Table Of Contents; Manual Overview; Safety Information; System Specifications - Pentair Autotrol 255 Series Service Manual

tABlE oF CoNtENtS

MANUAL OVERVIEW ............................................................2
SAFETY INFORMATION ........................................................2
SYSTEM SPECIFICATIONS ...................................................2
EQUIPMENT INSTALLATION ................................................4
SYSTEM STARTUP ................................................................6
PROGRAMMING ...................................................................6
SERVICE AND MAINTENANCE ............................................9
255 VALVE & TANk ADAPTER MODULE .......................... 10
255 SERIES ........................................................................ 12
TROUbLEShOOTING ......................................................... 14
FLOW DIAGRAMS ............................................................... 16
FLOW DATA ChARTS .......................................................... 17

MANuAl oVErVIEW

How to use this Manual
This installation manual is designed to guide the installer
through the process of installing and starting conditioners
featuring the 400 series controllers.
This manual is a reference and will not include every system
installation situation. The person installing this equipment
should have:
• Training in the 400 series controllers and water
conditioner installation
• knowledge of water conditioning and how to determine
proper control settings
• basic plumbing skills
• The directional instructions "left" and "right" are
determined by looking at the front of the unit.

SAFEtY INForMAtIoN

Electrical
There are no user-serviceable parts in the AC adapter,
motor, or controller. In the event of a failure, these should be
replaced:
• All electrical connections must be completed according
to local codes.
• Use only the power AC adapter that is supplied.
• The power outlet must be grounded.
• To disconnect power, unplug the AC adapter from its
power source.
Mechanical
• Do not use petroleum based lubricants such as
petroleum jelly, oils, or hydrocarbon based lubricants.
Use only 100% silicone lubricants.
• All plastic connections should be hand tightened.
Plumber's tape may be used on connections that do not
use an O-ring seal. Do not use pliers or pipe wrenches.
• All plumbing must be completed according to local
codes.
• Soldering near the drain line should be done before
connecting the drain line to the valve. Excessive heat will
cause interior damage to the valve.
• Do not use lead-based solder for sweat solder
connections.
2 • Autotrol
255 Valve/400 Series Service Manual
®
• The drain line must be a minimum of 1/2" diameter. Use
3/4" pipe if the backwash flow rate is greater than 5 GPM
(18.9 Lpm) or the pipe length is greater than 20 feet (6
m).
• Do not support the weight of the system on the control
valve fittings, plumbing, or the bypass.
General
• keep the media tank in the upright position. Do not turn
on side, upside down, or drop. Turning the tank upside
down will cause media to enter the valve.
• Operating ambient temperature is between 34ºF (1ºC)
and 120ºF (49ºC).
• Operating water temperature is between 34ºF (1ºF) and
100ºF (38ºC).
• Working water pressure range is 20 to 125 psi (1.38
to 8.61 bar). In Canada the acceptable working water
pressure range is 20 to 100 psi (1.38 to 6.89 bar).
• Use only regenerant salts designed for water softening.
Do not use ice melting, block, or rock salts.
• Follow state and local codes for water testing. Do not use
water that is micro-biologically unsafe or of unknown
quality.
• When filling media tank, do not open water valve
completely. Fill tank slowly to prevent media from exiting
the tank.
• When installing the water connection (bypass or
manifold) connect to the plumbing system first. Allow
heated parts to cool and cemented parts to set before
installing any plastic parts. Do not get primer or solvent
on O-rings, nuts, or the valve.
CAlIForNIA ProPoSItIoN 65 WArNING
this product contains chemicals known to the
WARNING:
State of California to cause cancer or birth
defects or other reproductive harm.

SYStEM SPECIFICAtIoNS

The systems below have been tested and certified
by the WQA to NSF/ANSI Std. 44 and NSF/ANSI 372
for "lead free" compliance.
The 255 valve has been tested and certified by the WQA to
NSF/ANSI Std. 61 Section 8 Mechanical Devices
WQA Certified 255-460i Systems:
255-460i-075-844
255-460i-100-948
Working Pressure:
Standard 12 Volt Transformer
Input Electrical Rating:
Optional 12 Volt Transformer
Input Electrical Rating:
Operating Ambient
Temperature:
Operating Water Temperature:
For service or parts, please contact your local professional
water treatment dealer.
20-125 psi (1.38 - 8.61 bar)
115V 60 hz
115V 50 hz, 230V 50 hz,
230V 60 hz, 100V 60 hz,
100V 50 hz
34-120°F (1-49°C)
34-100°F (1-38°C)