Aqua-Pure CBW1001 - Manual (Page 10)

Step 5
Loosen set-screw and pull out drain line fl ow control (DLFC) assembly from valve body (see
Figure 2). Unscrew drain line elbow from DLFC. Apply PTFE tape to threads. Reassemble to
valve body, making certain DLFC assembly is fully inserted into valve body before tightening
set-screw.
Attach drain line to drain line fi tting. To prevent back pressure from reducing fl ow rate below
minimum required for backwash, drain line must be sized according to run length and relative
height. Be careful not to bend fl exible drain tubing sharply enough to cause “kinking” (if kink-
ing occurs drain line must be replaced!).
Typical examples of proper DRAIN LINE diameters are:
1) 1/2 in. ID up to 15 ft. when discharge is lower than inlet.
2) 5/8 in. ID up to 15 ft. when discharge is slightly higher than inlet.
3) 3/4 in. ID when drain is 25 ft. away and/or drain is installed overhead.
Some areas prohibit the use of fl exible drain lines. Check with local code offi cials prior to
installation.
Step 6
Position the drain line over the waste drain pipe and secure fi rmly. To prevent back siphoning of sewer water or grey water, provide an air gap of at least
two inches or 2 times the pipe diameters between the end of drain line tubing and waste drain (Figure 3). Do not raise the drain line more than 10 feet
above the fl oor. Check with local code offi cials to ensure you conform to local, state and national plumbing codes.
Step 7
a) Turn on power to well pump and plug control valve power cord into 110V/60Hz, non-switched power source. Manually stage control to backwash
position (Refer to page 3-1) and then unplug power cord to prevent the unit from advancing automatically. Open bypass valve inlet knob approxi-
mately 1/4 of the way to full open (service position) this will purge any entrapped air in the media bed to drain.
IMPORTANT NOTE
Filters containing activated carbon, Filter-Ag ® or iron reduction media
must be saturated for at least four (4) hours prior to subjecting the unit to
full backwash fl ow rates. Failure to do this may result in loss of mineral
during initial backwash procedure.
b) Once a steady stream of water is fl owing to drain, open both the bypass valve inlet and
outlet knobs completely. Check for leaks. Leave unit in backwash for at least 10 minutes
or until drain line water runs clear, whichever is longer. After this preliminary backwash,
stage control valve to service position and plug timer into a 110/120V, 60 Hz non-switched
power source (Refer to page 3-2). Manually initiate a complete backwash process, allow-
ing unit to automatically proceed through a backwash and rapid rinse. Check drain water
at end of rapid rinse cycle.
Step 8
Set the time of day by referring to Page 3-1 “How To Set The Time-Of-Day”. Set backwash frequency (see Determine Backwash Frequency.)
INSTALLATION IS NOW COMPLETE AND SYSTEM IS READY FOR SERVICE
Determine Backwash Frequency
The exact backwashing frequency depends on the quality of the raw water, but it is recommended that fi lters containing activated carbon, Filter-Ag or
fi lter sand be programmed to backwash at least once every four days. If pressure drop becomes excessive, contaminant reappears in the treated water
before four days, increase the frequency.
Filters containing neutralizer, calcium carbonate or magnesium oxide should be backwashed every three days to prevent the media particles from ce-
menting together.
2-3
EQUIPMENT
DRAIN LINE
DRAIN
2" REF.
AIR GAP
Figure 3. DRAIN
Saturation Time Table
Media Time Required
Activated Carbon 4 hours
Iron and Manganese
Standard Media
30 Minutes or less
Filter-Ag ® 4 Hours
Filter Sand None required
Multi-Layered Media 4 Hours
Neutralizer 30 minutes or less
Sulfur 30 Minutes or less
Calcium Carbonate 30 Minutes or less
Magnesium Oxide 30 Minutes or less