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Table of Contents
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Valve Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
System Regeneration Cycles (7-Cycle Operation). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Disinfection of Water Conditioners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Placing Conditioner into Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Valve Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
255/440i Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
260 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Valve Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Safety Information
This water conditioner’s control valve conforms to NSF/ANSI 44 and 61 for materials and
structural integrity only. Generic systems were tested and certified by WQA as verified
by the performance data sheet.
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Please review this entire Installation and Operation manual before installing unit.
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We recommend that this water conditioning unit be installed by a trained
professional water treatment dealer. Follow all local codes for plumbing this unit.
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Follow local electrical codes. Install a correctly sized electrical bonding jumper
between the inlet and outlet pipes when these devices are installed in metallic
plumbing systems.
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Inspect this unit carefully for carrier shortage or shipping damage before beginning
installation of unit.
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This system is not intended to be used for treating water that is microbiologically
unsafe or of unknown quality without adequate disinfection before or after the
system.
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This system is to be used only for potable water.
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Use only lead-free solder and flux, as required by federal and state codes, when
installing soldered copper plumbing.
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Use caution when sweat joining metal pipes near this water conditioning system.
Heat can adversely affect the plastic used in this system and bypass valve.
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Use only silicone grease for lubrication of this unit.
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Use only the power transformers supplied with this conditioning systems control
valve unit.
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Do not allow this water conditioning unit to freeze. Damage from freezing will void
this water conditioning unit’s warranty.
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Do not store flammable or volatile chemicals near this water conditioning unit.
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For the purpose of plumbing system sizing, only the rated service (i.e. "Normal") flow
and corresponding pressure loss may be used. The rated service flow rates are the
flow rates at which the performance capabilities of these devices were evaluated.
Contact your local Professional Water Dealer for system service, and to obtain
Autotrol brand replacement parts for this control valve unit.
