Clean Water Systems 5900e-AIR Installation manual

Pro Ox 5900e-AIR Installation & Startup Guide
Pro-Ox 5900e-AIR Installation & Start-Up Guide
Thank you for purchasing a Clean Water System!
With proper installation and a little routine maintenance
your system will be providing iron free water for many years.
Please review this start-up guide entirely before beginning
to install your system and follow the steps outlined for best results.
MEDIA CONTAINS DUST. USE PAPER MASK AND VENTILATE TO
AVOID BREATHING DUST.
2806-A Soquel Ave. Santa Cruz CA 95062
For assistance call: 1-831-462-8500
Email us: [email protected]
More information online: www.cleanwaterstore.com
Clean Water Made Easy
www.cleanwaterstore.com

Pro Ox 5900e-AIR Installation & Startup Guide
Table of Contents
Packing List.................................................................................................................................................... 3
Pro-Ox 5900e-AIR 948........................................................................................................................... 3
Pro-Ox 5900e-AIR 1054......................................................................................................................... 3
Pro-Ox 5900e-AIR 1254......................................................................................................................... 3
How Your Pro Ox 5900e-AIR Works.............................................................................................................. 4
System Limitations.................................................................................................................................... 4
Pre-Installation.............................................................................................................................................. 5
Best Practices for Piping & Drain Installation ............................................................................................... 5
Installation of Your System into Copper or Metal Piping Systems ........................................................... 6
Fig 2 - Typical Pro Ox 5900-AIR piping installation with ball valve and hose bib after the filter ......... 7
Fig 3: 5900 from the rear showing the inlet (left) and outlet (right) end-connector fittings 3/4” or 1”
NPT in Noryl plastic. Brass end-connectors are also available for connecting to copper tubing ......... 8
Fig 4 5900 Bypass/Service Mode Knob Positions................................................................................ 8
Assembly and Installation Instructions......................................................................................................... 9
Fig 5: 5900e Bypass with Barrels Fig 6: Bypass with steel mounting clips..................................... 10
Programming Your Valve ............................................................................................................................ 13
Master Programming Mode ....................................................................................................................... 14
Initial Backwash .......................................................................................................................................... 15
Maintenance ............................................................................................................................................... 16
Normal Operation................................................................................................................................... 16
Battery back-up (this unit uses a standard 9 volt alkaline battery)........................................................16
How To Start An Extra Regeneration Cycle.............................................................................................17
Troubleshooting the 5900 Pro Ox 5900e-AIR Filter.................................................................................... 17
Backwash Flow Rate................................................................................................................................ 17
Error Codes ............................................................................................................................................. 18
What To Do If Your Filter Tank Does Not Sit Level On the Floor ............................................................18
How To Remove Media From Control Head ...........................................................................................18

Pro Ox 5900e-AIR Installation & Startup Guide
Packing List
Pro-Ox 5900e-AIR 948
Pro-Ox 5900e-AIR control valve w/ bypass assembly and pipe connector kit (1” or 3/4”)
9” x 48” standard filter tank with distributor tube
Blue media funnel for adding Pro-OX media
69 lbs. of Pro-OX media
10 lbs. of Chemsorb media
16 lbs. filter gravel
Pro-Ox 5900e-AIR 1054
Pro-Ox 5900e-AIR control valve w/ bypass assembly and pipe connector kit (1” or 3/4”)
10” x 54” standard filter tank with distributor tube
Blue media funnel for adding Pro-OX media
110 lbs. of Pro-OX media
20 lbs. of Chemsorb media
16 lbs. filter gravel
Pro-Ox 5900e-AIR 1254
Pro-Ox 5900e-AIR control valve w/ bypass assembly and pipe connector kit (1” or 3/4”)
12” x 54” standard filter tank with distributor tube
Blue media funnel for adding Pro-OX media
165 lbs. of Pro-OX media
20 lbs. of Chemsorb media
20 lbs. filter gravel

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How Your Pro Ox 5900e-AIR Works
The Pro Ox 5900e-AIR, when properly applied, is an efficient and cost effective system for the removal
of iron. The Pro Ox 5900e-AIR control valve maintains a compressed “air pocket” in the top of the tank
while the system is in service. As the water passes through the air pocket, iron is oxidized. Additionally,
dissolved oxygen is added to the water. The Pro Ox filter media bed then removes the iron from the
water. The backwash (usually done at night, once every 2-4 days) will remove accumulated iron and
replenish the filter media bed. The regeneration process also adds a fresh air pocket to the system.
Fig 1 - Pro Ox 5900e-AIR Control Valve, Front View
System Limitations
The Pro Ox 5900e-AIR utilizes air, oxidation and filtration for the removal of Iron. This process will leave
some air or effervescence in the water. The effervescence may give the water a milky appearance and is
simply excess air in the water. While a certain amount of effervescence will always be present, it may be
most noticeable during the first 30 days after installation of the system.

