Installation manual

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English
Zephyr Cooling Only Units - Maintenance
Seawater Strainer
Insure that your pump receives adequate seawater flow by
regularly cleaning the strainer basket. Periodically check the
overboard discharge for a steady stream of water. Check
seawater intake speed scoop for obstructions. Make sure
hoses are not looped, kinked or crushed.
Condenser Coil Cleaning
Coils can become fouled over a period of time due to marine
growth or scale build-up. This both obstructs water flow and
prohibits proper heat transfer. To clean coils, flush with a 5%
muriatic or hydrochloric acid and fresh water solution.
Disconnect system hoses from coil and pump solution
through until clean. Rinse with fresh water and reconnect
hoses. Follow manufacturer’s safety guidelines for all cleaning
solutions.
Return Air Filters
Check the return air filter about once a month and clean as
necessary. To clean the filter, remove it from the unit, rinse
with water, air dry and reinstall.
Winterization
There are several methods of winterization, some of which
work better than others. The four various methods employed
using a 50/50 non-polluting biodegradable anti-freeze/water
solution are:
1. Pumping of anti-freeze solution into the overboard thru-
hull fitting, and discharging through the intake thru-hull
fitting.
2. Use of the seawater pump to pump anti-freeze solution
through the system and discharging through the over-
board thru-hull fitting. Close seacock, remove hose from
strainer discharge, raise hose above pump (so pump
does not lose its prime) and pour in anti-freeze solution.
Pump solution through system. The strainer and hose to
seacock will also need to be drained of water.
3. Use of pressurized air injected at the overboard discharge
fitting and the water being discharged through the
seawater intake fitting.
4. Use of pressurized air to force water from the intake
through the overboard discharge.
Note:
Collect all discharged liquids and recycle or dispose of in a
proper manner.
Any method that causes the anti-freeze solution to flow
downward is the method of choice. By this means, the anti-
freeze solution will displace any water trapped and eliminate
the possibility of freezing in hidden areas.
In addition, since the seawater pump utilizes a magnetically
driven impeller, the impeller should be removed from the wet
end assembly, wiped with an alcohol solution, and stored in a
warm, dry area until commissioning takes place.