Mechanical Control; Common Settings - Autotrol Magnum Cv 942 Installation And Service Manual

5.2 Mechanical
Series 942 Mechanical Controls
The Series 942 mechanical controls provide
mechanical timeclock function for water softening and
filter applications; 942 model for softening
applications, (Figure 5.9) 942F model for filtering
applications. Identification of the specific model is
provided on the front of the control. The controls are
very similar in appearance, function, and settings.
However, they require different gear drives and
camshafts to function properly. The softener and filter
camshafts are identified in the Assembly Drawings and
Parts List, Section 12.10, of this manual.
Indicator Knob
Day Pin
Calendar Cap
Figure 5.9

5.2.1 Common Settings

Setting the Time of Day, the Days of Regeneration or
Backwash and performing manual regenerations or
backwashing are the same for 942 and 942F controls.
Setting the Time of Day
Rotate the Clock Dial clockwise until the pointer
indicates the correct time of day. With the time of day
set, the conditioner will regenerate at approximately
2:00 a.m. If it is desired to have the unit regenerate at
an earlier or later time, simply offset the current time of
day accordingly. For example, to have the unit
regenerate at 4:00 a.m., set the Clock Dial 2 hours
earlier than the actual current time of day.
Note: Do not rotate the Calendar Cap by hand. The
Clock Dial indexes the Calendar Cap daily. To manually
index the Calendar Cap, rotate the Clock Dial
clockwise one complete turn for every day to be
indexed. Day pins should be in the outward position
during Clock Dial rotation to prevent an undesired
regeneration. Reset day pins when completed.
Setting the Days of Regeneration
Setting the days that the conditioner will regenerate is
accomplished in two simple steps:
1. Pull all of the day pins outward.
2. Push in the day pin(s) for the day(s) on which a
regeneration or backwash is desired.
NOTE: The NEXT DAY pin is noted on the control face.
Pushing this pin will insure a regeneration the next day
at approximately 2:00 a.m. since the Calendar Cap
progresses in a clockwise direction, pushing the day
pin immediately following the NEXT DAY pin
counterclockwise will insure a regeneration occurs the
following day at approximately 2:00 a.m. This
progression is noted on the control face as "FUTURE
DAYS".
Manual Regeneration
Excessive water usage or other service related issues
may create the need to manually regenerate the
conditioner. This function is performed by rotating the
Indicator Knob COUNTERCLOCKWISE to the
"START" position. Once in this position, the conditioner
will begin a regeneration or backwash within a few
minutes. The normal schedule, established with the
pushed in day pins, will not be disrupted by a manual
regeneration or backwash.
24 Hour Clock
All Magnum 942 and 942F controls utilize a 24 hour
clock dial. This is typically referred to as "Military Time".
Clock Dial
The hours of the day between 12:00 a.m. (midnight)
and 12:00 p.m. (noon) are designated on the clock dial
by the numbers 1 through 12, with 1 being 1:00 a.m.
The hours of the day between 12:00 p.m. (noon) and
12:00 a.m. (midnight) are designated on the clock dial
by the numbers 13 through 24, with 13 being 1:00 p.m.
Be sure to set the correct time of day accordingly.
Adjusting the Salt Setting - Model 942
The Salt Dial (Figure 5.10) controls the total amount of
salt used per regeneration. With the Indicator Knob in
the REGENERATION COMPLETE position, rotate the
Salt Dial counterclockwise at least one full turn to
cancel out the current setting. A light clicking sound will
be replaced by a heavier clicking sound when the
previous setting is cancelled. Once the heavier clicking
is heard, the new setting may be set by rotating the Salt
Dial counterclockwise to the desired setting.
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