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Pre-Installation
1. Review your packing list and make sure you have received all the parts before beginning
installation.
2. If you are going to be turning off the water to the house and you have an electric water heater,
shut off the power to the water heater before beginning installation in case water heater is
accidentally drained.
3. Pick a suitable location for your filter system on a dry level spot where it won’t be exposed to
freezing temperatures. A minimum of 20 PSI is required. Maximum pressure is 90 PSI.
4. Get all of your plumbing parts together before beginning installation. Installation typically takes
3 to 5 hours. However, after installation the Pro Ox 5900e-AIR must be allowed to run through a
complete backwash and rinse cycle.
5. After the system is installed and running, your water may be discolored, or full of sediment or
rust, particularly if this is older or corroded piping. This typically clears up over a day or two.
Best Practices for Piping & Drain Installation
1. See typical installation on page 6 (Fig 2). The Pro Ox 5900e-AIR is installed after the pressure
tank.
2. Make sure to connect the IN pipe to the Pro Ox 5900e-AIR inlet and the OUT pipe to the outlet
(see Fig 3). As you face the Pro Ox 5900e-AIR control from the front, the water enters on the
right and exits on the left. From the back (see Fig 3) the water enters on the left. The inlet and
outlet are attached to the bypass valve, which is marked with arrows as well.
3. Make sure there is a working gate or ball valve before the Pro Ox 5900e-AIR and also one after
as shown in Fig 2. The pressure gauges are optional and perhaps not necessary but a hose bib
(which is a faucet that you can attach a garden hose to) is strongly recommended after the Pro
Ox 5900e-AIR and before the second ball valve. This makes it easy to rinse your new Pro Ox
5900e-AIR on start-up and gives you a place to test the water before it enters your household
plumbing.
4. If you will be using copper piping, do not sweat the copper pipe directly on to the Pro Ox 5900e-
AIR control valve. Avoid heating up the Pro Ox 5900e-AIR control valve plastic with the torch.
5. If you have copper pipe before the Pro Ox 5900e-AIR and it is too difficult to change out, you
may still experience some copper staining of fixtures and have a copper residual in the water
because this section of pipe will still have acidic water flowing through it. We recommend PEX or
PVC pipe up to the Pro Ox 5900e-AIR and then copper after it, if you have copper plumbing.

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6. You do not need unions to install your Pro Ox 5900e-AIR control valve. If you need to remove it,
the Pro Ox 5900e-AIR has quick-release couplings that make it easy to put the Pro Ox 5900e-AIR
on by-pass and remove the filter system from the piping.
7. The drain line tubing (not supplied) is connected to a drain from the drain outlet using flexible
½” ID tubing. Note that the drain can run up above the Pro Ox 5900e-AIR control and into a
drain, it does not have to drain down, as the filter backwashes under line pressure from your
well pump. Most plumbing codes require an air-gap connection, so that if your sewer or septic
tank backs up, it cannot cross connect with the drain tubing.
Installation of Your System into Copper or Metal Piping Systems
If your new filter system is to be installed in a metal (conductive) plumbing system, i.e. copper or
galvanized steel pipe, the plastic components of the system will interrupt the electrical continuity of
the plumbing system.
As a result any stray currents from improperly grounded appliances downstream or potential
galvanic activity in the plumbing system can no longer ground through the contiguous metal
plumbing.
Some homes may have been built in accordance with building codes, which encouraged the
grounding of electrical appliances through the plumbing system.
Consequently, the installation of a bypass consisting of the same material as the existing plumbing,
or a grounded "jumper wire" bridging the equipment and reestablishing the contiguous conductive
nature of the plumbing system must be installed prior to your systems use.
This is simple and easy step to take if you are installing your water treatment system into copper
piping. A simple ground jumper wire with a pipe clamp can be purchased at any Home Center, or
hardware store etc. for a few dollars.

