OPERATION
MANUAL
Product: Document #: Rev: Page:
SEAKEEPER 3 90379 1 8 of 8
Section 1: SYSTEM OVERVIEW
1.7 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 heat exchanger that has seawater on the cold side. The
seawater pump output will operate for two minutes after the Seakeeper is turned on. During
operation, the seawater pump output is turned on and off based on the temperature of the
Seakeeper. 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.
FIGURE 7 – COOLING SYSTEM COMPONENTS
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