Seakeeper 9 Operation Manual (90223-9); S/N 9-212-3388 to 9-234-4899
2.8 Cooling
The cooling circuit is a closed loop that supplies a glycol/water (50% distilled water and 50% glycol) mix to:
- The motor drive box to remove heat from the drive electronics
- The brake manifold to remove heat from the brake hydraulic circuit
- The enclosure water jackets to remove heat from the flywheel bearings
The heated fluid then passes through a thermostat before bypassing or flowing through a heat exchanger that has seawater on the cold side. The circuit also contains a coolant reservoir for coolant expansion and to make filling easy. The reservoir contains a 7 psi (0.5 bar) pressure cap. The heat exchanger contains zinc anodes that must be inspected and changed regularly to ensure maximum heat exchanger life.
