Pentair 255-742-075-844, Руководство по обслуживанию

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EQUIPMENT INSTALLATION CONTINUED
• Direct Sunlight — The materials used will fade or
discolor over time in direct sunlight. The integrity of the
materials will not degrade to cause system failures. If it
is necessary to locate the conditioner in direct sunlight, a
protective outdoor cover (P/N 1267811) over the valve and
controller is necessary.
• Temperature — Extreme hot or cold temperatures
may cause damage to the valve or controller. Freezing
temperatures will freeze the water in the valve. This will
cause physical damage to the internal parts as well as the
plumbing. High temperatures will affect the controller.
The display may become unreadable but the controller
should continue to function. When the temperature drops
down into normal operating limits the display will return
to normal. A protective cover (P/N 1267811) should assist
with high temperature applications.
• Insects — The controller and valve have been designed to
keep all but the smallest insects out of the critical areas.
Any holes in the top plate can be covered with a metal
foil duct work tape. The top cover should be installed
securely in place.
• Wind — The Logix cover is designed to withstand a 30
mph (48 Kph) wind when properly installed on the valve.
Water Line Connection
A bypass valve system should be installed on all water
conditioning systems. Bypass valves isolate the conditioner
from the water system and allow unconditioned water to be
used. Service or routine maintenance procedures may also
require that the system is bypassed. Figures 5, 6, and 7 show
the three common bypass methods.
Normal Operation In Bypass
In
B
Y
P
A
S
S
B
Y
P
A
S
S
Out
BY
PA
SS
BY
PA SS
In Out
Figure 5 Series 256 bypass for use with 255 valve body
BY
PA
S
BY
PA
S
B
Y
P
A
S
B
Y
P
A
S
Water Conditioner
Normal Operation In Bypass
In Out
In Out
Water Conditioner
Figure 6 Series 1265 bypass for use with
Performa valve bodies
Water
Conditioner
Water
Conditioner
Water Conditioner
Normal Operation In Bypass
Water Conditioner
Figure 7 Typical Globe Valve Bypass System
WARNING:
The inlet water must be connected to the inlet
port of the valve. When replacing non-Pentair
Water valves, the inlet and outlet may be
reversed. It is also possible for the plumbing
to be installed in an opposite order. Do not
solder pipes with lead-based solder.
WARNING:
Do not use tools to tighten plastic fittings. Over
time, stress may break the connections. When
the 1265 or 256 bypass valve is used, only
hand tighten the plastic nuts.
WARNING:
Do not use petroleum grease on gaskets when
connecting bypass plumbing. Use only 100%
silicone grease products when installing any
plastic valve. Non-silicone grease may cause
plastic components to fail over time.
Drain Line Connection
NOTE:
Standard commercial practices are expressed here.
Local codes may require changes to the following
suggestions. Check with local authorities before
installing a system.
1. The unit should be above and not more than 20 feet
(6.1 m) from the drain. Use an appropriate adapter fitting
to connect 1/2 inch (1.3 cm) plastic tubing to the drain line
connection of the control valve.
2. If the backwash flow rate exceeds 5 gpm (22.7 Lpm) or if
the unit is located 20-40 feet (6.1-12.2 m) from drain, use
3/4 inch (1.9 cm) tubing. Use appropriate fittings to connect
the 3/4 inch tubing to the 3/4 inch NPT drain connection on
valve.
3. The drain line may be elevated up to 6 feet (1.8 m) providing
the run does not exceed 15 feet (4.6 m) and water pressure
at the conditioner is not less than 40 psi (2.76 bar).
Elevation can increase by 2 feet (61 cm) for each additional
10 psi (.69 bar) of water pressure at the drain connector.
4. Where the drain line is elevated but empties into a drain
below the level of the control valve, form a 7 inch (18 cm)
loop at the far end of the line so that the bottom of the loop
is level with the drain line connection. This will provide an
adequate siphon trap.
Where the drain empties into an overhead sewer line, a sink-
type trap must be used.
Secure the end of the drain line to prevent it from moving.
Right Way
Air Gap
Drain
Figure 8 Drain Line Connection
AUTOTROL
742/762 Control 255 & Performa Series Valves (263, 268, 268FA) Service Manual
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