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Fig 2 - Typical Pro Ox 5900-AIR piping installation with ball valve and hose
bib after the filter

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Fig 3: 5900 from the rear showing the inlet (left) and outlet (right) end-
connector fittings 3/4” or 1” NPT in Noryl plastic. Brass end-connectors are
also available for connecting to copper tubing.
Fig 4 5900 Bypass/Service Mode Knob Positions

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Assembly and Installation Instructions
1. Wrap the top of distributor tube with black electrical tape or blue painter’s masking tape so that
no gravel or Pro-OX media will go down the distributor tube when adding the media. Also,
leaving a folded tab of tape that you will be able to grab onto to gently pull off the tape after
filling the tank. When you are ready to screw the valve head on, apply silicone lubricant to the
outside of the distribution tube, and the o-ring on the control valve where the tube goes in.
2. Add the filter gravel that came with your order. You want the gravel to cover the bottom
distributor screen before adding the Pro Ox media.
3. Next, add the Pro-OX media first, and the Chemsorb media last, so that the Chemsorb sits on
top of the Pro-OX media. The tank should be about 2/3 full of media, do not fill more than 2/3
full, even if there is media left over.
4. Remove tape from top of distributor tube. Be careful not to pull up distributor tube when
removing tape.
5. If possible at this point, fill the tank completely with water. This will allow the Pro Ox 5900e-AIR
media to settle and eliminate the need of “purging” the air out of the tank later.
6. Add a small amount of silicone grease to the tank threads and both o-rings on the bottom of the
control valve and screw on 5900e control valve carefully. Do not use pipe-joint compound,
vegetable oil, Teflon tape, or Vaseline or other petroleum greases to lubricate tank threads.

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Fig 5: 5900e Bypass with Barrels Fig 6: Bypass with steel mounting clips
Assemble the bypass valve:
7. When you remove the bypass valve from the box, the valves are in the open position. Holding
the bypass so that you are reading the In and Out (so that the words are not upside down to you
when holding the bypass), note the following:
8. The red handles are slightly arrow-shaped; the pointed end is pointing in the direction of flow
when open. The Inlet valve (on the left) turns clockwise, from full open at “12:00 o’clock”, to
fully closed at “3:00 o’clock”. The Outlet valve turns clockwise from “6:00 o’clock” full open to
“9:00 o’clock” full closed. The valves are stiff when new, so open and close them a few
times. Leave them closed for now.
a) Choose which yoke (3/4” or 1”) you wish to attach to the back end of the
bypass. Remove the barrels (Figure 5) and apply a small amount of silicone
lubricant to each of the O-rings (two on each barrel, four total) Push the
barrels back into the bypass, and push the yoke onto the barrels. Attach the
steel mounting clips on each side and screw in the two screws (Figure 6)
b) If the valve to which you are attaching the bypass has a flow sensor (see
picture), lube the two O-rings and push the bypass assembly onto the flow
sensor, and attach the steel mounting clips and screws.

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c) If the valve you are attaching the bypass to does not have a flow sensor, then it has the same
type of barrels that are on the opposite side of the bypass. Take out the barrels and apply
silicone grease to all four o-rings and push in the barrels and attach the bypass. See above
picture for example of silicone grease and what an o-ring looks like.
9. Now install your water pipes to the 5900e bypass end connectors. Make sure inlet is installed to
the 'In" pipe connector on the bypass valve and outlet is on the “Out” connector.
10. Assemble the Drain Line Flow Control (DLFC) Fitting: A ½” MPT X 5/8” OD Barb is included.
Using three wraps of Teflon tape and some Teflon paste on the ½” thread, and screw that into
the Drain Line Fitting. This is located on the side of the valve; it is removed by pulling out the
black clip. The DLFC is a black rubber washer with a hole in it- refer to the table on page 15 to
determine which DLFC to install. If your unit backwashes at 10 or 12 GPM’s, you will still
assemble the fitting, but you will not install a DLFC (they only go up to 7 gpm).
11. Connect some flexible tubing from the drain connection on the 5900 control valve to a suitable
drain such as a septic tank or drain to a sewer. It is OK to run the drain line up and over the
5900 Pro Ox 5900e-AIR up to 4 feet above the top of the tank. If the drain line will be more than
20 feet, use larger diameter tubing such as ¾” or 1”. Note that it is desirable to be able to run
the drain line into a bucket in order to test the backwash flow rate in the future. This is why
hard piping the drain line is discouraged: however, if you do use hard PVC piping for the drain
line, and you are able to remove the hard PVC drain piping and attach flexible tubing should you
ever desire for testing purposes, it is OK to use rigid PVC pipe for the drain. Make sure the drain
tubing is firmly clamped to the barbed fitting with a hose clamp to prevent leaks.

