Pentair AUTOTROL 368 Service Manual page 7

EQUIPMENT INSTALLATION continued
Before inserting the connector:
• Check that all O-rings are in place and not damaged.
• O-rings are pre-lubricated. Sliding surfaces should be
lubricated with 100% silicone grease.
Firmly insert connector into bypass. Press locking clip into
position. Make certain the clip is fully engaged.
NOTE: Before turning on the water to the valve, rotate the two
handles on the bypass valve 2-3 times. This will help
seat O-rings and prevent leaking.
To remove a clip:
1. Turn off water and release water pressure at the valve.
2. Push the water line connectors into the bypass and valve.
This will help release O-rings that may have seated in
place.
3. Remove the clip by inserting a flat blade under the
top center of the clip and lifting (prying up) (Figure 10
Connector Assembly).
Do not use pliers to remove a clip. It is likely
WARNING:
the clip will break.
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 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 softener 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.
NOTE: The drain line connects to the elbow previously
installed. It is located between the water line
connections at the rear of the valve.
5. Use pliers to expand a clamp. Slide the clamp up one end
of the longer length drain line tubing about 1-2 inches and
release.
6. Push the tubing over the ribbed drain line fitting.
7. Expand the clamp and move it up the tube to pinch the tube
to the fitting.
8. Secure the discharge end of the drain line to prevent it from
moving.
Right Way
Figure 11 Drain Line Connection
Waste connections or drain outlet shall be designed
NOTE:
and constructed to provide for connection to the
sanitary waste system through an air-gap of 2 pipe
diameters or 1 inch (22 mm) whichever is larger.
Never insert drain line directly into a drain,
WARNING:
sewer line, or trap (Figure 11 Drain Line
Connection). Always allow an air gap between
the drain line and the wastewater to prevent
the possibility of sewage being back-siphoned
into the softener.
Overflow Line Connection
In the event of a malfunction, the salt TANK OVERFLOW will
direct "overflow" to the drain instead of spilling on the floor.
This fitting should be on the side of the cabinet.
To connect the overflow line, locate the tubing connector on the
side of the tank (Figure 12 Tubing Connections). Attach length
of 1/2-inch (1.3-cm) I.D. tubing to fitting and run to drain. Do
not elevate overflow line higher than overflow fitting.
Do not tie into drain line of control unit. Overflow line must be
a direct, separate line from overflow fitting to drain, sewer or
tub. Allow an air gap as per drain line instructions.
Overflow
Connection
Figure 12 Tubing Connections
Salt Line Opening
AUTOTROL 368 Service Manual• 7