INSTALLATION
MANUAL
Product:
Document #:
Rev:
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SEAKEEPER 9 / 7HD
90222
6
3 of 5
Section 3: COOLING INSTALLATION
3.1 Precautions
Installer is responsible for supplying a dedicated sea water pump and associated
plumbing. Sea water connections on the Seakeeper heat exchanger mate with ¾ inch
(19 mm) hose.
An output is available from motor drive to power and automatically control seawater
pump. This pump must operate on 230 VAC single phase and consume less than 5
amps. Pumps requiring other voltages or higher current can still be controlled by using
this supply from motor drive to trigger an installer-supplied contactor but a separate
source of power must be provided.
A self-priming sea water pump (customer/installer supplied) may be required due to
installation location to maintain water flow in all underway conditions where cavitation
near the intake may occur and potentially cause an air-lock condition restricting sea
water flow to the heat exchanger.
Maximum sea water pressure in heat exchanger is 20 psi (1.4 bar)
Seawater flow requirement through heat exchanger is 4 GPM (15.1 LPM) minimum
and 8 GPM (30.3 LPM) maximum under all operating conditions of the boat.
When
sizing sea water pump, installer should factor in losses for raw water plumbing. In
addition to initial operation at dock, new Seakeeper installations should be checked to be
within the flow requirements while vessel is at speed. Flows higher than 8 GPM (30.3
LPM) could affect heat exchanger life.
3.2 Adding Coolant
1)
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 sea water
connection in section 3.3.
FIGURE 3
– SEAKEEPER 9 COOLANT LEVEL
Correct Coolant Level
