceorSoft-Minder®Meter
1 Capacities and corresponding salt dosages pertain to low hardness waters. Capacities given are per recharge
2 Measured from top of media to top of inlet fitting (backwashed and drained).
3 Measured from top of underbedding to top of inlet fitting.
4 Backwash at 120 psi (830 kPa).
5 10 minute backwash, 7 lb (3.2 kg) 9” model or 13 lb (5.9 kg) 12” model salt dosage at 30 psi (204 kPa).
9” Model 12” Model
ControlValve 5-cycle, Reinforced Thermoplastic 5-cycle, Reinforced Thermoplastic
Overall Conditioner Height 51 in 51 in
1 295 mm 1 295 mm
Media Tank Dimensions (Dia x Ht) 9 x 45 in 12 x 45 in
229 x 1 143 mm 305 x 1 143 mm
Salt StorageTank Dimensions (Dia x Ht) 16 x 43 in 18 x 43 in
406 x 1 092 mm 457 x 1 092 mm
18 x 43 in
457 x 1092 mm
Exchange Media, Type and Quantity Cullex®Media, 0.86 ft3Cullex®Media, 1.4 ft3
Cullex®Media, 24.5 L Cullex®Media, 40 L
Underbedding, Type and Quantity Cullsan®Underbedding, 12 lb Cullsan®Underbedding, 30 lb
Cullsan®Underbedding, 5.4 kg Cullsan®Underbedding, 14 kg
Exchange Capacity 17,500 gr @ 4.0 lb 24,100 gr @ 6.0 lb
@ Salt Dosage Per Recharge11 133 g @ 1.8 kg 1 560 g @ 2.7 kg
23,900 gr @ 8.0 lb 34,500 gr @ 12.0 lb
1 547 g @ 3.6 kg 2 234 g @ 5.4 kg
26,600 gr @ 12.0 lb 41,900 gr @ 18.0 lb
1 722 g @ 5.4 kg 2 713 g @ 8.1 kg
Freeboard to Media216.6-17.6 in 17.5-18.5 in
420-447 mm 444-470 mm
Freeboard to Underbedding339.2 in 38.5 in
996 mm 978 mm
Salt Storage Capacity 250 lb or 375 lb 375 lb
114 kg or 170 kg 170 kg
Rated Service Flow @ Pressure Drop 7.5 gpm @ 15 psi 7.5 gpm @ 15 psi
30 Lpm @ 102 kPa 31 Lpm @ 102 kPa
Total Hardness, Maximum 75 gpg 99 gpg
1 283 mg/L 1 692 mg/L
Total Iron, Maximum 5 ppm 5 ppm
5mg/L 5 mg/L
Hardness to Iron Ratio, Minimum 8 gpg to 1 ppm 8 gpg to 1 ppm
140 mg/L to 1 mg/L 140 mg/L to 1 mg/L
Operating Pressure 20-125 psi 20-125 psi
140-860 kPa 140-860 kPa
Operating Temperature 33-120°F 33-120°F
1-50°C 1-50°C
ElectricalRequirements 120V/60 Hz 120V/60 Hz
Electrical Power Consumption, Min/Max 3 Watts/35 Watts 3 Watts/35 Watts
Drain Flow, Maximum42.0 gpm 3.5 gpm
8 Lpm 14 Lpm
RechargeTime,Average580 min 85 min
RechargeWater Consumption,Average 45gal 86gal
170 L 325 L

