Grundfos BACMON Installation And Operating Instructions Manual page 12

11.1.3 Replacing the flow cell
The flow cell status, that is its transparency, is indicated in the
display and should be checked daily. See section
When the flow cell status bar becomes yellow, replace the flow
cell.
2
3.1
Fig. 21 Removing the old flow cell
1. Open the door of the water analysis cabinet.
– The product will automatically stop and switch to service
mode.
2. Flip up the flow cell lock (2) and hold it there.
3. Pull out the old flow cell (3.1).
4. Clean your hands to avoid contamination of the new flow cell
or the micro fibre cloth with fat, oil or dirt.
2
3.2
Fig. 22 Inserting the new flow cell
5. Take a new flow cell out of the packaging.
– Make sure not to touch the glass. Only touch the marked
area (3.2) of the flow cell.
6. Clean the new flow cell with the micro fibre cloth delivered
with the new flow cells.
– Make sure that the surface is clean.
Hold the flow cell lock (2) in the topmost position until
the new flow cell is inserted completely. Otherwise
the new flow cell can be damaged.
7. Insert the new flow cell completely and flip down the flow cell
lock while holding the flow cell in position.
– Make sure the orientation of the flow cell is as shown in fig.
22.
– Store the micro fibre cloth in a place where it will not be
contaminated with fat, oil or dirt.
8. Close the water analysis cabinet again.
The product will start sample taking automatically.
12
11.1.4 Cleaning or replacing the prefilter screen
The prefilter is installed in product variants B and D. See position
(11) in section
7.2 Display.
1. Press [Service] and confirm to set the product into service
mode.
2. Close the valve in the inlet line.
3. Unscrew the filter screen housing counter-clockwise.
4. Remove the filter screen and the O-ring from the filter screen
housing.
Fig. 23 Cleaning the prefilter
5. Clean all dismantled parts using a nylon brush and clean
water.
– Replace the filter screen, if necessary. Contact Grundfos to
order spare parts.
6. Reassemble the prefilter in reverse order.
– Make sure the O-ring is placed correctly.
7. Flush the flow cell until the prefilter is filled with water. See
section
8. Start the product again by leaving the service mode.
11.1.5 Cleaning the suction filter
The suction filter can be installed in product variant C or as an
accessory, depending on the individual installation. See pos. (17)
in section
1. Press [Service] and confirm to set the product into service
mode.
2. Remove the suction filter from the inlet line by pushing in the
collet of the push-in fitting and pulling out the line.
3. Clean the filter using a nylon brush and clean water.
– Replace the filter, if necessary. Contact Grundfos to order
spare parts.
4. Reinstall the suction filter.
5. Start the product again by leaving the service mode.
6.4 Product variants and components
7.6.2 "Flush flow cell".
6.4 Product variants and components
overview.
overview.