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Assemble The Drain Line Flow Control Hose Barb:
1.0 CF
7 GPM
1.5 CF
10 GPM
2.0
12GPM
12. Remove the clip and the Drain Line fitting (Upper left). Add Teflon tape and paste (Upper right).
Install DLFC Button (Lower left). Re-install Drain Line Fitting and put clip securely in place.
(Lower right). Choose which DLFC Button to install based on the cubic foot size of your system
(see table). Note: There is only a 7 gpm button, the larger systems do not have a button.
13. Next, you will need to program the system to work as a Pro Ox 5900e-AIR Filter. There are a few
settings that must be changed before the system can be put into service. Plug in the control
valve and continue on to the next page to begin the programming instructions.

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Programming Your Valve
*While scrolling through numbers, it only increases the value. To decrease the value,
you will have to “go all the way around” to get back to a lower value.
1. To enter main menu press the Menu/Enter button
(Time of day will flash)
2. To set time of day press the Set/Change button
(First digit will begin to flash)
- To change digit value press the Set/Change button
- To accept the digit press the Menu/Enter button
- (Next digit will flash)
- (Once hours is accepted all digits will flash)
3. With all digits flashing press the Menu Button to set A.M. or P.M.
- (Once A.M./P.M. is accepted the next menu item will flash) Example [ A ]
4. To Set Regeneration Frequency Press the Set/Change Button
- The recommended initial setting for a Pro Ox 5900e-AIR filter is every 4 days
- Once the last digit is accepted all digits will flash Example [ A - 04 ]
Notes: -Maximum Value is 29
-If value is set to 0, automatic regeneration will never occur
-One cycle must be completed before new setting will be accepted.
5. To Set the Number of Days between Air-Draw Cycles (d) Press the Set/Change Button
1) Set to 1 day, to regenerate the system with new air daily. Example [ d - 01]
2) During this process, the valve will use a little bit of water to create suction in order to
regenerate the air, and will make some noise during this cycle. However, the valve will still
backwash on the days that you have programmed it to.
2) If Value Set to 0, Air-Draw is Turned Off, but an Air Cycle will still be Completed when a
Regeneration Cycle Occurs. If the Number of Days between Air-Draw Cycles is set to a Higher
Number of Days than the Number of Days between Regeneration Cycles, it will have No Effect.
In Order to turn Off All Cycles, both the Days between Regeneration and Days between Air-Draw
Cycles must be set to 0.
6. To exit menu press the Menu/Enter button
Note: If no buttons are pressed for 60 seconds or longer the menu will automatically be
exited.

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Next you will need to set the Master Programming to be used as a Pro Ox 5900e-AIR filter,
continue on to the Master Programming to finish the programming instructions.
Master Programming Mode
Entering Master Programming Mode
-To enter Master Programming Mode press and hold both buttons for 5 seconds.
1. Regeneration Time (r)
Press the Menu/Enter Button. The next display viewed is the option setting for
Regeneration Time. It is identified by the letter ‘r’ in the left digit. Set the desired time
of day that a regeneration may occur, when required. We recommend setting the
system to backwash at 2 AM, or at any time that it is unlikely that any water will be
used. The first digit(s) indicates the Hour and the other digit indicates A.M. or P.M.
Example: 2 A.M. regeneration time - [ r 2A ] (factory setting)
2. Regeneration Cycle Step Programming (2)(3)(4)(5)
The next 4 displays viewed are part of a series of option settings used to program the
Regeneration Cycle. Up to 4 steps can be programmed, however, some steps may not
be necessary for your application and will be set to 0. Additionally, Step 1, the air
release, is not programmable, and therefore will not be displayed for programming.
Each display is used to set the duration time in minutes for that specific step in a
regeneration cycle. A step # will turn on for the regeneration cycle step being
programmed. Regeneration steps are skipped by setting the display to 0 as shown
below:
Examples: Regeneration Cycle Step #2 - 10 minutes - [ 2 - 10 ] (Factory Setting)
Regeneration Cycle Step #3 - skipped - [ 3 - 00 ]
Set each step according to the values below, appropriate for a Pro Ox 5900e-AIR filter:
1Not Programmable. This is the Air Release cycle. [ Not Displayed ]
210 minutes. This is the Backwash cycle. [ 2 - 10 ]
30 minutes. This is the Brine Draw cycle, not used on your valve. [ 3 - 00 ]
412 minutes. This is the air-draw cycle. [ 4 - 12 ]
56 minutes. This is the Rapid Rinse cycle [ 4 –06 ]
bE This menu option is for process control applications not used on your Valve.
It will say either 0 or 1, and you do not need to change it.
bttPP This menu option goes with the above, it is not used. It will briefly display 1234 and then
the digital display will return to Service Mode.