Familiarization
4CULLIGANMARK 100WATERSOFTENER
Control
The Culligan®Mark 100 water softener uses the same power valve control as in our Culligan Mark 89/812 models. It can
be programmed as either a time clock,Aqua-Sensor®sensing device or Soft-Minder®meter model. Each model has its
own programming parameters which can be set to control the operation and regeneration of the system. These functions
are outlined inTable 1.
Aqua-Sensor
Time Soft-Minder Sensing
Function Clock Meter Device
1. Time of Day YES YES YES
2. Time of Regen. YES YES YES
3. Not Used NO NO NO
4. Salt Dosage YES YES YES
5. Backwash Time YES YES YES
6. Brine Rinse Time YES YES YES
7. Hardness Level NO YES NO
8. Gallons Capacity / Regen. Interval YES YES NO
8A. Forced Regeneration Interval NO YES* YES*
9. Lock/Unlock display YES YES YES
10. Blanking Feature YES YES YES
TABLE1
During the programming stage, the user will be prompted to enter the appropriate parameter. Refer to the programming
section for further information.
Circuit Board
TheAccuSoft™microprocessor circuit board controls every function of the Culligan Mark 100 water softener. This board
has several unique features which allow it to perform a variety of functions. Familiarization of the board is essential for
a thorough understanding of the softener.
The AccuSoft™circuit board has a set of default
settings that the microprocessor will reset to when-
ever any dip switches are flipped, or if a meter or
Aqua-Sensor cable is attached or removed while the
power is on the the control. Table 2 is a list of the
default microprocessor settings.
TABLE2
1 Time of Day 12:00 A.M.
2 Time of Regeneration 2:00 A.M.
3 Chlorination (Not Used) 10 min.
4 Salt Dosage 10 lb., 9”
16 lb., 12”
5 Backwash Time
6 Brine Rinse 71 min., 9”
59 min., 12”
7 Hardness
8 Regeneration Interval 3 days
9 Display Blanking Enabled
10 Display Lock Out Disabled
10 min.
20 GPG
It is reccomended to always disconnect the power
from the circuit board prior to replacing anAqua-
Sensor probe or Meter cable so that the programmed
settings are not lost.
* When dip switch #10 is in the ON position

FAMILIARIZATION 5
FIGURE 2
Programming Switches
The circuit board will require the proper setting of the dip switches in order to function properly. Figure 1 shows the dip switches.
Switch 1 - Sets the unit in the Run or Test mode.
Switch 2 - Sets the unit for Filter or Softener.
Switch 3 - Sets the flow meter K factor for the 3/4" or 1-1/4" flow meter.
Switch 4 - Sets the control for 9” or 12” diameter tanks.
Switch 5 - Sets the unit for the standard or accelerated Refill cycle.
NOTICE: For an accelerated Refill cycle, the refill flow control in the brine refill assembly must be changed to PN 00-4016-23.
Switch 6 - Sets the unit for immediate or delayed regeneration.
Switch 7 - Sets the unit to measure in liters and French or German hardness, or in gallons and the conventional gpg hardness.
Switch 8 - Sets the unit to display time with a 24 or 12 hour clock.
Switch 9 - Sets the unit for either French or German hardness degrees when switch #7 is in the ON position.
Switch 10 - When turned ON, the microprocessor will force a regeneration based on the setting 8A in the menu.
Auxiliary Connections
Refer to Figure 2 for all circuit board connections.
Power terminals are located along the lower section
ofthe circuit board. The connection marked 'POWER'
is for the transformer connector, and the motor con-
nection is marked 'MOTOR'. The connection for the
cam switch harness, marked 'CAM', is located in the
upper right corner near the dip switches. The Aqua-
Sensor sensing device connection is located in the
lower center of the board, just above the power con-
nectors, while the Soft-Minder connection is located
in the upper left side of the board. Just below the
meter connection is a connection marked 'BATT',
which is for the optional battery back-up. All termi-
nals are clearly marked to ease installation.
Dip Switch
1
2
3
4
5
6
7
8
9
10
Function
Run or Test Mode
Filter or Softener
Flow Meter K Factor (3/4" or 1-1/4")
9"-12" Tank Settings
Standard vs.Accelerated Refill
Delay vs. Immediate Regeneration
English vs. Metric Settings
12or 24 Hour Clock
German or French Hardness Degrees
TimeClockBackup
Default(OFF) Position
Run Mode
Softener
3/4" Flow Meter
9"Tank
StandardRefill
Delayed Regeneration
English Settings
12HourClock
German(When #7is ON)
No Forced Regeneration
FIGURE 1

