Xylem MPP 350 User Manual

Page 10

Commissioning

MPP 350

ba75434e02

07/2005

3.2.3

Mounting the D. O. module

Make sure that the D.O. module and conductivity measuring cell are screwed
together tightly. When mounted, the cap nut of the D.O. module has to be
screwed on up to the stop.

Before screwing on the D.O. module, check the following points:

! The sealing (3) must be clean and evenly positioned in the groove.
! The plug connection must be clean and dry on both sides.

Screwing on the

D.O. module

Position the D.O. module (1) on the conductivity measuring cell and carefully
and with slight pressure turn it until the guiding nib on the D.O. module locks
in place in the corresponding groove on the conductivity measuring cell.
Subsequently tighten the cap nut (2) up to the stop. The thread only snatches
if the D.O. module was correctly positioned.

Unscrewing and
storing the D. O.

module

Unscrew the cap nut and remove the D.O. module from the conductivity basic
module.

For storing, mount the clean and dry closing cap (4) on the D. O. module.
Thus the plug connection will remain optimally protected.

Caution

Inappropriate handling can lead to the release of elec-
trolyte solution. When unscrewing the D.O. module
only turn the cap nut (not the membrane cap!).