Parker Pure Water Series, Installation Operation & Maintenance

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MAINTENANCE
STEPS FOR CHEMICAL CLEANING #1: HIGH pH CLEANER
Step 1: Freshwater Flush the watermaker so it is filled with fresh water, NOT seawater. To flush the Pure
Water , refer to instructions in Section 5.1: TO FLUSH THE PURE WATER UNIT .
Step 2:
Dissolve the appropriate amount of Cleaning Chemical #1 (see Table 5.2) in one gallon of freshwater.
Verify the chemical is completely dissolved (use warm water if necessary).
Step 3:
Verify that the (black) High Pressure Bypass Valve is in the CLEANING (open) position.
Step 4:
Place the (gray) cleaning valve in the CLEANING position.
Step 5:
Remove the prefilter elements from the prefilter tank(s) and replace one with a dedicated cleaning filter
(5 micron). The operational filters can be returned to service when the cleaning is finished. Pour the
chemical solution into the tanks, and reinstall the lids. Top up the filter housings with fresh water if
necessary.
REMINDER : One prefilter housing for PW400-PW600 and two prefilter housings for PW800-PW2000.
Step 6: Start the Low Pressure Boost Pump by pressing the LP PUMP pushbutton located on the Master
Control Center (or on the Remote Control Center). Refer to Figures 3.2 and 3.4.
Step 7:
Start the High Pressure Pump by pressing the HP PUMP pushbutton located on the Master Control
Center panel (or on the Remote Control Center). Refer to Figures 3.2 and 3.4. Verify the Vacuum
Pressure Gauge reads more than zero (0 psi). Temporarily opening the flush valve can assist in building
cleaning loop pressure.
Step 8:
After the chemical solution circulated through the RO for 3 minutes, shutdown the HP PUMP and LP
PUMP, respectively.
a) Remove the lid to the filter tank and manually sample the filter water. Measure the pH level of the
sample using test kit #90-0135.
b) If the pH is LESS than 11, add Cleaning Chemical #1 to raise pH level. Repeat these steps until ph
level is 11.
c) Once a ph level of 11 is achieved, re-secure the prefilter tank lid. Start the LP PUMP and HP
PUMP respectively and allow the cleaning solution to circulate for an additional 30-40 minutes.
Step 9:
Shutdown the HP PUMP and LP PUMP, respectively.
Step 10:
Place the (gray) cleaning valve in NORMAL flow position.
Step 11:
Start the LP PUMP and HP PUMP respectively. Allow both pumps to run for 5 additional minutes to
flush the chemical solution from the RO.
STEPS FOR CHEMICAL CLEANING #2: LOW pH CLEANER
Step 12: Freshwater Flush the watermaker so it is filled with fresh water, NOT seawater. To flush the Pure
Water , refer to instructions in Section 5.1: TO FLUSH THE PURE WATER UNIT .
Step 13:
Repeat steps 2 through 11 with chemical #2. In step 8, add chemical until a pH of 3 or less is achieved.
Step 14:
Remove and replace the prefilter(s) with the operational filters. Store the cleaning prefilter for future use. Start
the watermaker as per section 4.1 and record operational data to determine effectiveness of cleaning cycle.