6CULLIGANMARK 100WATERSOFTENER
Aqua-SensorOperation
The Aqua-Sensormodels contain a feature which can automatically detect when the brine solution has been
rinsed through the Cullexmedia. This feature will advance the control to the next position when it senses that
the brine has been rinsed out prior to the time set in the brine rinse option. The Brine/Rinse time can be manually
raised or lowered in the microprocessor.
Tables 3A and 4A show the total capacity of the Aqua-Sensorunit at various salt dosages, along with the
average capacity used prior to a signal calling for a regeneration.
To view the length of the last Brine/Rinse cycle, press the STATUS button until the display is blank. Press the
down arrow until the number 15 is illuminated. See the Service Check section for more information.
Soft-MinderOperation
The microprocessor automatically calculates the gallons of water which can be treated based on the salt dosage,
the water hardness, and the tank size. Numeric enunciator 8 will display the GALLONS TO SIGNAL for regenera-
tion (the portion of the capacity which is held in reserve is not displayed).
NOTICE: Changes to the salt dosage, or water hardness will not immediately update the GALLONS TO
SIGNAL setting. The control will recalculate the setting upon completion of a regeneration cycle.
As an option GALLONS TO SIGNAL for regeneration can be set to directly override the calculation through
numeric enunciator 8. The gallon value can be raised or lowered to meet the needs of your specific application.
The control must be cycled through a complete regeneration before the gallon override setting is stored by the
microprocessor.
NOTICE: Changing the capacity will affect the reserve capacity. An INCREASE in the gallons capacity will
DECREASE the reserve capacity. A DECREASE in the gallons capacity will INCREASE the reserve capacity.
Refer to Tables 3B and 4B to determine the units total capacity based on salt dosage and the hardness level.
The gallons remaining can be viewed by pressing the STATUS button until the display is blank. Press the down
arrow until the number 15 is illuminated. The value in the display must be multiplied by 10 to determine the
actual gallons remaining before the unit calls for a regeneration. The unit will initiate an immediate regeneration if
dip switch 6 in the ON position. See the Service Check section for more information.
Regeneration
There are several conditions that will cause the control to trip a regeneration. The 'REGEN' enunciator will light
when the control has signaled for a regeneration. The 'REGEN' enunciator will flash while the control is in
regeneration.
The following are conditions that will call for regeneration:
1. When the Aqua-Sensor®probe senses the hardness in the Cullex®media.
2. When the Soft-Minder®meter has recorded the passage of a predetermined number of gallons.
3. When the time clock has counted past the set number of days.
4. At the preset time, when the number of days without a regeneration is equal to the days set in menu #8A.
5. At the preset time, when the 'REGEN.’ button is depressed once. 'REGEN.' will light.
6. Immediately, when the ‘REGEN.” buttonis depressedtwice. 'REGEN.' will light and blink.
7. Immediately, if power to the unit has been off for more than 3 hours.
If dip switch 6 is in the ON position the unit will begin a regeneration immediately for instances 1 and 2. With dip
switch 6 in the OFF position, the regeneration will not begin until the preset regeneration time.

Display Blanking
As shipped from the factory, the display of the board will turn off if there has been no keypad activity for a 1 minute
period. To have the display constantly lit, press the STATUS button until the number 10 icon is lit. Next, press the
UParrow.A“d” for disable will appear in the display. To have the display blank again , press the UParrow. An “E”
will appear in the display .
Display Lockout
The Culligan®Mark 100 control is equipped with a new feature which will allow you to protect the programmed
settings from tampering by unauthorized individuals. When the lockout feature is activated, the only parameter
which can be adjusted is the Time-of-Day.
Toactivate the lockout feature, press the STATUS buttonuntil thenumber 9 icon is illuminated.A“U”for unlock will
bedisplayed. Press theUPand DOWN arrows simultaneously.A“L” for lock willappear along with an iconof a lock.
All program parameters, except time of day, are now frozen at their current settings. To disable this feature, press the
UPand DOWN arrows simultaneously.
Power Loss
The AccuSoft®circuit board is equipped with a Hi-Cap Capacitor and EEPROM memory chip. The capacitor is
capable of maintaining the time, for at least one day, in the event of a power outage. The EEPROM ensures that the
individual programming parameters of the softener are not lost.
If the power outage lasts long enough to drain the Hi-Cap Capacitor, the control will flash "12:00 PM" when
power is returned to the control. The unit will continue to keep time from the moment power is restored, and will
initiate a full regeneration at the preset regeneration time. The time of day will need to be reset in order to return
the regeneration to its preset time.
Failure Mode
The Culligan Mark 100 control is equipped to detect a motor or piston which is locked in a frozen position. The
AccuSoft™circuit board will apply power to the motor for 30 seconds. If there is no change in the motor homing or
position switch, the control will power down for 90 seconds. The circuit board will repeat this procedure two more
times in an attempt to remove the obstruction. If no movement has been detected, the control will permanently
power down and a phone icon will appear in the display. The phone indicates that a service call is required to fix the
control. To return to the service mode, turn off the power to the unit for 1 full minute and remove the obstruction to
the motor or piston.
FAMILIARIZATION 7

