EcoWater CHC Series Service And Troubleshooting Manual page 12

Differential Pressure Switch- The differential pressure switch is a switch that compares two
pressure sources and closes an electrical switch upon the differential pressure reaching the specified
set point.
Dip Slide Testing- The Dip Slide test can be used to verify the concentration of bacteria within the
system. This test requires a Dip Slide to be placed into the system water and then placed aside for a
period of 48 hours for results to be taken. Results of the test should be recorded on the copy of the
Customer Service Report that is sent to EcoWater CHC at the end of the week. Please refer to the
paper "Dip Slide Testing" for instructions on how to conduct this type of test.
Electrical Supply- The electrical supply is the power that will be supplied for the use by the CHC
skids. Normally a CHC system utilizes a 480 Volt, three phase supply. This is the main supply
and is normally the type of electrical supply used directly by the pump's motor. Three phase
voltage works very well for industrial type applications because it lends itself very well for pump
use. The electrical supply may also be stepped down inside of the motor starter for use as a control
voltage.
Evaporative Condensers- Similar to cooling towers, except the condenser is also the heat
exchanger. Condensers are normally used in industries where refrigeration is required. The
condenser passes its water directly over the hot refrigeration lines that pass through it. It too,
suffers from the same type of problems as found in cooling towers. It is made up of a basin, heat
exchanging tubes, pump and nozzles and a fan to move the air. The condensers can be used wet
(with water) or dry (no water, normally only used in the winter time dry).
Flow Meter- CHC has utilized a flow meter to aid in the flow setting through the corrosion rack.
The normal flow that we try to achieve is 5 to 8 GPM. The flow meters are made by Blue and
White. You must test the flow meter with different flows to verify that the bobbin moves freely
over the entire range. When ordering a flow meter it is important to record the total flow as well as
the inlet and outlet sizes.
Filtration Systems- Since the CHC treatment system creates crystalline debris by design, it is the
Filtration systems job to remove this debris from the system. All CHC systems require some type
of filtration. CHC systems have incorporated ZGF, centrifugal separators, bag filters, cartridge
filters, Turbo Disk, Amiad, and Forsta filtration systems. Each of these systems are designed to
remove water borne debris. Some of them remove only larger particles while others cost more and
remove a wider variety of particulate. Some require frequent user intervention to clean the media
while others are fully automated and clean themselves. It all depends upon how much the customer
is willing to pay, how much interaction with the system they are willing to do, and what type of
water their system uses for makeup water.
Filtomat- (see Amiad)
FLA- Full Load Amperage of a motor, this is the rated amperage draw for a motor that is working
at 100% load. If the pump motor is flowing more water that it is rated for (pressure too low) than
the amperage will be above the FLA rating and if the pump has a blockage in the inlet or outlet so
that it is flowing little or no water the amperage rating will be far below the FLA rating as found on
the rating plate of the motor.
12