System Sizing; Location - Davey microlene MCS Installation And Operating Instructions Manual

System Sizing

All Microlene UV systems are rated for a specific flow rate in water that meets the
quality param-eters on page 5. PLEASE NOTE increasing the flow above the system
rating or disinfecting water that does not meet the quality parameters will decrease
the dose and therefore compromise the microorganism inactivation. To determine the
flow rate, follow these simple steps:
1. Be sure no water is being used in the home.
2. Open a faucet or tap nearest the pressure system and run until the well pump
starts.
3. Close the faucet and using a second hand watch, record the length of time in sec-
onds until the pump stops. This is known as the cycle time.
4. Then using a container of known volume, preferably in liters, open the faucet or tap
nearest the pressure system and measure the amount of water drawn off until the
pump starts again. Depending on the size of the container used, it is acceptable to
turn the faucet on and off to empty the container. This measurement is known as
the draw down.
To calculate the pressure system flow rate divide the draw down by the cycle time
and multiply that by 60.
Draw Down_________÷ Cycle Time_________ x 60=_________Pumping Rate in litres

Location

Choose a location where the main cold water line is accessible. The system must
be installed after other water treatment equipment (i.e. softener), but before any
branches (See Figure 1).
Figure 1. Typical Installation
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