TABLE3A-CAPACITY,9”AQUA-SENSOR®SENSINGDEVICE(GALLONS)
8
12
SALT
DOSAGE 160 LB INCH(CM) 250 LB INCH(CM) 375 LB INCH(CM)
“A” DIMENSION
14-3/4
(37.5)
21-3/4
(55.2)
9-1/4
(23.5)
15-3/4
(40.0)
7-1/2
(19.1)
11-3/8
(26.9)
4,900
3,537
5,420
3,656
1-5
2,450
1,949
2,710
1,828
6-10
1,633
1,179
1,807
1,219
11-15
1,225
1,004
1,355
914
16-20
980
707
1,084
731
21-25
817
590
903
609
26-30
774
522
31-35
678
457
36-40
602
406
41-45
542
366
46-50
493
332
51-55 56-60 61-65 66-70 71-75
HARDNESS
TOTAL CAPACITY
CAPACITY TO SIGNAL
TOTAL CAPACITY
CAPACITY TO SIGNAL
TABLE3B-CAPACITY,9”SOFT-MINDER®METER(GALLONS)
4
8
12
SALT
DOSAGE 160 LB INCH(CM) 250 LB INCH(CM) 375 LB INCH(CM)
“A” DIMENSION
7-3/4
(19.7)
14-3/4
(37.5)
21-3/4
(55.2)
4-5/8
(11.7)
9-1/4
(23.5)
15-3/4
(40.0)
3-1/4
(8.9)
7-1/2
(19.1)
11-3/8
(26.9)
3,220
2,596
4,900
3,314
5,420
3,656
1-5
1,610
1,298
2,450
1,657
2,710
1,828
6-10
1,073
849
1,633
1,084
1,807
1,195
11-15
805
637
1,225
813
1,355
896
16-20
644
495
980
631
1,084
696
21-25
537
412
817
526
903
580
26-30
700
442
774
987
31-35
613
387
678
426
36-40
544
333
602
367
41-45
490
300
542
331
46-50
445
267
493
294
51-55
452
270
56-60
417
246
61-65
387
229
66-70
361
209
71-75
HARDNESS
TOTAL CAPACITY
CAPACITY TO SIGNAL
TOTAL CAPACITY
CAPACITY TO SIGNAL
TOTAL CAPACITY
CAPACITY TO SIGNAL
700
505
613
442
544
393
490
354
445
322
452
305
417
281
387
261
301
244
8CULLIGAN®MARK100 WATERSOFTENER

