Seakeeper 7HD - Page 10

OPERATION
MANUAL
Product:
Document #:
Rev:
Page:
SEAKEEPER 9 / 7HD
90223
6
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 thermostat before bypassing or flowing through a heat
exchanger that has sea water 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.
FIGURE 7 – COOLING SYSTEM COMPONENTS