Filling And Purging The System; With Power Purge - Dometic SeasStar Power Assist Installation And User Manual

EN
4 Filling and Purging
the System
NOTICE!
Do not turn on the power assist until you have filled the steering system
and purged it with the P/A off. Running the power assist pump dry may
cause irreparable damage.
NOTE
If the system is plumbed with a liquid alignment valve as shown in Config B
(figure 3-5) and Config D (figure 3-6), refer to the instructions that came
with the valve for additional bleeding instructions.

4.1 With Power Purge

NOTE
Refer to the Power Purge operating manual for additional instructions
and for purge procedures for multiple-station installations.
STEP 1 — Remove air from compensating line
Install the helm adapter fitting into the helm's fill port and attach the Power
Purge supply line. Ensure the quick connect is locked onto the fitting.
Connect one of the Power Purge's fluid return lines to the bleed fitting
on the power assist reservoir (see figure 4-2).
Open the bleed fitting one to two turns.
Turn on the Power Purge and run it until no air bubbles can be seen
leaving the bleed fitting.
Turn off the Power Purge and close the bleed fitting.
STEP 2 — Purge the cylinder lines
Connect the fluid return lines to the steering cylinder bleed fittings.
Open the cylinder bleed fittings one and a half turns. Ensure the quick
connect remains locked onto the fitting.
Turn the Power Purge on and wait 20 seconds for the lines to fill with fluid.
With the power assist off, slowly turn the steering wheel clockwise until
the cylinder rod is fully extended. You may need to manually push the
cylinder rod or engine.
Continue turning slowly for thirty seconds, then check that there are no
bubbles escaping in the purge lines.
Repeat in the counterclockwise direction.
Turn the power assist on and repeat the purge in both directions.
Turn the Power Purge off.
Tighten the cylinder bleed fittings.
NOTE
If there is an autopilot pump in your system you will need to purge it by
running it for at least ten seconds in both directions. See the manufacturer's
instructions for additional information.
STEP 3 — Check the purge
Perform the system checks in section 4.3.
4-1