Nu-Calgon Product Bulletin
3-20
Ice Machine Filtration
• Eliminate lime scale formation
• Remove silt, sediment and other suspended
matter
Micro-Plus® Treatment
• Remove chlorine and other objectionable
tastes and odors
• Complete treatment for up to six months
Description
More than a filter, more than a feeder, Micro Plus is the
complete treatment program for commercial ice makers,
coffee urns and brewers, beverage machines and other
water-using equipment such as humidifiers, steamers and
residential refrigerator ice makers.
Application
Micro-Plus Treatment Systems are available in a variety of
size capacities, from the Micro-Plus 2, which can be used
on equipment using up to 12.5 gallons of water per day, to
the Micro-Plus 16 for treating up to 100 gallons of water per
day. Micro-Plus systems are designed and manufactured
to eliminate or control the three primary water-related
problems: lime scale, silt and sediment, and objectionable
tastes and odors encountered in ice makers, coffee urns
and other equipment. These problems all reduce the
designed capacities of this equipment, and they cause
operation and service costs to increase.
Lime Scale:
All water supplies contain hardness and alkalinity minerals.
Without proper treatment, these minerals will cause lime
scale formation in ice makers, coffee makers, humidifiers,
etc., equipment that allows for the freezing or heating of
the water.
Solution:
Micro-Plus contains 6R Micromet®, an NSF-Listed, foodgrade slowly soluble polyphosphate, which dissolves
slowly into the water and stabilizes the hardness minerals,
thereby preventing scale formation.
Solution:
Micro-Plus is equipped with a 100 micron screen to prefilter the water as it enters the device and a 20 micron
filter disc to filter the water as it leaves the device. This
graduation of micron filtration (100 micron to 20 micron)
enhances the devices service life in waters containing
a high level of suspended particles, yet still provides 20
micron water.
Objectionable Taste and Odor:
Compounds such as chlorine and hydrogen sulfide cause
bad tastes and odors. In addition, chlorine can be
corrosive and it can also inhibit or reduce the carbonation
of water in beverage machines.
Solution:
Micro-Plus contains the best available activated carbon
for absorbing these contaminants. It will remove these
objectionable tastes and odors, providing quality water
or ice.
Packaging
2
4 8
16
4615-W3
4612-W3
4613-Y8
4614-Y8
Silt and Sediment:
Micro-Plus
Micro-Plus
Micro-Plus
Micro-Plus
When a water supply contains suspended matter, this can
be troublesome in all types of equipment. The suspended
particles will plug solenoid valves, distribution lines, small
orifices.
Tested and Certified by NSF International against ANSI/
NSF Standard 42 for Odor and Taste Reduction, Chlorine
Reduction.
2008 Altom Ct. • St. Louis, MO 63146 • 800-554-5499 • www.nucalgon.com
Calgon is a licensed trade name • (116) 3-20
HOW DOES MICRO-PLUS® WORK?
CUSTOM MOLDED
HOUSING
The housing is constructed of a
P.V.C. material which meets FDA
and NSF standards for use in
drinking water systems.
FOURTH STAGE
A high density polyethylene
filter disc that traps
suspended particles as
small as 20 microns.
THIRD STAGE
Special blend of a highly absorbent activated
carbon. This carbon has the ability to absorb
larger amounts of chemicals such as chlorine
and ammonia so that there is no unpleasant
taste or odor in the water used to make your
beverages or ice.
SECOND STAGE
The second stage is a lime scale inhibitor. These crystals
are FDA and NSF approved food grade hexametaphosphate
crystals which slowly dissolve into the water and inhibit the
formation of lime scale or calcium deposits. This is done by
keeping the hardness particulates separated so they do not
precipitate and form deposits in the equipment.
FIRST STAGE
Inlet is a 100 mesh polypropylene screen that traps large
particles above 100 microns. This unique feature allows
smaller particles to be trapped within the filter itself so
that the inlet will not become prematurely clogged.
DEFLECTOR
This device has been designed to
direct the water flow evenly across
the filter bed, thereby eliminating
the potential for “channeling.”
How to Select The Correct Micro-Plus Device:
Whether you are going to treat an ice maker or a humidifier, the key to selecting the proper Micro-Plus is the amount of
water to be treated per day. In the case of ice makers and coffee urns, this can also be addressed in terms of pounds of
ice made per day or pounds of coffee per week. Simply consult the chart below:
APPLICATIONS
Number
Systems
4615-W3 MICRO-PLUS 2
4612-W3 MICRO-PLUS 4
4613-Y8
MICRO-PLUS 8
4614-Y8 MICRO-PLUS 16
TREATMENT CAPACITIES
Operating
Operating
Temperature Pressure
Min./Max
Min./Max
40°-80°F
40°-80°F
40°-80°F
40°-80°F
20-125
20-125
20-125
20-125
psi
psi
psi
psi
Gallons
per Day
Ice Makers
Coffee Makers
12.5
25
50
100
Up to 125 lbs. of ice/day
Up to 250 lbs. of ice/day
Up to 500 lbs. of ice/day
Up to 1000 lbs. of ice/day
25 lbs. of coffee (1,250 cup)/wk.