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Note on Air-Draw Cycle (5):
The longer the unit is set to remain in the air-draw cycle (5), the more air is drawn into the
system. A default setting of 12 minutes draws air down to the level of a normal media bed
height and then returns the unit to the home display. If the system needs more air, increase the
time setting for step (6). There is no way to view the number of days until the next air draw will
take place.
Exiting the Master Programming Mode
Press the Menu/Enter Button until all steps have been viewed. The Program Mode will
be exited and normal operation resumed. If no buttons are pressed for 60 seconds or
longer in Master Programming Mode it will be exited automatically.
Lastly, you will need to perform an initial backwash to finish setting up the filter and getting it ready for
use, continue on to the next page.
Initial Backwash
MAKE SURE THE SOUCE WATER ENTERS THE INLET PIPING!
MAKE SURE THAT BOTH THE INLET AND OUTLET VALVES ON BYPASS ARE CLOSED!
1If days remaining is not already at 1 press and hold the Set/Change button. Now, press and
hold the Set/Change button again, until the valve begins the backwash cycle and the display
reads 1 [1- 00]. This is the step that releases the air and is not programmable- press the
Set/Change button when it starts this cycle, which will advance the piston to cycle step 2.
Now, proceed to step two.
2Start to put the valve into the service position by turning the inlet the bypass knob counter-
clockwise about a quarter inch, until you can hear water passing through the bypass into
the filter. Stop and wait until you see water coming out of the drain line. It will often be
mixed with air bubbles, and we must purge the air out. When you do not see bubbles
anymore, keep opening the valve, a little bit at a time, stopping for a minute or two each
time. You want to see a corresponding increase in flow out of the drain line as you increase
the flow of water into the filter. After several minutes, you should have the valve fully
open, and with no media coming out. The water will be black, turning to gray, mostly clear
water- the water does not get crystal clear in the Backwash mode (only at the end of Rapid
Rinse and during Service).
If possible verify that the backwash flow corresponds with the size of your system below. You can easily
run the drain hose to a bucket and using a watch verify the flow rate in gallons per minute. An adequate

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backwash is critical to properly clean the Pro-Ox media and prevent it from becoming fouled and then
allowing iron past the filter.
1.0 CF
7 GPM
1.5 CF
10 GPM
2.0 CF
12 GPM
3Once the water is mostly clear, press and hold the Set/Change button, and after 3 seconds the valve
will start to advance to the “Rinse” position. Once again, allow the water to flow for about five
minutes or until the water is clear. Note: It may take longer than the ten minutes that are
programmed for this step (BW) before you have the valve opened all the way- simply
unplug the power supply from the wall when there are still a couple minutes remaining;
when you are ready to continue, plug the valve back in, and it will return to where it was.
4Let the unit do the Rapid Rinse cycle and advance to the “Service” position. Next, open the
outlet on the bypass valve and then open the nearest treated water faucet to the unit and
allow the water to run until it is clear. We advise using a bathtub, laundry sink, or other
fixture that does not have an aerator screen as any remaining residue may get caught in the
screen.
Congratulations, you are done setting up your valve!
Maintenance
Normal Operation
-Normal display alternates between time of day and days until regeneration.
-Days remaining until the next regeneration will count down from the regeneration day
override value to 1 day remaining.
-Once the count reaches 1, a regeneration cycle will be initiated at the next designated
regeneration time.
Battery back-up (this unit uses a standard 9 volt alkaline battery)
-Installing the battery
-To install the battery the back-cover must be removed by removing the two back-cover
screws.
-Next insert the battery into the battery holding clip and snap the 9 volt battery
connector onto the battery.
-Replace back-cover
-Features of battery back-up
-The battery back-up maintains the time of day during power failures.