TABLE4A-CAPACITY,12”TIMECLOCKANDAQUA-SENSOR®SENSINGDEVICE(GALLONS)
12
18
SALT
DOSAGE 160 LB INCH(CM) 250 LB INCH(CM) 375 LB INCH(CM)
“A” DIMENSION
21-3/4
(56.2)
15-3/4
(40.0)
24-1/2
(62.2)
11-3/8
(28.9)
17-1/4
(43.8)
6,740
4,542
7,660
5,200
1-5
3,370
2,271
3,830
2,600
6-10
2,247
1,514
2,553
1,733
11-15
1,685
1,136
1,915
1,300
16-20
1,348
908
1,532
1,040
21-25
1,123
757
1,277
867
26-30
1,094
743
31-35
958
650
36-40
851
578
41-45
766
520
46-50
638
433
51-60 61-70 71-80 81-90 91-99
HARDNESS
TOTAL CAPACITY
CAPACITY TO SIGNAL
TOTAL CAPACITY
CAPACITY TO SIGNAL
TABLE4B-CAPACITY,12”SOFT-MINDER®METER(GALLONS)
6
12
18
SALT
DOSAGE 160 LB INCH(CM) 250 LB INCH(CM) 375 LB INCH(CM)
“A” DIMENSION
14-3/4
(37.5)
21-3/4
(56.2)
7-3/8
(18.7)
15-3/4
(40.0)
24-1/2
(62.2)
5-1/2
(14.0)
11-3/8
(28.9)
17-1/4
(43.8)
4,520
3,495
6,740
4,832
7,660
5,346
1-5
2,260
1,748
3,370
2,416
3,830
2,673
6-10
1,507
1,143
2,247
1,580
2,553
1,748
11-15
1,130
857
1,685
1,185
1,915
1,311
16-20
904
666
1,348
920
1,532
1,018
21-25
753
555
1,123
767
1,277
849
26-30
963
644
1,094
713
31-35
843
564
958
624
36-40
749
486
851
537
41-45
674
437
766
484
46-50
562
357
638
395
51-60
547
335
61-70
479
286
71-80
426
246
81-90
383
219
91-99
HARDNESS
TOTAL CAPACITY
CAPACITY TO SIGNAL
TOTAL CAPACITY
CAPACITY TO SIGNAL
TOTAL CAPACITY
CAPACITY TO SIGNAL
963
649
843
568
749
505
674
454
562
379
547
371
479
325
N/A
N/A
646
466
565
408
426
289
383
260
FAMILIARIZATION 9

10 CULLIGANMARK 100WATERSOFTENER
Press ▲to increase or
▼to decrease
Press ▲to increase or
▼to decrease
Press ▲to increase or
▼to decrease
SETTING THE MICROPROCESSOR
The microprocessor senses when it is installed as a Soft-Minder orAqua-Sensor®control. Adding or removing
any connection to the board, or flipping any of the dip switches will automatically reset the microprocessor to
the factory settings.
1. With a flashing or blank display,
pressing the status button twice will
move to the Time-of-Dayadjustment,
adjust the time by using the up and
down arrows. Anumber “1” will appear
at the bottom of the display while in this
mode.
2. Press status again, this displays the
Time-of-Regenerationfor delayed units,
adjust using the up and down arrows. A
number “2” will appear at the bottom of
the display while in this mode.
3. Press status again, the number “3” will
appear at the bottom of the display.
This setting is not used, and any
changes made will not affect the
operation of the microprocessor.
4. Pressing status again will show the Salt
Dosage. This can be adjusted with the
up and down arrows, the range is 3-15
lbs. for the 9” controls and 5-24 lbs. on
12” controls. Anumber “4” will appear
at the bottom of the display while in this
mode.
Press ▲to increase or
▼to decrease
The timer uses four buttons:
1. STATUS: Advance timer through display options.
2. UPARROW: Increase the setting.
3. DOWNARROW: Decrease the setting.
4. REGEN.: Initiate a manual regeneration.
FIGURE 3-CircuitBoardDisplay
The display will initially power up flashing "12:00 PM". After 1 minute the motor will energize and cycle the
control, without stopping, to the home position. This is required to ensure that the control is in the home
position.
Programming

