Adding Coolant

Cooling system is filled to proper level when shipped, with a mixture of 50% ethylene glycol and 50% distilled water. Clear tube between thermostat housing and reservoir should be filled with green coolant mixture. If level has dropped, check for evidence of leaks at all connections before adding fluid as described below. If coolant is at the correct level, skip to Section: Connecting Seawater to Heat Exchanger.

Mix 50% ethylene glycol with 50% distilled water in a clean container. Refer to Table 1 or glycol manufacturer’s literature for freezing points.

Remove pressure cap on top of reservoir. Pour mixture in until level reaches top of clear tube between thermostatic valve and reservoir as shown in Figure 3. Filling reservoir above this level will not cause any damage but coolant may be expelled from pressure relief port below cap due to normal thermal expansion of coolant.
Connect 24 V to controller.
1. At the Display check for any ALARMS
2. Press the POWER ON/OFF button.
3. The flywheel will start to spin and the glycol pump will start.
4. Recheck glycol level with fluid circulating in coolant circuit. Sight down inside reservoir and check that coolant level is above upper port on reservoir as shown in Figure 3. Replace cap.
5. After several minutes of running, press POWER ON/OFF button to turn power off to the flywheel and glycol pump. The glycol pump will stop, and the flywheel will coast to a stop.
6. Seawater cooling is not required when the Seakeeper is powered off and the flywheel is coasting to a stop.
The cooling system is self-purging. If small amounts of air are in the system, they will most likely be dislodged during the first sea trial. Re-check level after sea trial and add fluid if required.

Precautions

Connecting Seawater to Heat Exchanger