46
5.4 Engine Water Cooling System
1.
The thermostat or any flow restrictions should
be removed from the engine. The thermostat on
the cooling tower will perform the temperature
control function.
2. Connect the tower supply hoses to the engine
(Figure 5.3). Coolant is supplied to the engine
from the lower connection on the CT700-NOP
cooling tower. Coolant from the engine enters
the CT700-NOP cooling tower at the top
connection (other cooling towers may vary).
3. Close the drain valve and open the inlet valve
to fill the system. Air is purged automatically.
Observe the sight tube to determine the cooling
tower fill level. Close the inlet valve when the
tower is full. After the engine is started it may
be required to open the inlet valve and let in
more water to compensate for air purging out
of the engine. Both valves must be closed for
normal operation.
• SuperFlow CT300P, CT700P, and
CT1001 pressurized cooling towers.
The coolant chamber is filled through the
radiator type cap at the top of the tower.
Once the engine is started and the air
purged, replace the cap to pressurize the
system.
4. Once the engine and cooling tower are full,
the engine can be started and warmed up.
Adjustment for temperature control can be
made on the control valve located at the bottom
of the tower.
5. When the test is completed and before
disconnecting the hoses, open the outlet valve
to drain the water from the tower and the engine.
Figure 5.4 CT700-NOP Unpressurized
Cooling Tower
DRAIN LINE
FROM ENGINE
(HOT)
WATER
OUT
WATER
IN
OPEN
TO FILL
OPEN
TO DRAIN
TO ENGINE
(COOL)
DRAIN LINE
TEMPERATURE
VALVE
TEMPERATURE
GAUGE
5.0 Operation