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-The battery back-up continues to count down gallons remaining during power failure
(Metered Version)
Note: During power failure to conserve battery power the display is turned off.
However, to confirm that the battery is working you can press either button and the
display will turn on for five seconds.
* Menus cannot be accessed during power failure
* If a power failure occurs while the valve is in regeneration the regeneration
will resume operation once the power is restored
How To Start An Extra Regeneration Cycle
1. Starting delayed extra cycle
-If days remaining is not already at 1 press and hold the Set/Change button.
-After 3 seconds the days remaining display will read: [ 1 ]
-Regeneration cycle will be initiated at the next designated regeneration time
2. Starting Immediate Extra Cycle - First, complete above delayed cycle step
-With days remaining at 1 press and hold the Set/Change button
-After 3 seconds the regeneration cycle will begin.
3. Fast Cycling Through Regeneration
-First complete above immediate cycle steps
-Press and hold the Set/Change button
-After 3 seconds the valve will start to advance to the next step
Troubleshooting the 5900 Pro Ox 5900e-AIR Filter
Backwash Flow Rate
One problem that may occur is if you do not have enough backwash flow rate to properly clean
the Pro Ox 5900e-AIR filter. You can verify the backwash flow rate by running the drain line
into a bucket and timing it when the 5900 is in backwash. A 0.75 CF system should have 5 gpm,
a 1.0 CF system should have 7 gpm, and a 1.5 CF system should have 10 gpm for the backwash
cycle.

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Error Codes
There are five (5) error codes that could indicate a possible problem with the control valve:
Error 2 - Homing slot expected. Valve will start looking for home.
(Normal operation continues)
Error 3 - Encoder is not sending a signal
(Valve requires service to continue)
Error 4 - Unable to find homing slot
(Valve requires service to continue)
Error 5 - Motor overload (stalled position or shorted motor)
(Valve requires service to continue)
- New 5900e programming is identified by "r2.1" in presentation upon power up.
What To Do If Your Filter Tank Does Not Sit Level On the Floor
Your black filter tank base is not glued to the bottom of your tank. Occasionally tank bases will
become crooked during shipment. If you find that that your tank does not sit level on the floor,
you can easily adjust it by holding the empty tank and rapping it on a concrete or solid floor
once or twice in order to level it.
How To Remove Media From Control Head
Sometimes, when doing the Initial Backwash, the media gets lifted up into the control head. You can tell
this happened because you will have little or no flow, either going out to drain while in the backwash
positon, or when in the service positon.
To remove media from a control head, do the following:
1) Put the Inlet Bypass in the Closed position.
2) From the Service Mode, initiate a manual regeneration, by pressing and holding the regen button
(button on far left).
3) The valve will advance to the BW (backwash) position, and start counting down. Press the Regen
button again, and wait for the valve to advance and stop at the Rapid Rinse (RR) position.
4) With the valve in the RR position, open and close the Inlet Bypass valve several times. After the third
or fourth time, leave it in the open position and check the drain line- do you have a good solid flow?
90% of the time, the answer is yes, but sometimes, even after opening and closing the valve many times,
you still don’t have good flow… But, in either case (good or no flow), continue…
5) With the Inlet Valve OFF, Advance the valve back to Service position again, and again press and hold
the Regen button, we are putting the valve back to the Backwash position.

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6) Open the Inlet valve just enough so you can hear the water passing thru the valve- you should notice
a corresponding slow flow out of the drain line. After a minute, if there are no air bubbles present, open
the valve about another quarter inch- again, you should see a corresponding increase in the flow… And
you will continue until the valve is full open.
IMPORTANT:
Any time that you are in the Backwash or Rapid Rinse position, you may need to unplug the power- this
will hold the valve in its current position, so it doesn’t ‘time out’ and go to the next position. When you
plug the valve back in, after a minute it will return to where it was when you unplugged it (i.e. 2:32
remaining in BW). Understand, it is not possible to jam media into the head while in Rapid Rinse, or
Service, just in the Backwash, when the flow direction is reversed.
What you are trying to accomplish, after you have pushed the media back in to the tank in the Rapid
Rinse position, is to get the Inlet valve all the way open in the Backwash position, without it jamming
media back in the head, and this is the part where you have to go slow, open up the Inlet valve a little
bit at a time and let it run for a few minutes- this is why you may have to unplug it- and then, once you
have done that, finally, do one more backwash, starting with the Inlet valve open, just as it will be when
it does it automatically at night. Once it does that successfully, you are done.