EcoWater CHC Series, Service And Troubleshooting Manual

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8
2.0 TERMINOLOGY
The following words are referenced throughout this manual, it is important that
you have an acceptable understanding of the following words:
Actuator- A motorized system used to control a valve or positioning system. Actuators come in
many different sizes and types. It is important to identify what type of actuator you need, some
may be air operated (ZGF) or electrical. Call EcoWater CHC while you are looking at the actuator
to make sure you get the appropriate replacement parts. An actuator can be powered by Air, AC
voltage or DC voltage and it is important to understand what you have BEFORE you get a
replacement.
Actuated Valve- An actuated valve references any valve that is controlled by a motor. When
replacing an actuated valve it is important to record the type (Grey is VSI, Blue is Jordan, and
Yellow is Apollo, Red can be Rotork or J&J), it is also important to record the valve size and type
and control voltage (120VAC or 24VAC or 24VDC).
Alkalinity (Alk.): Alkalinity is a measurement of the buffering capability of water with the
addition of acid. With the addition a certain amount of acid, pH can lower dramatically for water
with low alkalinity, but pH only decreases slightly when its alkalinity is high. The main
contributors of alkalinity are carbonate ions, bicarbonate ions, hydroxide ions, and dissolved CO
2
present in water. For most of waters, bicarbonate (HCO
3
-
) is the dominant contribution to
alkalinity. Alkalinity affects both corrosion and scaling tendencies.
Amiad (Filtomat)- The automated filtration systems added to some CHC offerings. These
automated systems require appropriate sizing. And utilize a screen to capture the debris from the
filtration water flow. An automated screen cleaning regime is used to clean debris from the screen
and flush it to waste. We utilized the M100 Filtomat filters and you can learn more from
www.amiad.com or from the appropriate Service Manuals.
Approach Temperature- This measurement is available if a chiller is being used. It references
the efficiency of the chiller tubes at removing temperature from the refrigerant and the closed loop
system. The approach temperature references the difference between the cooling water discharge
temperature and the refrigerant temperature. Approach temperatures are only accurate if the
Chiller is at 100% load. It can be used as an indication of scale within the tubes. If the approach
temperature stays high, normally above 10 degrees than scaling could have occurred. Further
analysis of the tubes are required for verification.
Bacterial Colony Counts- When required the water sample is sent to CHC overnight in a
refrigerated container. This container should only used a refrigerated gel (NO ICE) to maintain
temperature. The sample should be marked to ensure appropriate processing by CHC. The sample
is placed into specially prepared dishes, and left to incubate. Once the incubation is complete, the
colonies are counted and a report is prepared for distribution. The normal results of this test are
given as colonies/square cm.
Bag Filters- Bag Filters can be used in line or side stream they remove any debris within the
filtration water flow that is larger than the bag micron size. It is important to know what type of