20
DRISTEEM RO 200 SYSTEM WATER TREATMENT SYSTEMS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Maintenance information
MAINTENANCE TIPS
Maintain proper operating conditions:
• Do not exceed 90 psi (620 kPa) on the fi lter inlet pressure reading.
• Do not over use recirculation fl ow. This can cause premature scaling of the
membrane. A proper concentrate fl ow is required for a long membrane life.
See page 3 for maximum recirculation fl ow.
• To ensure no chlorine reaches the RO membranes, test the water from your
dechlorinator periodically for chlorine break through.
WHEN TO CHANGE SEDIMENT AND CARBON FILTERS
Sediment and carbon fi lters should be changed regularly to maintain proper
pressure and fl ow and water quality.
Change the carbon fi lter when chlorine from supply water starts to pass
through. The carbon fi lter removes chlorine. Check regularly for chlorine pass
through. To check for chlorine, obtain a water sample from the concentrate
drain line and test the water. If chlorine is present, change the carbon fi lter and
record the interval to estimate the next carbon fi lter change.
Change the sediment fi lter when the difference between fi lter inlet pressure and
fi lter outlet pressure increases by 10 psi over the initial pressure difference.
For example, if initial readings are 60 psi in and 58 psi out, the difference is
2 psi. Therefore, when that difference reaches 12 psi, it is time to replace the
sediment and carbon cartridges.
CHANGING CARTRIDGE FILTERS
1. Put the system into 'Standby' mode and shut down the RO system.
2. Close inlet supply valve.
3. Un-assemble the filter housing (twist the sump counter-clockwise).
4. Remove and inspect the cartridge. Replace as needed.
5. Before replacing housing, insure that O-ring seal is lubed and placed in
groove of housing. Inspect seal and replace as needed.
6. Assemble housing (turn the sump clockwise into the cap until tight).
Important:
Verify regularly that water processing equipment is operating
correctly. The presence of chlorides in improperly process deionized water will
eventually cause pitting and failure of the equipment the RO system is servicing
and its components. Damage cause by chloride corrosion is not covered by
your DriSteem warranty. The RO system has an automatic drain sequence
(ADS) set based on default supply concentration of 20 ppm. Adjust ADS to
actual supply water connection.
FIGURE 20-1: SEDIMENT FILTER
DriSteem replacement part
• 2.5" x 10" - (part number: 550030-002)
MAINTENANCE
FIGURE 20-2: CARBON FILTER
DriSteem replacement part
• 2.5" x 10" - (part number: 550030-003)
CAUTION
Chlorine can damage the membrane.
A carbon pre-fi lter is installed to
remove chlorine from fee water. Care
must be taken to change this carbon
fi lter as needed to accomplish effective
chlorine removal. Excessive chlorine
in feed stream may require additional
pre-fi ltration. The feed stream should
be tested for chlorine at least once
a week. Always follow proper
maintenance procedures.
