Specifications

23G-Series RO System
3024270 Rev G 24 14Oct13
3.0 PREPARATION AND START-UP
3.1 Pretreatment for Water Purification
Mar Cor Purification 23G machines will operate most efficiently on filtered
water with a pH less than negative concentration LSI (Langlier Saturation
Index) and a Silt Density Index (SDI) of 3 or below. If the machine is
operated on water with higher pHs, other forms of pretreatment may be
necessary. A water analysis prior to start-up of the machine is required. To
minimize the chances of calcium carbonate, calcium sulfate, or other
mineral precipitation on the membrane, your equipment supplier will
evaluate each application and water condition and make specific
recommendations to ensure continuity of membrane element warranty.
Data from the water analysis is analyzed to determine if potential
problems may exist. If the machine is to be run at a different location than
was originally intended, a new water analysis is required for warranty
consideration and should be sent to your equipment supplier for review
and recommendations for operation of the machine.
Before installing the machine, the feedwater must be filtered to 5 microns.
Machine feedwater must not contain the following chemicals or permanent
loss of rejection and/or permeate flow may result:
• free chlorine
• cleaning chemicals, biocides or sanitizing agents, such as formalin or
peroxide peracetic acid type products.
NOTE:
Flush system to drain under normal pressures for a minimum of one (1) hour
before exposing membranes to Minncare
®
. Flush system to drain under normal
pressures for a minimum of six (6) hours before exposing membranes to
formaldehyde.
• iodine compounds
• quaternary biocides
• cationic surfactants
• detergents containing non-ionic surfactants
• cleaners not approved by Mar Cor Purification
NOTE:
A water softener should not be regenerated while the machine is running unless
safeguards such as a duplex softener are used to be sure the machine is
operated on softened water during regeneration. The machine has a
Pretreatment Lockout feature which can be used to shut the machine off during
regeneration.