I. Installation Requirements
CMTRO-75™ RO system, Model CMTRO-75 can be used with most coolers that include a storage tank. Check the
guidelines below to confirm that the CMTRO-75 system you have selected is the correct system for your water
conditions and water quality requirements.
Feedwater Criteria
Model
Total Dissolved
Solids
Hardness
pH
Temperature
Free Chlorine
Iron
Manganese
Hydrogen
Sulfi de
Water
Pressure
Daily
Production*
CMTRO-75
< 2000 ppm
< 350 mg/l
4 - 11
40 - 100°F
(4.4 - 37.8°C)
< 1 mg/l
< 0.1 mg/l
< 0.05 mg/l
none
allowable
40 - 100 psi
(276 - 689 kPa)
23.59 gpd
(89.3 lpd)
per cartridge
*
Systems are rated at 77°F (25°C), 60 psi (414 kPa), 500 ppm TDS. Actual production rate will depend on local
temperature, pressure, TDS level and membrane variation. Membrane output is affected by 1.5% for each degree
above or below 77°F (25°C). Lower temperature means less output, higher temperature means more output.
(However, systems
must not
be installed or operated on hot water lines. Observe temperature limits above).
Membrane output is also affected by water pressure.
II. Installation Procedure
Installing the filters.
Remove the CMTRO-75 filter cartridges from their sealed sanitary packages. Note that the “ears” on each cartridge fit
into slots on the receptacles. Moisten the o-rings with water and twist each cartridge slightly while inserting them into
the receptacle. The filters lock into place when pressed completely into the receptacle, and turned 1/4 turn to the right.
Be sure to match icons on the cartridges with the icons on the receptacles. This will ensure that you put the filters in
the correct position. Installation must comply with state and local plumbing codes.
Mounting the system.
Mounting with bolts, screws, or studs (recommended).
1. There are two slots with keyholes to provide a variety of options for bolting or hanging the CMTRO-75 system on
the cooler. In some cases existing screws can be used. Further, there are keyholes for those who desire to install studs,
bolts, or screws at the required spacing to allow easy removal of the entire system.
Make tubing connections
With the CMTRO-75 system fastened to the cooler, the tubing connections can be made. All connections are made
with “Push-In” connectors. Refer to the diagram below and instructions on use of the “Push-In” plastic fittings. Use
care in routing the tubing to ensure that there are no sharp bends or kinks in the tubing.
1. Connect 3/8" yellow tubing from bracket (labeled tank) to storage tank.
2. Take 1/4" green tubing & RO Brine Flow control and insert the RO Brine Flow Control in one end of the 1/4"
green tubing (as shown in Figure). Insert the end of the tubing with the flow control into the drain connection.
3. Install other end of the long green tubing to drain. Be sure there is a proper air gap between the system & drain
lines and that local & State plumbing codes are followed.
4. Connect orange tubing from water supply to inlet port on bracket head.
5. Connect 3/8" blue tubing from outlet port on head assembly to cooler float/solenoid/reservoir fill connection.
We recommend the use of high quality tubing. The dimensional inconsistency of low quality tubing can cause leaks at
the“Push-In” fittings. We also recommend the installation of a ball valve at the point where you tap into the main water
line.
3
CAUTION
To reduce the risk associated with property damage due to water leakage:
•
Do not
install near water pipes which will be in path of a drilling tool when selecting the position to mount the bracket.
• Mount
fi lter in such a position as to prevent it from being struck by other items used in the area of installation.
• Ensure that the location and fasteners will support the weight of the system.
