User Manual
6|Page
Energy Saver Mode Operaon
Aer 1-hour of no water ow through the Flowmeter, the UV system will reduce the power to the UV
lamp (dimmed) for energy savings. As soon as water ow is present in the Flowmeter, the UV system will
immediately supply ow power to the UV lamp for proper disinfecon.
To provide proper UV disinfecon for various installaons with varying water temperatures, the Flowmeter
uses a 1-hour mer duraon of No-Water-Flow, this allows for proper disinfecon as soon as water ow is
present.
When the UV System enters Energy Saver Mode with a sensor connected, the UV Intensity reading is
masked unl the System goes to Full Power. This will have an eect on any other modules connected:
Module Output/Input during Energy Saver Mode
Sensor UV Intensity is Masked and Not Displayed on the Screen
4-20 mA 20mA output
Solenoid Solenoid Opens
Remote Alarm Outputs OK
SHERPA Outputs Good Status
Calibraon
Each FLOWMETER is calibrated to achieve accurate and reliable ow readings. Re-calibraon is not needed
annually unlike other mechanical Flowmeters but cleaning is recommended on an annual basis to reduce
scaling to maintain accuracy over the device’s lifeme.
Maintenance and Cleaning
Depending on the water quality, the Flowmeter may require periodic cleaning. At a minimum, the
Flowmeter should be cleaned on an annual basis. The following steps outline a basic cleaning procedure.
Step 1) If a by-pass assembly is installed, shut the inlet valve o to prevent water ow through the
system. Otherwise, turn o main water inlet valve (and/or turn o the water pump).
Step 2) Disconnect power cord of the Flowmeter and UV system from electrical outlet. Disconnect the
Flowmeter from the UV System.
Step 3) Release water pressure by opening a downstream faucet and then close the outlet shut-o valve
(if any). If there is no outlet shut-o valve, expect water to drain from the device as the head
pressure in the system will cause the water to ow back down.
Step 4) Loosen and remove each Union nut on both Flowmeter adapters connected to the Flowmeter. Be
prepared from water to drain out as well.
Step 5) Remove the Flowmeter from the plumbing assembly, do not lose or misplace the rubber washers
from the adapter nut.
Step 6) Place the Flowmeter into an empty container. Fill the container with a commercial scale cleaner
(i.e. CLR® or LIME-A-WAY®) enough to submerse the Flowmeter pipe. Be very careful not to get
any cleaner in or on the Flowmeter case, to avoid damaging the device. Allow the Flowmeter to
sit in the soluon for a few minutes. Please note some Flowmeters do not sit at.