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A final prompt is displayed PASS WATER QUALITY. Depress to accept water
quality. This acknowledges acceptance that the samples have passed water
quality test (see above). If water does not meet standards additional rinses are
preformed until it does.
If any alarm messages are displayed during the clean then refer to the fault
finding section in this manual.
8.3
APPROVED CHEMICALS
AmeriWater supplies a comprehensive range of chemicals for management and
cleaning of RO membranes and distribution loops. Clean with AmeriClean B first
then A.
The following chemicals are approved for use on the
MediQA:
AmeriClean A
This is a low pH RO membrane cleaner to remove hardness scale and iron oxide
deposits.
To test for the presence of AmeriClean A in permeate, check that the
conductivity is less than 30μS/cm and pH is at or near 7.
AmeriClean B
This is an alkaline liquid cleaner containing organic sequestrant, inorganic
sequestrant, detergent and emulsifiers. AmeriClean B is used for removing
organics, Silica, inorganic colloids, and biological material.
To test for the presence of AmeriClean B in permeate, check that the
conductivity is less than 30 μS/cm and pH is at or near 7.
NOTE: Always refer to Safety Data Sheets before handling any of the
cleaning chemical products. Wear the safety equipment recommended.
Follow the instructions on the pack.
8.4
RO HEAT DISINFECTION PROCEDURE
A heat disinfection routine is provided to kill waterborne bacteria. Heat
disinfection, when completed regularly, reduces the potential for harmful biofilms
to generate within the machine pipe work and system components.
The MediQA unit can be set up to complete automatic heat disinfections or heat
disinfections can be started manually.
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