Operating instructions

SECTION 8: MAINTENANCE
Depending on your water quality, it may be necessary to perform maintenance on your fi lter system in order to ensure
continued performance. This is to both low pH, high manganese and the sacrifi cial nature of the fi lter media. The severity of
your pH or the amount of water used will determine how often the fi lter will need to be serviced. To correct this condition, it
will be necessary to add MPH adder to the fi lter bed. The part number is MPH04, and can be purchased as a single unit or in
a case of 6, which is MPH0406. Either of these items can be purchased through our wholesale chain in your area. MPH0406
is a 3 ½ pound jar of pH boosting material that replenishes the same material that was dissolved into your water to make
Iron and Manganese reduction possible.
CUNO Incorporated recommends that you test your treated water pH once a quarter. When Iron is the only problem, a water
pH needs to be 7.2 higher. When Manganese and Iron are present, the treated water pH needs to 8.2 or higher. The levels
can be checked on location with the use of an inexpensive pH test kit that can be purchased locally or from CUNO. Our part
number is “17N” . When the pH falls below the recommended level and Iron or Manganese is bleeding through into the
fi nished water, it is time to add the MPH adder component to the fi lter. The amount of material to add to a fi lter is as follows.
Standard bed fi lters (identifi ed by an “S” in the model number, i.e. APIF100 or no “S”, i.e. MCIF1001)
1- 3 ½ pound jar of MPH adder for each cubic foot of fi lter material
Manganese bed fi lters (Identifi ed by an “M” in the model number, i.e APIF100M or MCIF1001M)
2- 3 ½ pound jars of MPH adder for each cubic foot of fi lter material.
Bed Type
Filter Models
(Number of Jars to Add)
Standard Filter Media
MCIF0751
APIF075
(1)
MCIF1001
APIF100
(1)
MCIF1501
APIF150
(1 ½)
MCIF2001
APIF200
(2)
MCIF3001M
APIF300
(3)
Manganese Filter Media
MCIF0751M
APIF075M
(1)
MCIF1001M
APIF100M
(1)
MCIF1501M
APIF150M
(1 ½)
MCIF2001M
APIF200M
(2)
MCIF3001M
APIF300M
(3)
Step by step procedure to add MPH adder to your Chem-Free Free Iron Filter.
1) Turn the inlet and outlet knobs of the bypass valve located on the back side of the control valve.
See fi gure 4 in section 3 for proper orientation.
2) Manual initiate a backwash cycle to relieve water pressure from the inside of the fi lter.
3) Disconnect the drain line and set aside.
4) Remove the latch on the clamp assembly and separate the clamp assembly. Set aside in a
secure location for reuse.
5) Slowly lift the control valve straight up and off the fi lter vessel. Do not rock the control from side
to side as this might damage the controller or distributor tube.
6) Using the funnel and centering device supplied with the unit originally, install over the
distributor tube and inside the opening of the fi lter vessel to aid in adding the MPH adder
material.
7) Using a ½ diameter fl exible tubing siphon about 12” of water from the fi lter vessel to allow for
adding the MPH adder.
8-1