Hose Connections; Installation Example - Vetus MGP9090 Instructions D'installation

Hose connections

In to order to best connect the hose to the waterlock, the top
portion of the waterlock can be turned in a 360° radius.
The top portion should be turned as follows:
1 Loosen the clamping ring (A) by unscrewing the 8 M6 bolts
2 Pull the top portion of the waterlock upwards
3 Turn the top portion to the desired position
4 Let the top portion down again
5 Re-attach the clamping ring (A) by screwing the 8 M6 bolts
back in using a 2 Nm tightening torque.
Please note!
Ensure that the O-ring is properly centred!
Screw on the M6 bolts at the same time.
Make sure the top part is not out of position!
Waterlock MGP
Fitting the hose
To ease the fitting of the hose to the hose connector, use only
water and/or soap, NOT grease or products containing oil.
Fit each hose connection with 2 stainless steel 12 mm (0.5")
wide hose clamps.
Sensor for temperature alarm
A sensor for a temperature alarm can be fitted in the exhaust
pipe.
A sensor for a temperature alarm can also be fitted in the
exhaust silencer connector. The 'IN' connector on the exhaust
silencer has two circular areas. These are intended for fitting the
temperature sensor. Drill in one of these areas a hole of the cor-
rect size. Fit the sensor with a lock nut and, after fitting, check
that the exhaust silencer is completely liquid and gas-tight.

Installation example

On p. 15, you will find a depiction of an exhaust system with a
waterlock of type MGP and a transom exhaust connection.
When the engine is stopped, any water which is still in the
exhaust pipe (between the highest point in the exhaust system
and the waterlock) will run back to the waterlock.
Prevention of syphoning (drawing 2)
If the water injection point 'C' is below, or less than 15 cm (0.6")
above the waterline (also when the ship heels under sail), there
is a risk that when the engine is stopped, the coolant water
will enter the engine due to syphoning. This syphoning can be
prevented in two ways:
 By creating an air vent system in the coolant water hose
between engine block and water injection point 'C', by fitting
an air vent with air vent pipe, for example.
 By fitting an air vent (with valve) in the coolant water hose
between the engine block and water injection point 'C'.
Maintenance
Check all hose connections for gas and water leaks regularly.
Before the winter lay-up, drain the waterlock. The waterlock has
a drain plug for this purpose.
ENGLISH
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030421.03