Pentair AUTOTROL LOGIX 742 - Sanitization

Installer manual Autotrol Magnum 293 - 298 Logix 742-762 - Commissioning
Ref. MKT-IM-012 / D - 03.02.2022 65 / 110
7.1.2 Additional tips
• When the controller is first plugged in, it may display a flashing hourglass and the message
"Err 3", this means that the controller is rotating to the home position. If the "Err 2" is
displayed, check that the incoming power frequency matches the controller;
• the preset default time of regeneration is 2:00 AM;
• power supply: The World controller senses the electrical input and decides which is needed;
• the 700 Series controller can be programmed to regenerate on specific days of the week;
• if electrical power is not available, the camshaft can be rotated counter-clockwise by hand if
the motor is removed;
• the 700 Series controllers send commands to the motor for camshaft movement. However,
water pressure/flow are required during the regeneration cycle for backwash, purge and
refill, and brine draw to actually take place;
• make sure the control power source is plugged in. The transformer should be connected to a
non-switched power source;
• you can start programming from the beginning by resetting the amount of media, see
Resetting the controller [
→
Page62].
7.2 Sanitization
7.2.1 Disinfection of water softeners
The materials of construction of the modern water softener will not support bacterial growth, nor
will these materials contaminate a water supply. In addition, during normal use, a softener may
become polluted with organic matter, or in some cases with bacteria from the water supply. This
may result in an off-taste or odour in the water.
Thus, the softener may need to be disinfected after installation. Some softeners will require
periodic disinfection during their normal lifetime. Consult the installing dealer for more
information on softener disinfection.
Depending on the conditions of use, the softener type, the type of ion exchanger and the
disinfectant available, a choice can be made among the following methods.
7.2.2 Sodium or calcium hypochlorite
These materials are satisfactory for use with polystyrene resins, synthetic gel zeolite, greensand
and bentonites.
5.25% Sodium hypochlorite
If stronger solutions are used, such as those sold for commercial laundries, adjust the dosage
accordingly.
Dosage
Polystyrene resin: set 1.25mL fluid per 1L of resin.
Non-resinous exchangers: set 0.85mL fluid per 1L.