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written permission of Ebbco Inc. or its subsidiaries.
Section 4:
System Maintenance
4.11 Settling Weir Maintenance
The settling weir bag should be serviced when solids have built up to approximately two to three
inches below the inlet and outlet 90° PVC pipes.
Settling Weir Bag change out procedure:
1) Disconnect plumbing to and from the settling weir.
2) Remove both 90° PVC inlet and outlet pipes.
3) Remove the metal bar running across the top of the settling weir frame by removing the set-screw on
each side of the weir.
4) Remove the drain plug to discharge all of the water inside of the weir to drain out. It is recommended
this is done by a drain or into a catch tank/bucket.
5) Using a forklift, guide all four straps onto the forklift forks. Once secured, lift the settling weir bag out.
6) Install the replacement settling weir bag. Replace both 90° PVC inlet and outlet pipes. The inlet 90°
PVC pipe should be facing downwards, and the outlet 90° PVC pipe should be facing upwards.
Note: When installing a new settling weir bag, the side that has the black inlet lettering printed on
it should be installed on the inlet side of the weir. Installing the bag backwards will affect
performance.
7) Reinstall metal bar across top of the weir frame followed by tightening the set-screws.
8) Reconnect the pluming to the inlet and outlet of the weir.
4.12 Chiller Maintenance
We supply our chiller units with air filters. It is imperative for the customer to establish a
preventative maintenance program in order to keep the air filters clean.
o
As a minimum, air filters should be visually
checked once per week. Filter screens should
also be removed from the chiller and cleaned
at least once every three months.
o
Effective rinsing of the filter screen can be
accomplished with a normal garden hose
connected to city water supply.
o
The filter screen should be placed on a clean
flat surface and sprayed from a distance of
60”.
o
Check the filter screen thoroughly for any
damage and replace if there any visible signs
of ripped or torn media or broken frames.
Figure 4.4
Chiller Air Filter