Press ▲to increase or
▼to decrease
Press ▲ simultaneously
▼
Press ▲to change
8. Press status again, for time clock models the display
will show the RegenerationInterval. The setting can
be adjusted using the up and down arrows. Controls
with a Soft-Minder®meter will display the Gallonsto
Signal (multiply the displayed value by 10). A
number “8” will appear at the bottom of the display
while in this mode.
8A. Display menu '8A' will light when dip switch #10 is in
the ON position. This is the Time Clock Backup
feature. The control will force a regeneration, within a
range of 1-42 days, when in theAqua-Sensor®or Soft-
Minder®meter mode.
9. Pressing status again will display the Lock/Unlock
feature. A “U” in the display signifies an unlocked
microprocessor, while a “L” will lock the settings
except for the time of day. To toggle between the two
settings press both arrow keys simultaneously. A
number “9” will appear at the bottom of the display
while in this mode.
10. Pressing status again brings up the ability to Enable/
Disable the screen blanking. To have the display
constantly lit, press the up arrow, a “d” for disable will
appear in the display. Pressing the up arrow again
displays an “E”, signifying that display blanking is
enabled. Anumber “10” will appear at the bottom of
the display while in this mode.
NOTICE: Programming changes are not locked into the microprocessor memory until the control completes
a regeneration cycle. To initiate a manual regeneration, press the REGEN. button twice, the "REGEN"
enunciator will flash on the display. Refer to the Manual Cycling section on how to step through the
regeneration stages.
Press ▲to increase or
▼to decrease
Press ▲to increase or
▼to decrease
Press ▲to increase or
▼to decrease
5. Press status again, this displays the Backwash Time
in minutes. The setting can be adjusted between 5
and 40 minutes by using the up and down arrows. A
number “5” will appear at the bottom of the display
while in this mode.
6. Press status again to display the Brine/Rinse Time in
minutes. The settings can be adjusted using the up
anddown arrows (37-85min for 9”,35-89 min for12”).
A number “6” will appear at the bottom of the display
while in this mode.
7. Press status again to display the Hardness Level in
grains per gallon. The setting can be adjusted from 2-
99 gpg by using the up and down arrows. This
screen will not appear when the Aqua-Sensor®probe
is attached. Anumber “7” will appear at the bottom of
the display while in this mode.
Press ▲to increase or
▼to decrease
PROGRAMMING 11

Manual Cycling
The Culligan®microprocessor can be indexed through the various regeneration stages. For all steps, the cycle
numbers do not appear, or change, until the motor stops.
1. Press the status button to move past steps 1-10
until the display is blank. Push the up arrow.
The number “11” icon will light up. An "H" will
appear in the display. The control is in the
HOME position. Pressing the regen button once
willlightthe'REGEN'icon.
2. Press the regen button one more time. The
'REGEN'iconwillblink, and the motorwill
advance the control. A'1' will appear. The unit is
now in the BACKWASH position. The numbers
to the right indicate the time remaining for the
cycle.
3. Press the up arrow. A'2' will appear in the
display, along with the cycle time remaining. The
controlis in theBRINE DRAW/SLOWRINSE
cycle.
4. Press the up arrow. A'3' will appear in the
display, along with the cycle time remaining. The
controlisnow in theFASTRINSE/BRINE REFILL
cycle.
5. Press the up arrow. An 'H' will appear in the
display. The unit is in the HOME position. The
'REGEN'enunciator isno longerblinking.
6. Press the status key. Time-of-Day appears in the
display.
12 CULLIGAN®MARK100 WATERSOFTENER

SERVICECHECK 13
The service check mode allows one to view the instantaneous flow rate, the days since the last regeneration,
the total number of regenerations, the regenerations in the past fourteen days, and the gallons remaining.
To enter the service check mode, follow these steps:
Service Check
1. Press the status key to move past steps 1-10 until
the display is blank.
2. Push the down arrow. The number '12' will appear
only when the Soft-Minder®meter is connected.
The display reads the gallons per minute flow
rate. This screen will update with the current
meter reading every 6 seconds.
3. Press the down arrow. The number '13' and an
"A" will light at the bottom of the display. The
display will indicate the number of regenerations
that have occurred in the last 14 days.
5. Press the down arrow. The number '14' will light
at the bottom of the display. The number in the
display indicates the number of days since last
regeneration.
6. Press the down arrow. The number '15' will be
displayed if the flow meter orAqua-Sensor®is
connected. For the controls with the Soft-
Minder®meter, the display indicates the gallons
remaining before the unit signals for regeneration
(multiply the displayed number by 10). ForAqua-
Sensor®controls, the number indicates the total
minutes of the last brine rinse cycle.
4. Press the down arrow. The number '13' and a 'B'
will light at the bottom of the display. The display
will indicate the total number of regenerations
this control has cycled through.
NOTICE: Pushing the up arrow at any of these displays will immediately bring you to the control position
display, the number '11' will light at the bottom of the display.

