Specifications

23G-Series RO System
3024270 Rev G 57 14Oct13
8. Observe and record the percent rejection and permeate
conductivity displayed on the ECM-100 display.
9. Measure and record the feed water temperature on the Operation
Log. A hand held thermometer may be used. The water
temperature has a significant effect on the flow rate of the RO
membrane.
10. Flushing
The machine should be flushed daily to remove sediment from
membrane surfaces. For flushing during on-line operation all Mar
Cor Purification 23G machines are equipped with an Autoflush
feature, which automatically increases the concentrate flow rate on
an intermittent basis.
5.2 Weekly Requirements
The actions below should be performed in addition to the daily
requirements.
1. Observe and record the permeate conductivity using a hand
held/independent meter. Recalibrate ECM-100 as necessary.
2. Observe and record inlet pH. Recalibrate ECM-100 as necessary.
5.3 Monthly Requirements
1. Replace pre-filters monthly or when pressure drop doubles from
new conditions. Refer to pre-filter replacement procedure (Section
5.11).
2. Disinfect the RO machine. The RO machine should be disinfected
monthly after initial start up. As the system is operated for a period
of time, it may be possible to extend the period of time between
disinfections (under NO conditions should the period between
disinfections exceed 3 months). Each facility will have to monitor
the bacteria levels in the RO to determine the ability to extend the
disinfection frequency. Reference the membrane disinfection
procedures in Section 4.4. For enhanced effectiveness and
efficiency, it is recommended that the user combine the disinfection
of the RO with the disinfection of the Storage Tank and/or Loop by
following TechNote 191.
NOTE:
The monthly disinfection process can be performed without a low pH cleaning of the RO
system if the feed water to the RO machine is treated with a water softener and daily
maintenance logs reflect that output of the softeners at the end of the operational day
does not contain hardness. If there is not a softener as part of the RO pre-treatment, a
low pH cleaning of the RO system must be performed prior to the disinfection.