Kobold DON-130GA8, Operating Instructions Manual

Page: 30 / 56

DON
page 30
DON 01/1019
9.2 Demounting of the electronics mounted on a DON with Zx
and Ex options
To access the device battery, terminal connections and pulse output board, the
electronic cover with display must first be removed in case of flowmeters with
built-in electronics. To do this, loosen the 4 screws of the display cover and
carefully remove it without pulling out or damaging the connecting cable. During
this procedure, be careful not to lose or damage the O ring. The terminal
connection, device battery and pulse output board are now freely accessible. To
remove the electronics, the screws used to connect the electronics housing to the
oval gearbox housing should be loosened.
9.3 Spare Parts
Please consult your closest KOBOLD-Office
Internet:
www.kobold.com or www.koboldusa.com
9.4 Inspection (refer Exploded View)
Inspection points will be the following:
O-rings – Inspect for physical or chemical damage or deformation.
Rotors – Inspect for physical damage due to unfiltered media or damage due to
chemical attack. Also observe also the magnets, if exposed, for chemical attack.
Measuring Cavity – Inspect for physical damage (scoring) due to improperly
filtered media or long term wear and tear.
Axle Shafts – Inspect for physical damage and ensure that the shafts are not
loose and do not rotate.
9.5 Re-assembly of DON
Before re-assembly, please be sure to thoroughly clean all parts .
Care must be taken when reinstalling the rotors such that the magnets should
face the pulse output board.