29
6.3
Maintenance
NOTICE
Warranty will be void, if the flow meter is being opened during the warranty
period by a non Aquametro Oil & Marine certified person.
Check connections periodically for tightness and if necessary retighten. For control and cleaning,
the measuring chamber and the ring piston of the flow meters CONTOIL
®
DN 15 - 50 can be
removed without dismantling the flow meter from the pipe.
(1)
(2)
Torque values of screws
Flow meter
Screws
Torque
Electronic unit (1)
M 4
2 Nm
Coupling (2)
M 6
4.5 Nm
Torque of measuring chamber screws
Flow meter
Screws
Torque
DN 15, 20
M 6
6 Nm
DN 25
M 8
16 Nm
DN 40
M 12
47 Nm
DN 50
M 16
100 Nm
The cleaning and revision cycle depends largely on the conditions of operation. Under favourable
conditions 5 - 10 years suffice. Check the devices for corrosion.
Recommended revision cycle
Flow meter
Totalizer volume
Time
DN 15
20'000 m
3
7 years
DN 20
50’000 m
3
7 years
DN 25
100’000 m
3
7 years
DN 40
300’000 m
3
7 years
DN 50
1'000’000 m
3
7 years
The responsibility of the revision cycles lies with the operator.
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