Pump Solutions Group Neptune Polymaster Liquid Polymer Blend & Feed System - Manual (Page 13)

8
LONG TERM STORAGE INSTRUCTIONS
If the system will not be operating for an extended period of time, all the polymer should be purged from
the system. Polymer that is left in the pump head for three or more days may start to set up. If the
Polymaster is to be shut down for more than three (3) days, flush carefully per the following procedure.
1.
.
Begin water flush as described in step 5 under maintenance on page 15.
2. Purge all polymer for the chemical feed pump head, suction and discharge lines by filling with mineral
oil. Simply connect the suction line into a source of mineral oil, or fill the calibration column with
mineral oil and allow the unit to run until mineral oil has been drawn completely through the suction
line, pump head, discharge line and polymer injection valve at the Gatlin. Turn off the chemical feed
pump as soon as these lines are filled with mineral oil and continue to run dilution water through the
unit for at least 5-10 minutes before final shut down.
3. Do not flush the chemical feed pump of feed pump suction and discharge lines with water as
water will mix with the polymer and may solidify or gel.