Servicing/Repair; Safety Precautions; Dirt Filter; Maintenance, Spare Parts - aqua metro CONTOIL VZO Instructions De Montage Et Mode D'emploi

Servicing / repairs

Safety precautions

Before working on the hydraulics:
• put the plant or section out of operation
• close the stop valves
• release the pressure

Dirt filter

Dirt filters must be cleaned periodically, initially at short intervals.

Maintenance, spare parts

Check connections periodically for tightness and if necessary tighten again. For control and cleaning, the measuring chamber and the ring
piston of the meters DN15 ... 50 can be removed without dismantling the meter from the pipe.
The cleaning and revision cycle depends largely on the conditions of operation. Under favourable conditions 5 ... 10 years suffice. Check
the units for corrosion. When ancillary equipment is used, observe their mounting and operation instructions.
Spare part lists may be requested from Aquametro.
Dimensional drawings

Flow sensors

DN15, 20, 25: with threaded ends
DN15, 20, 25: with flanges (DIN 2501/SN 21843)
L
B
To restart the plant:
• slowly open the stop valves, avoiding pressure surges ('water hammer')
• vent the pipe well
• check tightness
Torque of measuring chamber screws
Flow meter Screws
DN 15,20 M 6
DN 25 M 8
DN 40 M 12
DN40: with threaded ends
DN40, 50: with flanges (DIN 2501/SN 21843)
B
Torque
6 Nm
16 Nm
47 Nm
L
23