Kobold DON -2/4, Operating Instructions Manual

Page: 31 / 65

DON
DON K36/1222 page 31
9.5.1 Re-assembly of DON-x04...DON-x15
The small flow meters (DON-x04 to -x10) have dimples on both housing parts (1
and 4). These markings must be matched during assembly. Only one oval gear is
equipped with magnets in these small flow meters. The oval gear without magnet
must be mounted on the axis that is closest to the dimple. For all other devices
(DON-x15 and larger) both gears are equipped with magnets and can be mounted
in any position.
Both gears are properly mounted when they are at 90 ° to each other. They have
to be easy to move.
Check for correct seating, wear of bearing shafts and bearings by slowly turning
the gears by hand.
Then insert the O-ring (3) into the groove of the measuring housing (1) and
assemble both parts (1 and 4). For the smaller devices (DON-x04 to DON-x10),
make sure the markers are in line.
The hexagon socket screws (5) are inserted and alternately tightened crosswise
opposite to each other. Afterwards, the screws should be tightened with a torque
according to table chapter 9.5.2 in the same order. By following this procedure, the
flow casings are evenly mounted.
Then, if necessary, mount the pulse output board, the cover with the cable gland
or the attached electronics. Make sure the O-ring (8) is seated correctly.
5
1
2
3
4
6
7
8
9
10
2
Optional
Assembly alignment
dimple