Spectra Watermakers CATALINA 300 MPC-5000, Installation & Owner'S Manual

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MPC-5 PURGE MODE BYPASS
Whenever the control power (12 or 24 volt DC) has been shut off the system will prompt
you through the purge mode when it is turned back on. This is because the only time the
MPC-5000 should be turned off is after the system has been pickled. Purge Mode prompts
the operator to open the pressure relief and then runs seawater through the system for 20
minutes to clear away the chemicals. Normally, during periods of disuse the MPC-5000 will
remain powered up so that it can do the five day flush cycles, and no storage solution will be
present. If the control power has been interrupted but the system is not filled with storage
solution, Purge Mode can be bypassed by tapping the two left hand buttons at the same time
until the display reads PURGE MODE BYPASSED. The buttons must be pushed at exactly
the same time. You can’t hold one down and then push the other. From Purge Mode By-
passed you can run the system in any mode. 4/20/04
OP-1 WINTERIZING OR PICKLING W/ ANTIFREEZE
WARNING: Use only propylene glycol based drinking water system antifreeze. Do not use
ethylene glycol based automotive antifreeze, which is toxic.
Propylene glycol can be used instead of Spectra SC-1 storage chemical for storage in any
climate up to one year following this procedure.
1. Replace the prefilters with clean ones.
2 Flush the system with fresh water until the brine discharge water is below 1000 ppm or
until the brine discharge does not taste salty.
3. Set up the system for pickling according to the directions for your model.
4. Place enough antifreeze in a bucket to fill your system. This will be about two gallons
for a 150 or 200 model, three gallons for a 380 or 400, and larger systems will take more.
5. Run the system DEPRESSURIZED with the feed pump drawing from the bucket and the
brine discharging overboard until the colored antifreeze solution begins to appear at the
brine discharge then switch the brine discharge into the bucket and recycle the remaining
solution until the glycol and water are completely mixed, (about ten minutes). On some
models you will have to shut down the unit to switch the brine discharge into the bucket.
6. The product water side of the system will not contain antifreeze and should be protected
from freezing by blowing or draining it dry if necessary.
7. Turn off power to the system, leaving the pressure relief valve open ½ turn.
5/25/04