Autotrol Magnum Cv 942, Installation And Service Manual, Page: 32 / 86

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5.3 Impulse
Series 952 Impulse Controls
The Series 952 impulse controls initiate a regeneration,
or backwash, upon receiving an external line powered
switch closer signal for a minimum of three minutes.
The three models available are:
Once the external signal is received, the control
automatically steps the valve through the appropriate
cycles. Cycle positions are identified by the Indicator
Knob.
Once the control has reached the REGENERATION
COMPLETE position, the 952 control will be ready for
the next external line powered switch closure signal. If
a switch closure signal is received during a
regeneration or backwash, it will be ignored.
Adjusting the Salt Setting - Model 952 and 952QC
The Salt Dial (Figure 5.12) 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.
Figure 5.12 Regeneration Complete.
It is important to note that the numbers on the Salt Dial
represent “MINUTES” of water refill time. To determine
the total pounds of salt that will be used for a
regeneration, it is necessary to know the refill control
that is used in the conditioner. The refill control
determines the flow rate of water into the salt tank
during the refill cycle. Reference the
Salt-Use Table on
page 26 to determine the total pounds of salt used per
regeneration for various size tanks.
Table 5.10 Cycle Times for 952 Control
Regenerating Iron Filters - Model 952
Refer to the heading Regenerating Iron Filters - Model
942 in Section 5.2 for information on this type of system
application. All common control settings, control
regenerant settings, and regenerant usage which apply
to the 942 control are the same as those used on the
952 control. This iron filter information applies to
potassium permanganate regenerated manganese
greensand filter systems only.
Adjusting the Backwash Setting - Model 952F
The Backwash Dial (Figure 5.13) controls the backwash
time. With the Indicator Knob in the
BACKWASH
COMPLETE position, rotate the Backwash 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 Backwash
Dial to the desired setting. The numbers on the
Backwash Dial represent “MINUTES” of backwash
time.
Figure 5.13 Backwash Complete.
Table 5.11 Cycle Times for 952F Control
Wiring the 952 Series Controls
The 952 and 952F controls come with 21-foot (6.4-m)
of wire for connection to the external signaling device.
Refer to wiring illustration in the Wiring Diagram
Section of this manual for further installation
information. The 952QC is pre-wired with a standard
7-foot (2.13-m) cable assembly designed to plug
directly into an Autotrol 480QC. Optional 14-foot
(4.27-m) and 21-foot (6.4-m) cable assemblies are
available. An optional feed back switch assembly,
mounted on the Magnum control valve, is required,
when operating in the 952QC configuration.
Control Description
952 5 Cycle Softener
952F 3 Cycle Filter
952QC 5 Cycle Softener with Quick-Connect Cables
Cycle Time (Minutes)
Backwash 17
Brine/Slow Rinse 95
Purge 9
Refill 2 - 24
Salt Dial
Indicator Knob
Cycle Time (Minutes)
Backwash 8 - 30
Purge 9
Backwash Dial