50 lbs. of coffee (2,500 cups)/wk.
100 lbs. of coffee (5,000 cups)/wk.
200 lbs. of coffee (10,000) cups)/wk.
All are equipped with 1/4” FPT connections, and this allows for the selection and use of compression or flare fittings, or “quick-disconnect” plug fittings.
Chlorine Reduction
As part of the NSF testing procedure, the Micro-Plus units were challenged by a highly chlorinated test water. As shown
in the Reduction Table below, this water contained 2.0 mg/l (2 ppm) of chlorine, which is approximately 10 times the level
of available chlorine seen in typical water supplies. Since the normal amount of chlorine is 0.1-0.2 ppm, the efficiency
of chlorine removal (% reduction) in the normal or typical installation will be nearly 10 times greater than shown in the
effluent tests below, resulting in an average chlorine affluent (amount allowed through the filter) of less than 0.1 ppm.
REDUCTION TABLE
Model
Contaminant
Micro-Plus 2
Chlorine
Micro-Plus 4
Chlorine
Micro-Plus 8
Chlorine
Micro-Plus 16
Chlorine
Average
Influent
2 mg/l
2 mg/l
2 mg/l
2 mg/l
Percent
Reduction
63%
79%
93%
93%
Average
Effluent
0.7 mg/1 (ppm)
0.43 mg/l (ppm)
0.13 mg/l (ppm)
0.13 mg/l (ppm)
NSF Standard 42
Reduction Class
Class II
Class I
Class I
Class I
Test Parameters: Influent Challenge: pH 7.5 ± 0.5, temp 68°F ± 5°F, (20°C ± 3°C), Pressure 60 psig.
Installation
General Installation/Operation Conditions
• Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or
after the system.
•
Installation must comply with state and local laws and regulations.
•
Filters may be installed in any convenient location.
•
Be sure to keep filters away from any heat source.
•
Filters must be changed every six months or when capacity expires, whichever comes first.
•
The standard period for storage and preservation of filter products is one year. This is simply a precaution, as under
normal conditions these filters should last indefinitely.
Installation Steps
1. Shut off water.
2. Disconnect existing filter or cut water line where filter is to be installed.
3. Install compression or flare fittings, or “Quick Connect” fittings.
4. Use Teflon tape or equivalent where appropriate.
5. Insure proper direction of water flow and connect inlet. USE TWO WRENCHES.
6. Flush 5-6 gallons of water to drain as described above.
7. Turn off water and connect outlet. USE TWO WRENCHES.
8. Carefully turn on the water and check for leaks.
9. Check the filter after approximately 8 hours for slight leaks not visible during initial installation.
Special Notes on the Equipment to be Treated
Ice Makers:
Ice makers, both cubers and flakers, can be troubled by all three water-related problems. They are almost always
troubled with scale since all water supplies contain some hardness and alkalinity minerals. Both air-cooled and watercooled machines will need treatment. In the case of water-cooled machines, be sure to treat only the water being made
into ice.
Coffee Urns, Coffee Brewers:
This type of equipment is mostly troubled with scale formation on the heating elements and the presence of chlorine
which can effect the taste of the coffee.
Water Fountains:
These water using systems are usually troubled with objectionable tastes and odors, and occasionally silt and sediment.
Micro-Plus will effectively remove those objectionable tastes and odors as well as silt and sediment.
Humidifiers:
Humidifiers are used to add moisture to ambient air. As a result, the water is changed in state from a liquid to a vapor,
and scale is a definite problem. Humidifiers can be treated effectively with Micro-Plus, some form of a dump or bleed
should be utilized.
MICRO-PLUS CARTRIDGE DIMENSIONS
#4615-W3 – (Length 6.25˝, Diameter 2.09˝ )
#4614-Y8 – (Length 14.125˝, Diameter 2.59˝ )
#4612-W3 – (Length 10.25˝, Diameter 2.09˝ )
#4613-Y8 – (Length 11.375˝, Diameter 2.59˝ )
Read and understand the product’s label and Safety Data Sheet
(“SDS”) for precautionary and first aid information.
The SDS is available on the Nu-Calgon website at www.nucalgon.com.
2008 Altom Ct. • St. Louis, MO 63146 • 800-554-5499 • www.nucalgon.com
Calgon is a licensed trade name • (714) 3-20
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