BoardDiagnostic
To enter the board test mode, flip all of the dip switches to the ON position.All the segments of the board will light until
either a key is depressed, an option is changed or a CAM micro switch changes position. Pressing one of the keys,
closing a micro switch or turning OFF a dip switch will cause a different segment to light as outlined inTable 5.
A balanced signal should be applied to the Aqua-Sensor®pin connector. This can be done with a clean Aqua-Sensor
probe and a fully regenerated bed or with theAqua-Sensor Tester, PN 01-0079-99.
An unbalanced signal will cause the drive motor to run continuously.A balanced signal will cause the motor to stop.
This test can be used to check the integrity of the Aqua-Sensor probe. If the probe is connected to the board and
the drive motor runs continuously, the probe should be cleaned and checked.
Board Diagnostics
14 CULLIGAN®MARK100 WATERSOFTENER
ACTION
UPKEY
DOWNKEY
REGENKEY
STATUSKEY
CLOSEDHOMINGSWITCH
CLOSEDPROGRAMSWITCH
FLOWMETERCABLEPLUGGEDIN
AQUA-SENSORPROBEPLUGGEDIN
WATERFLOW
DIPSWITCH1
DIPSWITCH2
DIPSWITCH3
DIPSWITCH4
DIPSWITCH5
DIPSWITCH6
DIPSWITCH7
DIPSWITCH8
DIPSWITCH9
DIPSWITCH10
SEGMENT
1
2
3
4
5
6
7
8
9(Fluttering)
SOFTWAREVERSION
"1111"
"2222"
"3333"
"4444"
"5555"
"6666"
"7777"
"8888"
"9999"
TABLE 5

PARTSREPLACEMENTGUIDE 15
Familiarize yourself with the replacement procedures and component parts thoroughly before attempting any repair.
WARNING!DISCONNECT ALL ELECTRICAL POWER TO THE UNIT BEFORE
SERVICING. BYPASS THE UNIT AND RELIEVE SYSTEM PRESSURE BEFORE
ATTEMPTING REPAIR.
Circuit Board
To replace theAccuSoft™circuit board, refer to the parts list and proceed as follows:
1. Remove the timer cover be removing the two screws located in the front of the cover.
2. Swing the circuit board mounting plate out, and lift it off of the two hinge posts.
3. Remove all connected wire leads from the board.
Parts Replacement Guide
4. Remove the four screws holding the board to the mounting plate. See Figure 4.
CAUTION: Grip all connections to the circuit board by the connecting terminals for
assembly and disassembly. Failure to do so could result in damage to the wire leads or connect-
ing terminals
CAUTION: Do not touch any surfaces of the circuit board. Electrical static discharges may
cause damage to the board. Handle the AccuSoft™circuit board by holding olny the edges of the
circuit board. Keep replacement boards in their special anti-static bags until ready for use.
Mishandling of the circuit board will void the warranty.
5. The new circuit board can be installed by reversing the steps 1-4 above.
FIGURE 4
CAUTION: The wire connectors must be connected to the circuit board properly. The wires
must exit the plug-in connector opposite of the raised white base of the circuit board connector.

