Cycle Stop CSV1A Installation Instructions

Cycle Stop CSV1A Installation Instructions
_Model_ CSV1A
Pump Control Valve
Installation Instructions
NOTE: Submersible motor manufacturers recommend using a flow inducer sleeve to be sure the motor is sufficiently cooled at low flows. Pressure differential across the valve cannot be more than 125 PSI.
Please read all instructions before installation.
1) Be sure that well has been pumped clean before any valve installations. It is also important that all lines
including the pump be flushed clean of debris. Never install multiple pumps behind one CSV.Turn off power to pump
and drain system.
2) The valve must be installed on the pump side of the pressure tank/pressure switch with all water outlets
downstream of the valve. Flow direction is indicated by the arrow º on the valve itself. (Note: There cannot be
any water outlets between the pump and the valve itself. If outlet lines exist between the well and the tank, the
valve must be installed at the well head.)
3) The pressure tank should be installed on a tee at a 90E angle to the main discharge line downstream of the of
the CSV1A. Pressure switch and other controls must be installed on the small line as close to the diaphragm type
pressure tank as possible or directly on the tank tee or tank cross. The CSV1A also has three additional female
thread ports: two each 1/2” side ports that can be used for pressure switch or pressure gauge and one each 3/4”
bottom port that can be used for a pressure tank) Do not install pressure switch directly on main line away from
pressure tank. Pre-charge pressure in the tank should be 2-5 psi lower than pressure switch start point.
4) CYCLE STOP VALVE should be tightened using teflon tape on threaded ends. Four to seven wraps of teflon
tape is usually sufficient. All connections should be water tight.
5) Turn stem on CSV1A counterclockwise until it is loosened all the way out. Open a line downstream and turn on
pump. Slowly close lines downstream until demand is approximately 2 to 3 GPM. The CSV1A is adjusted by turning
the top bolt clockwise to increase downstream pressure and counter clockwise to decrease downstream pressure.
Adjust the CSV1A until the pressure steadies at the desired pressure. Close off downstream water usage. The
pressure tank will fill at approximately 1 GPM. When using a small tank (5 gallons or less of drawdown), set your cut
in pressure the same as or up to 10 psi lower than the valve set pressure. When working with a tank with more than 5
gallons of drawdown, adjust your pressure switch to its highest setting. Next, set your pressure switch shut off by
closing off all water outlets and timing the tank filling. Wait a minimum of 2 minutes and adjust your pressure switch
until the pump is turned off.
* Important: Pressure switch shut off point must always be higher than the pressure regulated by the CSV1A.
Actual pressure switch settings vary depending on the size of the tank used and minimum run time needed.
Optional install
CSV1A Troubleshooting
Pump is Cycling off and on
Diaphragm is worn out
This is usually due to differential
pressure being higher than 125 PSI.
Use a second valve to reduce differential pressure to original valve. Replace
diaphragm in original valve.
Pressure switch or valve not set
Cut off pressure must be higher than
valve pressure. Reset pressure switch
or valve.
Waterlogged pressure tank
Replace tank
Bad or torn diaphragm
Replace pilot diaphragm
Valve is not set correctly
Reset valve
Demand is more than pump can provide
at desired pressure
Reduce demand so it is within pump
capabilities to maintain desired
Chattering valve
Too much air pressure in tank
Reduce air pressure in tank to 5-10
PSI below cut in pressure.
Pump rapid cycles at
start up and
then begins to function
Pressure switch is located on the main
line or closer to the main line than the
pressure tank.
Move pressure switch to small line at
the base of the tank on a line no
larger than 1 1/4” in diameter
CSV setting is too close to cut off
Set pressure switch cut off pressure
at least 10 PSI higher than CSV
Air pressure in tank too high
Reduce air pressure in tank to 5-10
PSI below cut in pressure
Multiple check valves in system working against each other
Remove all but the check valve or foot
valve on the pump itself
Low pressure
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