4.4 Adding Coolant

Cooling system is filled to proper level when shipped, with a mixture of 50% ethylene glycol and 50% distilled water. The reservoir and clear tube between heat exchanger and reservoir should be filled with green coolant mixture, as shown in Figure 33. 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.
Note: Some amount of entrained air in the fluid is normal and acceptable. This air will be evident by some cloudiness of the fluid. As long as the fluid remains at the specified fill level during operation, the remaining cloudiness is not an issue.

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 vent cap on top of reservoir. Pour mixture in until level reaches 2/3 reservoir as shown in Figure 33. Filling reservoir above this level will not cause any damage but coolant may be expelled from vent on top of cap due to normal thermal expansion of coolant.
Connect 24 V to controller.
1. At the MFD app / optional 5″ Touch 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 4. Replace cap.
5. After several minutes of running, press POWER ON/OFF button to turn power off to the flywheel.
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 glycol level after sea trial and add fluid if required.

4.3 Connecting Seawater to Heat Exchanger

5.1 Installation Requirements Introduction