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BYPASS
Automatic Raw Water Bypass During Regeneration
The regeneration cycle can last 80 minutes after which filtered water service will be restored. During regeneration, un-filtered
water is automatically bypassed for use in the household. Hot water should be used as little as possible during this time to prevent
un-filtered water from filling the water heater. This is why automatic regeneration is set for sometime during the night and manual
regenerations should be performed when little or no water will be used in the household.
Manual Bypass
In the case of emergency you can isolate your water filter from the water supply using the bypass valve located at the back of the
control. In normal operation the bypass is open with the on/off knobs in line with the inlet and outlet pipes.
To isolate the filter, simply rotate the knobs clockwise (as indicated by the word BYPASS and arrow) until they lock. You can use your
water related fixtures and appliances as the water supply is bypassing the filter. However, the water you use will be untreated. To
resume water service, open bypass valve by rotating the knobs counterclockwise.
Please make sure bypass knobs are com-
pletely open otherwise the unfiltered water could bypass through the valve.
More than 90% of problems affecting the efficiency of a chemical iron free filter system can be identified in 9 minutes or less by following this diagnostic schedule. Start with Step
1, then follow each step in sequence to ensure proper diagnostic procedures.
1. Check for Proper Installation
a.
Is the pipe from the pressure tank to the filter unit attached to the inlet port of the control valve? Is the pipe from the filter unit to the water heater attached to the outlet
port of the control valve?
b.
Is the drain line of adequate diameter? Drain line must be sized to prevent back pressure from reducing backwash flow rate below minimum for the model installed.
Typical examples of minimum drain line diameters are:
i)
5/8” ID when drain is up to 15 ft from unit and backwash water discharge point is slightly higher than the control valve
ii)
3/4” ID when drain is 25 ft away and/or drain is installed overhead
c.
Has the drain line been “kinked”? A kinked drain line must be replaced.
d.
Is the drain line installed in a way that it will freeze in cold weather?
e.
If the system incorporates a standard air-to-water pressure tank, does it have the required deep well air volume control (air release valve) and is it functioning? (Proper
installation of this type of pressure tank should have inlet from pump higher than outlet to service.)
2. Check pH, Iron and Manganese Content of Treated Water
Is the treated water pH reading less than 6.7 (8.2 when manganese is present)? If yes, replenish the media with MpH adder and check the bed for “channelling”.
3. Check Pumping Rate
Do not refer to a pumping rate curve for this data. Follow the instructions found on Page 7. Is the measured pumping rate less than the backwash rate of the filter? If yes,
increase the pumping rate by first reducing the system operating pressure. If the pumping rate is still too low, replace the pump.
4. Manually Stage Filter Control to Backwash Cycle
Does a “rush” of air precede the backwash water out of the drain line? (If no, proceed to Step 6). If yes, the system is “air-logged”. Disconnect power from the pump and allow
the system pressure to drop to zero through the filter drain line. Restore power and rebuild system pressure. Continue backwashing unit until the pump has completed two or
three pressure cycles. Stage control valve to the service position and check the hydrocharger draw time. Adjust draw for 1/3 of pump cycle time.
5. Determine Other Uses of Water in Addition to Normal Domestic Purposes
(e.g. geothermal heating or cooling, swimming pool fill, lawn irrigation, farm animal watering, etc.) Have any high demand water uses been added subsequent to the
installation of the filter system or overlooked when originally sizing the system? (If a high demand situation exists, resize the system using continuous service flow rate data.)
DURING REGENERATION
Automatic Bypass
The regeneration cycle lasts approximately 60 minutes, after which treated water service will be restored. During regeneration, untreated water is automatically bypassed for use
in the household. Hot water should be used as little as possible during this time to prevent hard water from filling the water heater.
IMPORTANT: This is why the automatic regeneration is set for sometime during the night and manual regenerations should be performed when little or no
water will be used in the household.
SYSTEM CHECK LIST
