Maintenance
Before disassembling make sure all fluid is drained from the meter and connecting pipes. Cleaning
can be carried out using a soft brush. Be careful not to damage the chamber or disk. Use only
original spare parts. A new calibration should be performed after cleaning or disassembly.
Flow Meter Disassembly
1)
Remove the reset knob by pulling firmly to the side.
2)
Loosen the 4 retaining screws see Diagram 1, pos 22.
3)
Loosen the 2 screws at pos 5.
4)
Reassembly is the reverse.
Measuring Chamber
1)
Disassemble the unit as per the above instructions.
2)
Loosen the 8 screws at pos 7.
3)
Remove the body cover, pos 28, together with the gear unit. Be careful not to damage the
gasket, pos 16.
4)
Remove the whole measuring chamber, pos 27, by lifting it from the meter body and at the
same time pulling it back towards the inlet in order to remove the O ring, pos 17, from its seal at
the outlet.
5)
To check the inside of the measuring chamber, pos 27, remove the O ring, pos 17, and
divide the two half chambers containing the nutating disks.
6)
To reassemble the chamber reverse the procedure. Be careful to verify the disk rotates
freely in the chamber. Install the gaskets properly and make sure to lubricate them. Make sure the
while fixing the cover on the body the nutating disk needle does not hit the gear, pos 14, which
must remain free to be pulled by the disk needle. Tighten screws at pos 7.
Gear Unit
To reach the gear unit.
1)
Remove cover, pos 28.
2)
Loosen screws, pos 13
3)
Remove plate, pos 12. Now all gears can be reached for inspection.
4)
Should the gasket, pos 10, need to be replaced, remove the bevel gear, pos 8, from the
shaft by pulling axially, then remove the gear, pos 11, together with the shaft.
5)
Reassembly is the reverse procedure.
Summary of Contents for SPEP12V75
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