3.0PREPARATION AND START-UP
3.1Pretreatment for Water Purification
All systems will operate most efficiently on filtered water with a pH of less than 6.5 and a Silt Density Index (SDI) of 5 or below. If the machine is operated on higher pH water, other forms of pretreatment may be necessary. A water analysis prior to
Before installing the machine, the feed water must be filtered to 5 microns.
Free chlorine
Formalin (until after membrane element has run for 24 hours, thereafter, 0.5% formalde- hyde may be Used as a biocide)
Iodine compounds Quaternary germicides Cationic surfactants
Detergents containing
CAUTION: A water softener should not regenerate while the machine is running unless safeguards are used to be sure the machine is operated on softened water during regeneration.
NOTE: To control the RO operation based on water softener regeneration cycle, wire the softener to the Pretreatment Shutdown Control circuit, as described in Field Installed Accessories.
3.2Initial Start-Up
NOTE: If your machine has the membrane elements installed in the housing, pro- ceed to Steps below. If your machine is provided with the membrane ele- ments in shipping boxes, you must load the membrane elements in the housings prior to starting the machine. For membrane element loading instructions, go to Section 4.5 (Membrane Element Installation). Once membrane element installation is complete, return to Step 1 (below) to continue the
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