Watts PWBWMZ 3 Cu. Ft. - Manual (Page 7)

7
Installation continued
22. Plug the unit back in to the electrical outlet and allow it to finish
the flush cycle. This will take approximately 20 minutes.
23. Set the time of day. Press and hold either the Up or Down but-
tons until the programming icon replaces the service icon and
the parameter display reads TD. Adjust the displayed time with
the Up and Down buttons. When the desired time is set, press
the Extra Cycle button to resume normal operation. The unit will
also return to normal operation after 5 seconds if no buttons are
pressed.
24. Turn on the gas or electric supply to the water heater after all air
has been purged from the house's plumbing system and water
heaters.
Controller
The factory default program settings should be adequate for most
installations. See the ProFlo SXT Service Manual included with the
unit for advanced programming options.
Filter Operation
As water enters the filter, it passes through the filter media. Over
time, suspended solids accumulate in the filter media and need to be
rinsed out. This is accomplished by performing a backwash. During
backwash the filter is in automatic bypass allowing unfiltered water
to pass downstream. The automatic backwash is initiated based on
time and is normally set to occur in the middle of the night.
This System Has Three Positions:
1. Backwash Position
Backwash is a rapid upward flow of water that loosens the filter bed
and flushes dirt and sediment captured in the bed out to the drain.
2. Fast Rinse Position
Fast Rinse is a fast flow of water down through the filter bed that
follows a Backwash. This packs the filter bed for the next service
cycle.
3. Service Position
When the filter is In Service, water is flowing through the system and
sediment is being removed from your water if it’s a Micro Z™ filter.
If it’s a carbon filter, it removes chlorine, tastes, odors, and organics
from your water. If your system contains calcite media your water's
acidic pH will be raised closer to a value of 7.
probLem cause soLutIon
1. Loss of Water Pressure Sediment buildup in filter bed
A. Perform a manual backwash
B. Make sure unit is plugged in
C. Replace media
2. Drain Flows Continuously Foreign material in control
Remove piston assembly and inspect bore, remove foreign
material & check control in various ports
3. Wrong time of day Power Outage Reset time of day. Be sure power supply in uninterrupted
4. Controller Cycles Continuously Faulty timer board or microswitch Replace defective components
5. Unfiltered water in house
A. Bypass in Bypass position A. Move Bypass to service position
B. Valve stalled in backwash B. Have valve serviced
C. Media needs to be replaced C. Have system serviced
error coDe cause soLutIon
(Err 0) Drive motor is stalled See above troubleshooting table, #5-B
(Err 1) Drive water runs continuously See above troubleshooting table, #4
(Err 2) There has been more than 99 days since the last regeneration Initiate a manual regeneration
(Err 3) Control Board memory failure Replace control board
Troubleshooting
Replenishing Calcite Filter Bed Media
As low pH water is neutralized by the calcite filter media a small
amount of calcite dissolves into the water. Over a period of time
calcite media will need to be added to the system so that it can
continue to perform properly. The need to add calcite media to the
system can be verified by performing a pH test on the treated water.
If the results of the pH test show a value below 6.5 pH units contact
your system installer or local water treatment professional to have
the media bed replenished.
note: Error codes appear in the service display.