EcoWater CHC Series Service And Troubleshooting Manual page 56

Centrifugal Separators- Refer to the appropriate service manual but here are a few thing to look
for.
a. There are no moving parts to a Centrifugal Separator, if during operation you hear
strange noises from the separator, then the baffle plate has failed and the separator
must be replaced.
b. The separator requires at least 3 psi differential pressure from its inlet to its outlet,
refer to filter problems for more information.
c. All separators remove solids from the water stream. Thereby requiring some way to
remove the solids from the filter. Most systems utilize a timed actuated purge valve,
this valve is controlled by a timer normally set at 18 seconds ON and 6 hours OFF.
Refer to "Adjusting the Purge Valve Timer" for more information on about adjusting
and reading the timer settings.
d. If a separator is clogging frequently decrease the OFF time and increase the ON
time. One example may be moving the ON time from 18 seconds to 24 seconds and
the OFF time from 6 hours to 4 hours. Trial the new settings for a month to see if
the clogging has ceased. Make further adjustments as needed.
e. Other Separators utilize a continuous drain flow through a bag filter back to pump
suction. Make sure that the flow restriction valve after the bag filter housing is
adjusted so that only a loss of 3 psi is seen on the discharge pressure of the separator
as this valve is opened. You will also need to verify that the customer is cleaning
the bag in a timely manner. Some of the systems in the field using this technique
also have a flow meter built in line with the flow restriction valve. You can use this
meter as a gauge as to when the bag is plugged and requires replacement. You can
also use this meter to regulate the flow through the bag.
56