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Maintenance
The Seawater Strainer
The sea water strainer’s stainless steel element should be inspected, removed, and cleaned as
needed. Be careful to ensure that the thru-hull is closed before disassembly and the gasket is
in place before reassembly. When the system is put into storage, remove, rinse, and reassem-
ble dry to impede corrosion. Check frequently during operation.
The Prefilters
• Service the pre-filters on a regular basis. The MPC will alarm when the filters reach a 5
PSI (.35 BAR) pressure drop. You may clean and reuse the filters at this level. If you con-
tinue to use the system until it stops at 10 PSI (.75 BAR) then the filters will have to be
discarded.
• To service the filters, shut off the service valve, open the housing, and discard the old fil-
ters. Clean out the housing bowl and reassemble the housings with new 5 and 20 micron
filter elements. Leave dry until next startup.
• Use only Spectra approved filters or you may void your warranty. The filters may be
cleaned several times with a soft brush and water in a bucket. Occasionally, lightly lube
the filter housing O-ring with silicone grease.
• Replace the charcoal filter element at least every 6 months! This filter protects the
membrane by removing chlorine from the fresh flush water. Use only a Spectra replace-
ment!
Oil Water Separator (Optional)
To install oil water separator capability remove the 20 micron filter from the dual filter hous-
ing and replace with the oil water separator element.
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.
The Charcoal Fresh Water Flush Filter
The Feed Pump and Clark Pump
The feed pump and the Clark Pump require no routine maintenance except inspection for
leaks. Tighten any hose clamps or fittings the show signs of leakage. The high pressure
stainless steel fittings threaded into the Clark Pump have o-ring seals with a straight thread.
These should never leak and should never be over tightened. If one of the tube nuts starts to
leak it can be un-threaded, sealed with a bit of silicone grease or silicone seal, and, using two
wrenches, tightened very tight.