Spectra Watermakers Catalina 340 Z, Installation And Operating Manual

Page: 53 / 90

53
Winterizing with Propylene Glycol
See description of propylene glycol formulations, and flushing from system, on page 52-53.
1. Close the intake seacock.
2. Push Auto Store to fresh water flush the system. Repeat, to flush the system twice.
3. Remove the fresh water flush hose from the fresh water flush module or Z-Ion at the Quick
Connect fitting, connect the intake service hose, and lead it into a bucket. Connect the brine
service hose, and run it into a second container.
4. Pour 1 gallon (4 liters) of propylene glycol of appropriate concentration (see pages 52-53) into
the bucket with the intake service hose.
5. Make sure the pressure relief valve on the Clark Pump is OPEN 1/2 turn (un-pressurized).
6. Run the feed pump using the SERVICE setting on the manual toggle switch until about a gallon
of water has flowed from the brine discharge service hose, or antifreeze appears. Propylene
glycol will look slightly different, and feel more slippery, than water. Return the switch to RUN
AUTO to stop the pump. Add more propylene glycol to the intake bucket if necessary.
7. Lead the brine discharge service hose into the same bucket as the intake service hose. The ser-
vice hose will now draw propylene glycol solution from the bucket, and the brine discharge
service hose will return it. Run the feed pump on the SERVICE setting and circulate the propyl-
ene glycol solution for 10 minutes.
8. Stop the feed pump by returning the switch to RUN AUTO. Remove the service hoses. Discon-
nect the product tubing from the membrane housing and blow residual water out of the tub-
ing. Empty the charcoal filter housing and flush water lines.
Your watermaker is now protected from biological growth and freezing for one year.
Toggle switch set to SERVICE
Connecting brine discharge service
hose
Connecting intake service hose
Open the Pressure Relief Valve