16 CULLIGAN®MARK100 WATERSOFTENER
Refer to Figure 5 for assembly and disassembly of the various valve components listed below.
Drive Motor Assembly
1. Remove the drive motor cam switches by removing the one screw holding the switches to the motor
2. Remove the E-ring holding the drive motor cam to the camshaft with a flat tip screwdriver.
3. Lift the cam off the shaft.
4. Using a 1/4" hex driver, remove the bolt above the eductor piston assembly.
5. Loosen the two screws holding the yoke support plate and the motor to the control valve.
6. Remove the yoke support plate and yoke by gently pulling them down.
7. Fully remove the two screws holding the motor to the control. The motor will pull away from the control and the
backplate will be hanging free.
NOTICE: If the unit is equipped with a meter, it is recommended to unclip the meter cable from the meter body to allow
backplate movement. The Aqua-Sensor probe will have to be disconnected from the circuit board and the strain relief in the
backplate will need to be removed.
NOTICE: Care should be taken to not damage the brine piston if it is not going to be replaced. The brine piston will need to
be twisted slightly in order to remove it from the motor die casting.
This procedure can be followed in the reverse order to reassemble the backplate and motor to the control. When reassembling the
scotch yoke, the yoke must slide into the yoke support plate prior to pushing the assembly up into the piston end and follower.
Figure 6 shows proper assembly of the yoke into the support plate.
FIGURE 5
NOTICE: The seal pack may need to be repositioned in order for the follower to be inserted into the yoke, using the motor and
backplate to push the seal pack fully into the valve is helpfull in aligning the yoke. Make sure that the follower is in the
follower slot on the yoke, and that the end of the piston rod is held in the end of the yoke.
NOTICE: When attaching the support plate be certain to push up on the plate until the two mounting screws bottom in the U-
shaped channels of the support plate.

PARTSREPLACEMENTGUIDE 17
PISTON ROD
YOKE SUPPORT
PLATE
YOKE
SLOT FOR
FOLLOWER
Seal Pack Assembly
Follow the instructions for the replacing drive motor assembly through step 7, then continue as follows:
1. With the drive motor and backplate set aside, firmly pull the seal pack assembly from the valve body.
2. Lightly lubricate the o-rings of the replacement seal pack with silicone grease.
3. Reverse the procedure for reassembly.
NOTICE: Use only silicone grease; petroleum-based lubricants will cause the degradation of the rubber components.
CAUTION: Do not twist the seal pack upon insertion. This can cause the outer o-rings to
pinch, cut, or crimp.
FIGURE 6
Eductor Piston/ Eductor Sleeve Assembly
Follow the instructions for the replacing drive motor assembly through step 7, then continue as follows:
1. With the drive motor and backplate set aside, firmly pull the eductor piston & sleeve assembly from the valve body.
2. Lightly lubricate the o-rings of the replacement piston & sleeve assembly with silicone grease.
3. Reverse the procedure for reassembly.
NOTICE: Use only silicone grease; petroleum-based lubricants will cause the degradation of the rubber components.
NOTICE: The eductor piston & sleeve assemblies are unique to the softener, filter, and Super STM controls. Refer to the
parts list to ensure that the proper assembly is used.

18 CULLIGAN®MARK100 WATERSOFTENER
Backwash Flow Control
Refer to Figure 7 and the following instructions for replacement of the backwash flow control:
1. Remove the drain elbow retaining clip from the valve body.
2. Pull the drain elbow from the valve body.
3. Remove the flow control from the valve body control and replace with a new flow restrictor.
NOTICE: the number on the backwash flow control should face into the valve body.
4. Reverse the procedure to reassemble. Be certain that the replacement is the correctly sized flow restrictor.
Eductor Assembly
Refer to Figure 7 and the following instructions for replacement of the eductor:
1. Remove the three screws and the eductor plate
2. Remove the eductor screen by lifting it from the eductor body.
3. Remove the eductor body by grasping one of the projections with the pliers and gently pulling upward.
4. Reverse the procedure to reassemble. Be certain that the replacement eductor body contains the correct
eductor nozzle.
TABLE6-EductorSelection
Model
9"Mark100
12"Mark100
NozzleColor
Blue
Beige
NozzleP/N
00-4460-38
00-4460-38
TABLE 7-Backwash FlowRestrictorSelection
Model
9"Mark100
12"Mark100
Color&Number
Brown,#2
DarkGreen,#3
P/N
00-3316-35
00-3316-36
FIGURE 7