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Maintenance
The Seawater Strainer
• The sea water strainer’s stainless steel element should be inspected, removed, and cleaned
as needed. A clogged strainer will cause the MPC control to alarm “Service Prefilters” Be
careful to ensure that the thru-hull is closed before disassembly and the seal and element
are in place before reassembly. Put the screen up to a light for inspection. When the system
is put into storage, remove, rinse, and reassemble dry to impede corrosion. Check frequently
during operation.
The Prefilters
• Service the prefilters as soon as possible after the first prefilter alarm sounds. When the sec-
ond alarm sounds the system will shut down to prevent damage. If cleaning and re-using
filter elements, clean when the first segment appears on the filter condition bar graph on the
LCD display.
• To service the filters shut off the thru-hull, open the housings, discard the old filters, Clean
out the housing bowls, reassemble the housings with new 20 and 5 micron filter elements.
The 5 micron filter goes downstream from the 20 micron. Leave dry until next startup.
• Use only Spectra approved filters or you may void your warranty. The filters may be
cleaned several times by soaking them in a bucket. Occasionally, lightly lube the filter hous-
ing O-rings with silicone grease.
The Charcoal Fresh Water Flush Filter
• Replace the charcoal filter element at least every 6 months.
General
Periodically inspect the entire system for leakage and chafe on the tubing and hoses. Repair
any leaks you find as soon as practical. Some crystal formation around the Clark pump blocks is
normal. Wipe down any salt encrusted areas with a damp cloth.