Here on Muskegon Lake, West coast
of Michigan it can get cold. Our boat came from Florida
and was never made to winterize so we've had to be creative. She has 17 water
pumps and a lot of complex water
Open all through-hulls
Open all deck
, sink, shower
Remove bottom hoses from all water tanks
relief valve on water heater & break the bottom water line
Remove all water filter cartridge bowls
Break hoses at the heads.
Remove shower head
Break hoses at the air conditioner and refrigeration
Remove main hose from the Reverse cycle evaporater.
remove hoses from all circulation water pumps.
Remove pump head
screws and open/drain pump heads.
Run the bilge pump
to discharge some 300 gallons of water.
Pull the seawater connections from the engine
& Gen set heat exchangers.
Remove the engine raw water
Use the wet/dry vac to suck/blow ever line both ways from each end.
Remove the top from the main and aux sea water strainers. Vac the bowl and all attached lines.
Drain the water from your mufler/exhaust mixing canister(s) if you have them.
Pay $pecial attention to the coil$ on refrigeration
$ystem$. My coils are vertical so they do not drain naturally. I use a funnel and hose to force glycol through them.
Add Propylene Glycol to the raw water
strainers. (close the sea cock) It will drain naturally through the system and start drooling out at low points. I progressively shut off valves and eventually force the stuff into everything. I pour a lot of glycol into the reverse cycle evaporator as it is a low point trap.
My frige/freezers both have condensate drains to the shower sump
. Don't forget to vac these out and pour in glycol.
Shower sumps need to be emptied & cleaned. I pump a bit of bleach followed by water followd by glycol. Pump glycol out to fill the pump and strainer.
Last is to empty the bilge
sump. I follow that with a gallon of glycol and pump it out to fill the bilge
lines. I leave a couple of gallons of glycol in the sump and tie the pump out of the sump.
Can't wait to retire and move this thing SOUTH!